| 1 |
2 |
robfinch |
;-------------------------------------------------------------------------------
|
| 2 |
|
|
;
|
| 3 |
|
|
; system memory map
|
| 4 |
|
|
;
|
| 5 |
|
|
;
|
| 6 |
|
|
; 00000000 +----------------+ <+
|
| 7 |
|
|
; | startup sp,pc | 8 B |
|
| 8 |
|
|
; 00000008 +----------------+ |
|
| 9 |
|
|
; | vectors | pair shared+
|
| 10 |
|
|
; 00000400 +----------------+ |
|
| 11 |
|
|
; | bios mem | |
|
| 12 |
|
|
; 00001000 +----------------+ |
|
| 13 |
|
|
; | bios code | |
|
| 14 |
|
|
; 00008000 +----------------+ <+
|
| 15 |
|
|
; | unused |
|
| 16 |
|
|
; 00040000 +----------------+
|
| 17 |
|
|
; | local ram |
|
| 18 |
|
|
; 00042000 +----------------+
|
| 19 |
|
|
; | unused |
|
| 20 |
|
|
; 00100000 +----------------+
|
| 21 |
|
|
; | global ram |
|
| 22 |
|
|
; 00101000 +----------------+
|
| 23 |
|
|
; | serial rcvbuf |
|
| 24 |
|
|
; 00102000 +----------------+
|
| 25 |
|
|
; | unused |
|
| 26 |
|
|
; 20000000 +----------------+
|
| 27 |
|
|
; | |
|
| 28 |
|
|
; | |
|
| 29 |
|
|
; | |
|
| 30 |
|
|
; : dram memory : 512 MB
|
| 31 |
|
|
; | |
|
| 32 |
|
|
; | |
|
| 33 |
|
|
; | |
|
| 34 |
|
|
; 40000000 +----------------+
|
| 35 |
|
|
; | |
|
| 36 |
|
|
; : unused :
|
| 37 |
|
|
; | |
|
| 38 |
|
|
; FD000000 +----------------+
|
| 39 |
|
|
; | |
|
| 40 |
|
|
; : I/O area : 1.0 M
|
| 41 |
|
|
; | |
|
| 42 |
|
|
; FFE00000 +----------------+
|
| 43 |
|
|
; | |
|
| 44 |
|
|
; : unused :
|
| 45 |
|
|
; | |
|
| 46 |
|
|
; FFFFFFFF +----------------+
|
| 47 |
|
|
;
|
| 48 |
|
|
;-------------------------------------------------------------------------------
|
| 49 |
|
|
;
|
| 50 |
3 |
robfinch |
HAS_MMU equ 0
|
| 51 |
|
|
|
| 52 |
2 |
robfinch |
CTRLC EQU $03
|
| 53 |
|
|
CTRLH EQU $08
|
| 54 |
|
|
CTRLS EQU $13
|
| 55 |
|
|
CTRLX EQU $18
|
| 56 |
|
|
CTRLZ EQU $1A
|
| 57 |
|
|
LF EQU $0A
|
| 58 |
|
|
CR EQU $0D
|
| 59 |
|
|
XON EQU $11
|
| 60 |
|
|
XOFF EQU $13
|
| 61 |
|
|
|
| 62 |
|
|
SC_F12 EQU $07
|
| 63 |
|
|
SC_C EQU $21
|
| 64 |
|
|
SC_T EQU $2C
|
| 65 |
|
|
SC_Z EQU $1A
|
| 66 |
|
|
SC_KEYUP EQU $F0
|
| 67 |
|
|
SC_EXTEND EQU $E0
|
| 68 |
|
|
SC_CTRL EQU $14
|
| 69 |
|
|
SC_RSHIFT EQU $59
|
| 70 |
|
|
SC_NUMLOCK EQU $77
|
| 71 |
|
|
SC_SCROLLLOCK EQU $7E
|
| 72 |
|
|
SC_CAPSLOCK EQU $58
|
| 73 |
|
|
SC_ALT EQU $11
|
| 74 |
|
|
SC_LSHIFT EQU $12
|
| 75 |
|
|
SC_DEL EQU $71 ; extend
|
| 76 |
|
|
SC_LCTRL EQU $58
|
| 77 |
|
|
SC_TAB EQU $0D
|
| 78 |
|
|
|
| 79 |
3 |
robfinch |
if HAS_MMU
|
| 80 |
2 |
robfinch |
TEXTREG EQU $1E3FF00 ; virtual addresses
|
| 81 |
|
|
txtscreen EQU $1E00000
|
| 82 |
|
|
semamem EQU $1E50000
|
| 83 |
|
|
ACIA EQU $1E60000
|
| 84 |
|
|
ACIA_RX EQU 0
|
| 85 |
|
|
ACIA_TX EQU 0
|
| 86 |
|
|
ACIA_STAT EQU 4
|
| 87 |
|
|
ACIA_CMD EQU 8
|
| 88 |
|
|
ACIA_CTRL EQU 12
|
| 89 |
3 |
robfinch |
I2C2 equ $01E69000
|
| 90 |
|
|
I2C_PREL equ 0
|
| 91 |
|
|
I2C_PREH equ 1
|
| 92 |
|
|
I2C_CTRL equ 2
|
| 93 |
|
|
I2C_RXR equ 3
|
| 94 |
|
|
I2C_TXR equ 3
|
| 95 |
|
|
I2C_CMD equ 4
|
| 96 |
|
|
I2C_STAT equ 4
|
| 97 |
2 |
robfinch |
PLIC EQU $1E90000
|
| 98 |
|
|
MMU EQU $FDC00000 ; physical address
|
| 99 |
|
|
leds EQU $1EFFF00 ; virtual addresses
|
| 100 |
|
|
keybd EQU $1EFFE00
|
| 101 |
|
|
KEYBD EQU $1EFFE00
|
| 102 |
|
|
RAND EQU $1EFFD00
|
| 103 |
|
|
RAND_NUM EQU $1EFFD00
|
| 104 |
|
|
RAND_STRM EQU $1EFFD04
|
| 105 |
|
|
RAND_MZ EQU $1EFFD08
|
| 106 |
|
|
RAND_MW EQU $1EFFD0C
|
| 107 |
|
|
RST_REG EQU $1EFFC00
|
| 108 |
|
|
IO_BITMAP EQU $1F00000
|
| 109 |
3 |
robfinch |
else
|
| 110 |
|
|
TEXTREG EQU $FD03FF00 ; virtual addresses
|
| 111 |
|
|
txtscreen EQU $FD000000
|
| 112 |
|
|
semamem EQU $FD050000
|
| 113 |
|
|
ACIA EQU $FD060000
|
| 114 |
|
|
ACIA_RX EQU 0
|
| 115 |
|
|
ACIA_TX EQU 0
|
| 116 |
|
|
ACIA_STAT EQU 4
|
| 117 |
|
|
ACIA_CMD EQU 8
|
| 118 |
|
|
ACIA_CTRL EQU 12
|
| 119 |
|
|
I2C2 equ $FD069000
|
| 120 |
|
|
I2C_PREL equ 0
|
| 121 |
|
|
I2C_PREH equ 1
|
| 122 |
|
|
I2C_CTRL equ 2
|
| 123 |
|
|
I2C_RXR equ 3
|
| 124 |
|
|
I2C_TXR equ 3
|
| 125 |
|
|
I2C_CMD equ 4
|
| 126 |
|
|
I2C_STAT equ 4
|
| 127 |
|
|
PLIC EQU $FD090000
|
| 128 |
|
|
MMU EQU $FDC00000 ; physical address
|
| 129 |
|
|
leds EQU $FD0FFF00 ; virtual addresses
|
| 130 |
|
|
keybd EQU $FD0FFE00
|
| 131 |
|
|
KEYBD EQU $FD0FFE00
|
| 132 |
|
|
RAND EQU $FD0FFD00
|
| 133 |
|
|
RAND_NUM EQU $FD0FFD00
|
| 134 |
|
|
RAND_STRM EQU $FD0FFD04
|
| 135 |
|
|
RAND_MZ EQU $FD0FFD08
|
| 136 |
|
|
RAND_MW EQU $FD0FFD0C
|
| 137 |
|
|
RST_REG EQU $FD0FFC00
|
| 138 |
|
|
IO_BITMAP EQU $FD100000
|
| 139 |
|
|
endif
|
| 140 |
2 |
robfinch |
|
| 141 |
|
|
SERIAL_SEMA EQU 2
|
| 142 |
|
|
KEYBD_SEMA EQU 3
|
| 143 |
|
|
RAND_SEMA EQU 4
|
| 144 |
|
|
SCREEN_SEMA EQU 5
|
| 145 |
|
|
MEMORY_SEMA EQU 6
|
| 146 |
|
|
TCB_SEMA EQU 7
|
| 147 |
|
|
|
| 148 |
|
|
data
|
| 149 |
|
|
dc.l $00040FFC
|
| 150 |
|
|
dc.l start
|
| 151 |
|
|
dc.l bus_err
|
| 152 |
|
|
dc.l 0
|
| 153 |
|
|
dc.l illegal_trap * ILLEGAL instruction
|
| 154 |
|
|
dc.l 0
|
| 155 |
|
|
dc.l EXCEPTION_6 * CHK
|
| 156 |
|
|
dc.l EXCEPTION_7 * TRAPV
|
| 157 |
|
|
dc.l 0
|
| 158 |
|
|
dc.l 0
|
| 159 |
|
|
|
| 160 |
|
|
; 10
|
| 161 |
|
|
dc.l 0
|
| 162 |
|
|
dc.l 0
|
| 163 |
|
|
dc.l 0
|
| 164 |
|
|
dc.l 0
|
| 165 |
|
|
dc.l 0
|
| 166 |
|
|
dc.l 0
|
| 167 |
|
|
dc.l 0
|
| 168 |
|
|
dc.l 0
|
| 169 |
|
|
dc.l 0
|
| 170 |
|
|
dc.l 0
|
| 171 |
|
|
|
| 172 |
|
|
; 20
|
| 173 |
|
|
dc.l 0
|
| 174 |
|
|
dc.l 0
|
| 175 |
|
|
dc.l 0
|
| 176 |
|
|
dc.l 0
|
| 177 |
|
|
dc.l SpuriousIRQ
|
| 178 |
|
|
dc.l 0
|
| 179 |
|
|
dc.l 0
|
| 180 |
|
|
dc.l irq3_rout
|
| 181 |
|
|
dc.l 0
|
| 182 |
|
|
dc.l 0
|
| 183 |
|
|
|
| 184 |
|
|
; 30
|
| 185 |
|
|
dc.l TickIRQ ; IRQ 30 - timer / keyboard
|
| 186 |
|
|
dc.l nmi_rout
|
| 187 |
|
|
dc.l 0
|
| 188 |
|
|
dc.l 0
|
| 189 |
|
|
dc.l 0
|
| 190 |
|
|
dc.l trap3 ; breakpoint
|
| 191 |
|
|
dc.l 0
|
| 192 |
|
|
dc.l 0
|
| 193 |
|
|
dc.l 0
|
| 194 |
|
|
dc.l 0
|
| 195 |
|
|
|
| 196 |
|
|
; 40
|
| 197 |
|
|
dc.l 0
|
| 198 |
|
|
dc.l 0
|
| 199 |
|
|
dc.l 0
|
| 200 |
|
|
dc.l 0
|
| 201 |
|
|
dc.l 0
|
| 202 |
|
|
dc.l 0
|
| 203 |
|
|
dc.l 0
|
| 204 |
|
|
dc.l TRAP15
|
| 205 |
|
|
dc.l 0
|
| 206 |
|
|
dc.l 0
|
| 207 |
|
|
|
| 208 |
|
|
; 50
|
| 209 |
|
|
dc.l 0
|
| 210 |
|
|
dc.l 0
|
| 211 |
|
|
dc.l 0
|
| 212 |
|
|
dc.l 0
|
| 213 |
|
|
dc.l 0
|
| 214 |
|
|
dc.l 0
|
| 215 |
|
|
dc.l 0
|
| 216 |
|
|
dc.l 0
|
| 217 |
|
|
dc.l 0
|
| 218 |
|
|
dc.l io_irq
|
| 219 |
|
|
|
| 220 |
|
|
; 60
|
| 221 |
|
|
dc.l KeybdIRQ
|
| 222 |
|
|
dc.l SerialIRQ
|
| 223 |
|
|
dc.l 0
|
| 224 |
|
|
dc.l brdisp_trap
|
| 225 |
|
|
dc.l 0
|
| 226 |
|
|
dc.l 0
|
| 227 |
|
|
dc.l 0
|
| 228 |
|
|
dc.l 0
|
| 229 |
|
|
dc.l 0
|
| 230 |
|
|
dc.l 0
|
| 231 |
|
|
|
| 232 |
|
|
org $400
|
| 233 |
|
|
|
| 234 |
|
|
InstalledIRQ:
|
| 235 |
|
|
dc.l 0
|
| 236 |
|
|
dc.l 0
|
| 237 |
|
|
dc.l 0
|
| 238 |
|
|
dc.l 0
|
| 239 |
|
|
dc.l 0
|
| 240 |
|
|
dc.l 0
|
| 241 |
|
|
dc.l 0
|
| 242 |
|
|
dc.l 0
|
| 243 |
|
|
|
| 244 |
|
|
dc.l 0
|
| 245 |
|
|
dc.l 0
|
| 246 |
|
|
dc.l 0
|
| 247 |
|
|
dc.l 0
|
| 248 |
|
|
dc.l 0
|
| 249 |
|
|
dc.l 0
|
| 250 |
|
|
dc.l 0
|
| 251 |
|
|
dc.l 0
|
| 252 |
|
|
|
| 253 |
|
|
dc.l 0
|
| 254 |
|
|
dc.l 0
|
| 255 |
|
|
dc.l 0
|
| 256 |
|
|
dc.l 0
|
| 257 |
|
|
dc.l 0
|
| 258 |
|
|
dc.l 0
|
| 259 |
|
|
dc.l 0
|
| 260 |
|
|
dc.l 0
|
| 261 |
|
|
|
| 262 |
|
|
dc.l 0
|
| 263 |
|
|
dc.l 0
|
| 264 |
|
|
dc.l 0
|
| 265 |
|
|
dc.l 0
|
| 266 |
|
|
dc.l 0
|
| 267 |
|
|
dc.l 0
|
| 268 |
|
|
dc.l 0
|
| 269 |
|
|
dc.l 0
|
| 270 |
|
|
|
| 271 |
|
|
dc.l 0
|
| 272 |
|
|
dc.l 0
|
| 273 |
|
|
dc.l 0
|
| 274 |
|
|
dc.l 0
|
| 275 |
|
|
dc.l 0
|
| 276 |
|
|
dc.l 0
|
| 277 |
|
|
dc.l 0
|
| 278 |
|
|
dc.l 0
|
| 279 |
|
|
|
| 280 |
|
|
dc.l 0
|
| 281 |
|
|
dc.l 0
|
| 282 |
|
|
dc.l 0
|
| 283 |
|
|
dc.l 0
|
| 284 |
|
|
dc.l 0
|
| 285 |
|
|
dc.l 0
|
| 286 |
|
|
dc.l 0
|
| 287 |
|
|
dc.l 0
|
| 288 |
|
|
|
| 289 |
|
|
dc.l 0
|
| 290 |
|
|
dc.l 0
|
| 291 |
|
|
dc.l 0
|
| 292 |
|
|
dc.l 0
|
| 293 |
|
|
dc.l 0
|
| 294 |
|
|
dc.l 0
|
| 295 |
|
|
dc.l 0
|
| 296 |
|
|
dc.l 0
|
| 297 |
|
|
|
| 298 |
|
|
dc.l 0
|
| 299 |
|
|
dc.l 0
|
| 300 |
|
|
dc.l 0
|
| 301 |
|
|
dc.l 0
|
| 302 |
|
|
dc.l 0
|
| 303 |
|
|
dc.l 0
|
| 304 |
|
|
dc.l 0
|
| 305 |
|
|
dc.l 0
|
| 306 |
|
|
|
| 307 |
|
|
org $500
|
| 308 |
|
|
|
| 309 |
|
|
;-------------------------------------------------------------------------------
|
| 310 |
|
|
;-------------------------------------------------------------------------------
|
| 311 |
|
|
|
| 312 |
|
|
; BIOS variables which must be local (not shared) to each core
|
| 313 |
|
|
|
| 314 |
|
|
CursorRow equ $40000
|
| 315 |
|
|
CursorCol equ $40001
|
| 316 |
|
|
TextPos equ $40002
|
| 317 |
|
|
TextCurpos equ $40002
|
| 318 |
|
|
TextScr equ $40004
|
| 319 |
|
|
S19StartAddress equ $40008
|
| 320 |
|
|
KeybdEcho equ $4000C
|
| 321 |
|
|
KeybdWaitFlag equ $4000D
|
| 322 |
|
|
CmdBuf equ $40040
|
| 323 |
|
|
CmdBufEnd equ $40080
|
| 324 |
|
|
fgColor equ $40084
|
| 325 |
|
|
bkColor equ $40088
|
| 326 |
|
|
TextRows equ $4008C
|
| 327 |
|
|
TextCols equ $4008D
|
| 328 |
|
|
Regsave equ $40100
|
| 329 |
|
|
numBreakpoints equ 8
|
| 330 |
|
|
BreakpointFlag equ $40200
|
| 331 |
|
|
NumSetBreakpoints equ $40202 ; to $40203
|
| 332 |
|
|
Breakpoints equ $40220 ; to $40240
|
| 333 |
|
|
BreakpointWords equ $40280 ; to $402A0
|
| 334 |
7 |
robfinch |
fpBuf equ $402C0
|
| 335 |
2 |
robfinch |
;RunningTCB equ $40300
|
| 336 |
7 |
robfinch |
_exp equ $40500
|
| 337 |
|
|
_digit equ $40504
|
| 338 |
|
|
_width equ $40508
|
| 339 |
|
|
_E equ $4050C
|
| 340 |
|
|
_digits_before_decpt equ $40510
|
| 341 |
|
|
_precision equ $40514
|
| 342 |
|
|
_fpBuf equ $40520 ; to $40560
|
| 343 |
|
|
_fpWork equ $40600
|
| 344 |
2 |
robfinch |
TimerStack equ $40BFC
|
| 345 |
|
|
|
| 346 |
|
|
; Keyboard buffer is in shared memory
|
| 347 |
3 |
robfinch |
IOFocus EQU $00100000
|
| 348 |
2 |
robfinch |
memend equ $00100004
|
| 349 |
|
|
KeybdLEDs equ $0010000E
|
| 350 |
|
|
_KeyState1 equ $0010000F
|
| 351 |
|
|
_KeyState2 equ $00100010
|
| 352 |
|
|
_KeybdHead equ $00100011
|
| 353 |
|
|
_KeybdTail equ $00100012
|
| 354 |
|
|
_KeybdCnt equ $00100013
|
| 355 |
|
|
KeybdID equ $00100016
|
| 356 |
|
|
_KeybdBuf equ $00100020
|
| 357 |
|
|
S19Checksum equ $00100150
|
| 358 |
|
|
SerTailRcv equ $00100160
|
| 359 |
|
|
SerHeadRcv equ $00100162
|
| 360 |
|
|
SerRcvXon equ $00100164
|
| 361 |
|
|
SerRcvXoff equ $00100165
|
| 362 |
|
|
SerRcvBuf equ $00101000
|
| 363 |
3 |
robfinch |
RTCBuf equ $00100200 ; to $0010023F
|
| 364 |
2 |
robfinch |
|
| 365 |
|
|
include "..\Femtiki\source\kernel\Femtiki_vars.x68"
|
| 366 |
|
|
|
| 367 |
|
|
code
|
| 368 |
|
|
align 2
|
| 369 |
|
|
start:
|
| 370 |
3 |
robfinch |
; fadd (a0)+,fp2
|
| 371 |
2 |
robfinch |
move.w #$2700,sr ; enable level 6 and higher interrupts
|
| 372 |
|
|
moveq #0,d0 ; set address space zero
|
| 373 |
|
|
movec d0,asid
|
| 374 |
3 |
robfinch |
; Setup circuit select signals
|
| 375 |
|
|
move.l #MMU,d0
|
| 376 |
|
|
movec d0,mmus
|
| 377 |
|
|
if HAS_MMU
|
| 378 |
|
|
move.l #$01F00000,d0 ; set virtual address for iop bitmap
|
| 379 |
|
|
movec d0,iops
|
| 380 |
|
|
move.l #$01E00000,d0 ; set virtual address for io block
|
| 381 |
|
|
movec d0,ios
|
| 382 |
|
|
else
|
| 383 |
|
|
move.l #$FD100000,d0 ; set virtual address for iop bitmap
|
| 384 |
|
|
movec d0,iops
|
| 385 |
|
|
move.l #$FD000000,d0 ; set virtual address for io block
|
| 386 |
|
|
movec d0,ios
|
| 387 |
|
|
endif
|
| 388 |
|
|
movec coreno,d0 ; set initial value of thread register
|
| 389 |
|
|
swap d0 ; coreno in high eight bits
|
| 390 |
|
|
lsl.l #8,d0
|
| 391 |
|
|
movec d0,tr
|
| 392 |
2 |
robfinch |
; Prepare local variable storage
|
| 393 |
|
|
move.w #1023,d0 ; 1024 longs to clear
|
| 394 |
|
|
lea $40000,a0 ; non shared local memory address
|
| 395 |
|
|
.0111:
|
| 396 |
|
|
clr.l (a0)+ ; clear the memory area
|
| 397 |
|
|
dbra d0,.0111
|
| 398 |
|
|
move.l #$1fffff,fgColor ; set foreground / background color
|
| 399 |
|
|
move.l #$00003f,bkColor
|
| 400 |
|
|
movec.l coreno,d0 ; get core number (2 to 9)
|
| 401 |
|
|
subi.b #2,d0 ; adjust (0 to 7)
|
| 402 |
|
|
mulu #16384,d0 ; compute screen location
|
| 403 |
3 |
robfinch |
if HAS_MMU
|
| 404 |
|
|
addi.l #$01E00000,d0
|
| 405 |
|
|
else
|
| 406 |
|
|
addi.l #$FD000000,d0
|
| 407 |
|
|
endif
|
| 408 |
2 |
robfinch |
move.l d0,TextScr
|
| 409 |
|
|
move.b #64,TextCols ; set rows and columns
|
| 410 |
|
|
move.b #32,TextRows
|
| 411 |
|
|
movec.l coreno,d0 ; get core number
|
| 412 |
|
|
cmpi.b #2,d0
|
| 413 |
|
|
bne start_other
|
| 414 |
|
|
move.b d0,IOFocus ; Set the IO focus in global memory
|
| 415 |
3 |
robfinch |
if HAS_MMU
|
| 416 |
|
|
bsr InitMMU ; Can't access anything till this is done
|
| 417 |
|
|
endif
|
| 418 |
|
|
bsr InitIOPBitmap ; not going to get far without this
|
| 419 |
2 |
robfinch |
bsr InitSemaphores
|
| 420 |
|
|
bsr InitRand
|
| 421 |
|
|
bsr Delay3s ; give devices time to reset
|
| 422 |
|
|
bsr clear_screen
|
| 423 |
|
|
|
| 424 |
|
|
bsr _KeybdInit
|
| 425 |
|
|
; bsr InitIRQ
|
| 426 |
|
|
bsr SerialInit
|
| 427 |
3 |
robfinch |
bsr init_i2c
|
| 428 |
|
|
; bsr rtc_read
|
| 429 |
2 |
robfinch |
|
| 430 |
|
|
; Write startup message to screen
|
| 431 |
|
|
|
| 432 |
|
|
lea msg_start,a1
|
| 433 |
|
|
bsr DisplayString
|
| 434 |
|
|
; bsr FemtikiInit
|
| 435 |
|
|
movec coreno,d0
|
| 436 |
|
|
swap d0
|
| 437 |
|
|
moveq #1,d1
|
| 438 |
|
|
bsr UnlockSemaphore ; allow another cpu access
|
| 439 |
|
|
moveq #0,d1
|
| 440 |
|
|
bsr UnlockSemaphore ; allow other cpus to proceed
|
| 441 |
|
|
move.w #$A4A4,leds ; diagnostics
|
| 442 |
|
|
bsr init_plic ; initialize platform level interrupt controller
|
| 443 |
|
|
bra StartMon
|
| 444 |
|
|
bsr cpu_test
|
| 445 |
|
|
; lea brdisp_trap,a0 ; set brdisp trap vector
|
| 446 |
|
|
; move.l a0,64*4
|
| 447 |
|
|
|
| 448 |
|
|
loop2:
|
| 449 |
|
|
move.l #-1,d0
|
| 450 |
|
|
loop1:
|
| 451 |
|
|
move.l d0,d1
|
| 452 |
|
|
lsr.l #8,d1
|
| 453 |
|
|
lsr.l #8,d1
|
| 454 |
|
|
move.b d1,leds
|
| 455 |
|
|
dbra d0,loop1
|
| 456 |
|
|
bra loop2
|
| 457 |
|
|
|
| 458 |
|
|
start_other:
|
| 459 |
|
|
bsr Delay3s2 ; need time for system setup (io_bitmap etc.)
|
| 460 |
3 |
robfinch |
bsr Delay3s2 ; need time for system setup (io_bitmap etc.)
|
| 461 |
2 |
robfinch |
bsr clear_screen
|
| 462 |
|
|
movec coreno,d1
|
| 463 |
|
|
bsr DisplayByte
|
| 464 |
|
|
lea msg_core_start,a1
|
| 465 |
|
|
bsr DisplayString
|
| 466 |
|
|
; bsr FemtikiInitIRQ
|
| 467 |
|
|
do_nothing:
|
| 468 |
|
|
bra StartMon
|
| 469 |
|
|
bra do_nothing
|
| 470 |
|
|
|
| 471 |
|
|
;------------------------------------------------------------------------------
|
| 472 |
|
|
; Initialize the MMU to allow thread #0 access to IO
|
| 473 |
|
|
;------------------------------------------------------------------------------
|
| 474 |
3 |
robfinch |
if HAS_MMU
|
| 475 |
2 |
robfinch |
align 2
|
| 476 |
|
|
mmu_adrtbl: ; virtual address[24:16], physical address[31:16] bytes reversed!
|
| 477 |
|
|
dc.l $0010,$10000300 ; global scratch pad
|
| 478 |
|
|
dc.l $01E0,$00FD0300
|
| 479 |
|
|
dc.l $01E1,$01FD0300
|
| 480 |
|
|
dc.l $01E2,$02FD0300
|
| 481 |
|
|
dc.l $01E3,$03FD0300
|
| 482 |
|
|
dc.l $01E5,$05FD0300
|
| 483 |
|
|
dc.l $01E6,$06FD0300
|
| 484 |
|
|
dc.l $01E9,$09FD0300
|
| 485 |
|
|
dc.l $01EF,$0FFD0300
|
| 486 |
|
|
dc.l $01F0,$10FD0300
|
| 487 |
3 |
robfinch |
dc.l $01FF,$FFFF0300 ; all ones output for IRQ ack needed
|
| 488 |
2 |
robfinch |
|
| 489 |
|
|
even
|
| 490 |
|
|
InitMMU:
|
| 491 |
|
|
lea MMU+8,a0 ; first 128kB is local RAM
|
| 492 |
|
|
move.l #$32000,d2 ; map all pages to DRAM
|
| 493 |
|
|
move.l #510,d0 ; then override for IO later
|
| 494 |
|
|
.0002
|
| 495 |
|
|
move.l d2,d1
|
| 496 |
|
|
bsr rbo
|
| 497 |
|
|
move.l d1,(a0)+
|
| 498 |
|
|
addi.w #1,d2 ; increment DRAM page number
|
| 499 |
|
|
dbra d0,.0002
|
| 500 |
|
|
lea MMU,a0 ; now program IO access
|
| 501 |
|
|
lea mmu_adrtbl,a1
|
| 502 |
3 |
robfinch |
moveq #10,d0
|
| 503 |
2 |
robfinch |
.0001
|
| 504 |
|
|
move.l (a1)+,d2
|
| 505 |
|
|
lsl.l #2,d2
|
| 506 |
|
|
move.l (a1)+,(a0,d2.w)
|
| 507 |
|
|
dbra d0,.0001
|
| 508 |
|
|
rts
|
| 509 |
3 |
robfinch |
endif
|
| 510 |
2 |
robfinch |
|
| 511 |
|
|
;------------------------------------------------------------------------------
|
| 512 |
|
|
; The IO bitmap needs to be initialized to allow access to IO.
|
| 513 |
|
|
;------------------------------------------------------------------------------
|
| 514 |
|
|
|
| 515 |
3 |
robfinch |
InitIOPBitmap:
|
| 516 |
|
|
moveq #0,d3 ; d3 = asid value
|
| 517 |
|
|
move.w #63,d0 ; 64 bitmaps to setup
|
| 518 |
|
|
movec iops,a0 ; a0 = IOP bitmap address
|
| 519 |
|
|
movea.l a0,a1 ; a1 = table address
|
| 520 |
|
|
.0004
|
| 521 |
|
|
tst.b d3
|
| 522 |
|
|
seq d1 ; set entire bitmap for asid 0, otherwise clear entire bitmap
|
| 523 |
|
|
ext.w d1 ; make into a long value
|
| 524 |
|
|
ext.l d1
|
| 525 |
|
|
move.w #127,d4
|
| 526 |
2 |
robfinch |
.0001
|
| 527 |
3 |
robfinch |
move.l d1,(a1)+ ; set or clear entire table
|
| 528 |
|
|
dbra d4,.0001
|
| 529 |
2 |
robfinch |
moveq #-1,d1
|
| 530 |
3 |
robfinch |
move.l d1,160(a0) ; all cores have access to semaphores
|
| 531 |
|
|
move.l d1,164(a0)
|
| 532 |
|
|
move.l d1,168(a0)
|
| 533 |
|
|
move.l d1,172(a0)
|
| 534 |
7 |
robfinch |
move.l #2,508(a0) ; all cores access random # generator
|
| 535 |
2 |
robfinch |
swap d0
|
| 536 |
3 |
robfinch |
move.w #31,d0 ; 32 long words for the screen area per bitmap
|
| 537 |
2 |
robfinch |
.0003
|
| 538 |
3 |
robfinch |
move.l d1,(a0)+ ; all cores have access to a screen
|
| 539 |
2 |
robfinch |
dbra d0,.0003
|
| 540 |
|
|
swap d0
|
| 541 |
3 |
robfinch |
addi.b #1,d3 ; do next address space
|
| 542 |
|
|
movea.l a1,a0 ; a0 points to area for next address space
|
| 543 |
2 |
robfinch |
dbra d0,.0004
|
| 544 |
|
|
rts
|
| 545 |
|
|
|
| 546 |
|
|
;------------------------------------------------------------------------------
|
| 547 |
|
|
; RandInit
|
| 548 |
|
|
; Initialize random number generator.
|
| 549 |
|
|
;
|
| 550 |
|
|
; Modifies:
|
| 551 |
|
|
; none
|
| 552 |
|
|
; Parameters:
|
| 553 |
|
|
; none
|
| 554 |
|
|
; Returns:
|
| 555 |
|
|
; none
|
| 556 |
|
|
;------------------------------------------------------------------------------
|
| 557 |
|
|
|
| 558 |
|
|
InitRand:
|
| 559 |
|
|
RandInit:
|
| 560 |
|
|
movem.l d0/d1,-(a7)
|
| 561 |
3 |
robfinch |
moveq #37,d0 ; lock semaphore
|
| 562 |
|
|
moveq #RAND_SEMA,d1
|
| 563 |
|
|
trap #15
|
| 564 |
|
|
movec coreno,d0 ; d0 = core number
|
| 565 |
|
|
lsl.l #6,d0 ; allow 64 streams per core
|
| 566 |
|
|
move.l d0,RAND_STRM ; select the stream
|
| 567 |
|
|
move.l #$12345678,RAND_MZ ; initialize to some value
|
| 568 |
|
|
move.l #$98765432,RAND_MW
|
| 569 |
|
|
move.l #777777777,RAND_NUM ; generate first number
|
| 570 |
|
|
moveq #38,d0 ; unlock semaphore
|
| 571 |
|
|
moveq #RAND_SEMA,d1
|
| 572 |
|
|
trap #15
|
| 573 |
2 |
robfinch |
movem.l (a7)+,d0/d1
|
| 574 |
|
|
rts
|
| 575 |
|
|
|
| 576 |
|
|
;------------------------------------------------------------------------------
|
| 577 |
|
|
;------------------------------------------------------------------------------
|
| 578 |
|
|
|
| 579 |
|
|
RandGetNum:
|
| 580 |
|
|
movem.l d0/d2,-(a7)
|
| 581 |
3 |
robfinch |
moveq #37,d0 ; lock semaphore
|
| 582 |
|
|
moveq #RAND_SEMA,d1
|
| 583 |
|
|
trap #15
|
| 584 |
|
|
movec coreno,d0
|
| 585 |
|
|
lsl.l #6,d0
|
| 586 |
|
|
move.l d0,RAND_STRM ; select the stream
|
| 587 |
|
|
move.l RAND_NUM,d2 ; d2 = random number
|
| 588 |
|
|
clr.l RAND_NUM ; generate next number
|
| 589 |
|
|
moveq #38,d0 ; unlock semaphore
|
| 590 |
|
|
moveq #RAND_SEMA,d1
|
| 591 |
|
|
trap #15
|
| 592 |
|
|
move.l d2,d1
|
| 593 |
2 |
robfinch |
movem.l (a7)+,d0/d2
|
| 594 |
|
|
rts
|
| 595 |
|
|
|
| 596 |
|
|
;------------------------------------------------------------------------------
|
| 597 |
|
|
; RandWait
|
| 598 |
|
|
; Wait some random number of clock cycles before returning.
|
| 599 |
|
|
;------------------------------------------------------------------------------
|
| 600 |
|
|
|
| 601 |
|
|
RandWait:
|
| 602 |
|
|
movem.l d0/d1,-(a7)
|
| 603 |
|
|
bsr RandGetNum
|
| 604 |
|
|
andi.w #15,d1
|
| 605 |
|
|
.0001:
|
| 606 |
|
|
nop
|
| 607 |
|
|
dbra d1,.0001
|
| 608 |
|
|
movem.l (a7)+,d0/d1
|
| 609 |
|
|
rts
|
| 610 |
|
|
|
| 611 |
|
|
;------------------------------------------------------------------------------
|
| 612 |
|
|
; Initialize semaphores
|
| 613 |
|
|
; - all semaphores are set to unlocked except the first one, which is locked
|
| 614 |
|
|
; for core #2.
|
| 615 |
|
|
;
|
| 616 |
|
|
; Parameters:
|
| 617 |
|
|
;
|
| 618 |
|
|
; Modifies:
|
| 619 |
|
|
;
|
| 620 |
|
|
; Returns:
|
| 621 |
|
|
;
|
| 622 |
|
|
;------------------------------------------------------------------------------
|
| 623 |
|
|
|
| 624 |
|
|
InitSemaphores:
|
| 625 |
|
|
movem.l d1/a0,-(a7)
|
| 626 |
|
|
lea semamem,a0
|
| 627 |
|
|
move.l #$20000,$2000(a0) ; lock the first semaphore for core #2, thread #0
|
| 628 |
|
|
move.w #254,d1
|
| 629 |
|
|
.0001:
|
| 630 |
|
|
lea 4(a0),a0
|
| 631 |
|
|
clr.l $2000(a0) ; write zeros to unlock
|
| 632 |
|
|
dbra d1,.0001
|
| 633 |
|
|
movem.l (a7)+,d1/a0
|
| 634 |
|
|
rts
|
| 635 |
|
|
|
| 636 |
|
|
; -----------------------------------------------------------------------------
|
| 637 |
|
|
; Parameters:
|
| 638 |
|
|
; d1 semaphore number
|
| 639 |
|
|
;
|
| 640 |
|
|
; Side Effects:
|
| 641 |
|
|
; increments semaphore, saturates at 255
|
| 642 |
|
|
;
|
| 643 |
|
|
; Returns:
|
| 644 |
|
|
; z flag set if semaphore was zero
|
| 645 |
|
|
; -----------------------------------------------------------------------------
|
| 646 |
|
|
|
| 647 |
|
|
;IncrementSemaphore:
|
| 648 |
|
|
; movem.l d1/a0,-(a7) ; save registers
|
| 649 |
|
|
; lea semamem,a0 ; point to semaphore memory
|
| 650 |
|
|
; ext.w d1 ; make d1 word value
|
| 651 |
|
|
; asl.w #4,d1 ; align to memory
|
| 652 |
|
|
; tst.b 1(a0,d1.w) ; read (test) value for zero
|
| 653 |
|
|
; movem.l (a7)+,a0/d1 ; restore regs
|
| 654 |
|
|
; rts
|
| 655 |
|
|
|
| 656 |
|
|
; -----------------------------------------------------------------------------
|
| 657 |
|
|
; Parameters:
|
| 658 |
|
|
; d1 semaphore number
|
| 659 |
|
|
;
|
| 660 |
|
|
; Side Effects:
|
| 661 |
|
|
; decrements semaphore, saturates at zero
|
| 662 |
|
|
;
|
| 663 |
|
|
; Returns:
|
| 664 |
|
|
; z flag set if semaphore was zero
|
| 665 |
|
|
; -----------------------------------------------------------------------------
|
| 666 |
|
|
|
| 667 |
|
|
;DecrementSemaphore:
|
| 668 |
|
|
; movem.l d1/a0,-(a7) ; save registers
|
| 669 |
|
|
; lea semamem,a0 ; point to semaphore memory
|
| 670 |
|
|
; andi.w #255,d1 ; make d1 word value
|
| 671 |
|
|
; asl.w #4,d1 ; align to memory
|
| 672 |
|
|
; tst.b 1(a0,d1.w) ; read (test) value for zero
|
| 673 |
|
|
; movem.l (a7)+,a0/d1 ; restore regs
|
| 674 |
|
|
; rts
|
| 675 |
|
|
|
| 676 |
|
|
; -----------------------------------------------------------------------------
|
| 677 |
|
|
; Lock a semaphore
|
| 678 |
|
|
;
|
| 679 |
|
|
; Parameters:
|
| 680 |
|
|
; d0 = key
|
| 681 |
|
|
; d1 = semaphore number
|
| 682 |
|
|
; -----------------------------------------------------------------------------
|
| 683 |
|
|
|
| 684 |
|
|
LockSemaphore:
|
| 685 |
3 |
robfinch |
rts
|
| 686 |
2 |
robfinch |
movem.l d1/a0,-(a7) ; save registers
|
| 687 |
|
|
lea semamem,a0 ; point to semaphore memory lock area
|
| 688 |
|
|
andi.w #255,d1 ; make d1 word value
|
| 689 |
|
|
lsl.w #2,d1 ; align to memory
|
| 690 |
3 |
robfinch |
.0001
|
| 691 |
2 |
robfinch |
move.l d0,(a0,d1.w) ; try and write the semaphore
|
| 692 |
|
|
cmp.l (a0,d1.w),d0 ; did it lock?
|
| 693 |
|
|
bne.s .0001 ; no, try again
|
| 694 |
|
|
movem.l (a7)+,a0/d1 ; restore regs
|
| 695 |
|
|
rts
|
| 696 |
|
|
|
| 697 |
|
|
; -----------------------------------------------------------------------------
|
| 698 |
|
|
; Unlocks a semaphore even if not the owner.
|
| 699 |
|
|
;
|
| 700 |
|
|
; Parameters:
|
| 701 |
|
|
; d1 semaphore number
|
| 702 |
|
|
; -----------------------------------------------------------------------------
|
| 703 |
|
|
|
| 704 |
|
|
ForceUnlockSemaphore:
|
| 705 |
|
|
movem.l d1/a0,-(a7) ; save registers
|
| 706 |
|
|
lea semamem+$3000,a0 ; point to semaphore memory read/write area
|
| 707 |
|
|
andi.w #255,d1 ; make d1 word value
|
| 708 |
|
|
lsl.w #2,d1 ; align to memory
|
| 709 |
|
|
clr.l (a0,d1.w) ; write zero to unlock
|
| 710 |
|
|
movem.l (a7)+,a0/d1 ; restore regs
|
| 711 |
|
|
rts
|
| 712 |
|
|
|
| 713 |
|
|
; -----------------------------------------------------------------------------
|
| 714 |
|
|
; Unlocks a semaphore. Must be the owner to have effect.
|
| 715 |
|
|
; Three cases:
|
| 716 |
|
|
; 1) the owner, the semaphore will be reset to zero
|
| 717 |
|
|
; 2) not the owner, the write will be ignored
|
| 718 |
|
|
; 3) already unlocked, the write will be ignored
|
| 719 |
|
|
;
|
| 720 |
|
|
; Parameters:
|
| 721 |
|
|
; d0 = key
|
| 722 |
|
|
; d1 = semaphore number
|
| 723 |
|
|
; -----------------------------------------------------------------------------
|
| 724 |
|
|
|
| 725 |
|
|
UnlockSemaphore:
|
| 726 |
3 |
robfinch |
bra ForceUnlockSemaphore
|
| 727 |
2 |
robfinch |
movem.l d1/a0,-(a7) ; save registers
|
| 728 |
|
|
lea semamem+$1000,a0 ; point to semaphore memory unlock area
|
| 729 |
|
|
andi.w #255,d1 ; make d1 word value
|
| 730 |
|
|
lsl.w #2,d1 ; align to memory
|
| 731 |
|
|
move.l d0,(a0,d1.w) ; write matching value to unlock
|
| 732 |
|
|
movem.l (a7)+,a0/d1 ; restore regs
|
| 733 |
|
|
rts
|
| 734 |
|
|
|
| 735 |
|
|
; -----------------------------------------------------------------------------
|
| 736 |
|
|
; Parameters:
|
| 737 |
|
|
; d1 = semaphore to lock / unlock
|
| 738 |
|
|
; -----------------------------------------------------------------------------
|
| 739 |
|
|
|
| 740 |
|
|
T15LockSemaphore:
|
| 741 |
3 |
robfinch |
movec tr,d0
|
| 742 |
2 |
robfinch |
bra LockSemaphore
|
| 743 |
|
|
|
| 744 |
|
|
T15UnlockSemaphore:
|
| 745 |
3 |
robfinch |
movec tr,d0
|
| 746 |
2 |
robfinch |
bra UnlockSemaphore
|
| 747 |
|
|
|
| 748 |
|
|
; -----------------------------------------------------------------------------
|
| 749 |
|
|
; Delay for a few seconds to allow some I/O reset operations to take place.
|
| 750 |
|
|
; -----------------------------------------------------------------------------
|
| 751 |
|
|
|
| 752 |
|
|
Delay3s:
|
| 753 |
|
|
move.l #3000000,d0 ; this should take a few seconds to loop
|
| 754 |
|
|
lea leds,a0 ; a0 = address of LED output register
|
| 755 |
|
|
bra dly3s1 ; branch to the loop
|
| 756 |
|
|
dly3s2:
|
| 757 |
|
|
swap d0 ; loop is larger than 16-bits
|
| 758 |
|
|
dly3s1:
|
| 759 |
|
|
move.l d0,d1 ; the counter cycles fast, so use upper bits for display
|
| 760 |
|
|
rol.l #8,d1 ; could use swap here, but lets test rol
|
| 761 |
|
|
rol.l #8,d1
|
| 762 |
|
|
move.b d1,(a0) ; set the LEDs
|
| 763 |
|
|
dbra d0,dly3s1 ; decrement and branch back
|
| 764 |
|
|
swap d0
|
| 765 |
|
|
dbra d0,dly3s2
|
| 766 |
|
|
rts
|
| 767 |
|
|
|
| 768 |
|
|
Delay3s2:
|
| 769 |
|
|
movec coreno,d0 ; vary delay by core to stagger startup
|
| 770 |
|
|
lsl.l #8,d0
|
| 771 |
|
|
addi.l #3000000,d0 ; this should take a few seconds to loop
|
| 772 |
|
|
bra .0001 ; branch to the loop
|
| 773 |
|
|
.0002
|
| 774 |
|
|
swap d0 ; loop is larger than 16-bits
|
| 775 |
|
|
.0001
|
| 776 |
|
|
dbra d0,.0001 ; decrement and branch back
|
| 777 |
|
|
swap d0
|
| 778 |
|
|
dbra d0,.0002
|
| 779 |
|
|
rts
|
| 780 |
|
|
|
| 781 |
|
|
include "cputest.asm"
|
| 782 |
|
|
include "TinyBasic.asm"
|
| 783 |
|
|
include "..\Femtiki\source\kernel\Femtiki.x68"
|
| 784 |
|
|
|
| 785 |
|
|
; -----------------------------------------------------------------------------
|
| 786 |
|
|
; Gets the screen color in d0 and d1.
|
| 787 |
|
|
; -----------------------------------------------------------------------------
|
| 788 |
|
|
|
| 789 |
|
|
get_screen_color:
|
| 790 |
|
|
move.l fgColor,d0 ; get foreground color
|
| 791 |
|
|
asl.l #5,d0 ; shift into position
|
| 792 |
|
|
ori.l #$40000000,d0 ; set priority
|
| 793 |
|
|
move.l bkColor,d1
|
| 794 |
|
|
lsr.l #8,d1
|
| 795 |
|
|
lsr.l #8,d1
|
| 796 |
|
|
andi.l #31,d1 ; mask off extra bits
|
| 797 |
|
|
or.l d1,d0 ; set background color bits in upper long word
|
| 798 |
|
|
move.l bkColor,d1 ; get background color
|
| 799 |
|
|
asl.l #8,d1 ; shift into position for display ram
|
| 800 |
|
|
asl.l #8,d1
|
| 801 |
|
|
rts
|
| 802 |
|
|
|
| 803 |
|
|
; -----------------------------------------------------------------------------
|
| 804 |
|
|
; -----------------------------------------------------------------------------
|
| 805 |
|
|
|
| 806 |
|
|
get_screen_address:
|
| 807 |
|
|
move.l TextScr,a0
|
| 808 |
|
|
rts
|
| 809 |
|
|
|
| 810 |
|
|
; -----------------------------------------------------------------------------
|
| 811 |
|
|
; -----------------------------------------------------------------------------
|
| 812 |
|
|
|
| 813 |
|
|
clear_screen:
|
| 814 |
|
|
movem.l d0/d1/d2/a0,-(a7)
|
| 815 |
|
|
movec coreno,d0
|
| 816 |
|
|
swap d0
|
| 817 |
|
|
moveq #SCREEN_SEMA,d1
|
| 818 |
|
|
bsr LockSemaphore
|
| 819 |
|
|
bsr get_screen_address ; a0 = pointer to screen area
|
| 820 |
|
|
move.b TextRows,d0 ; d0 = rows
|
| 821 |
|
|
move.b TextCols,d2 ; d2 = cols
|
| 822 |
|
|
ext.w d0 ; convert to word
|
| 823 |
|
|
ext.w d2 ; convert to word
|
| 824 |
|
|
mulu d0,d2 ; d2 = number of character cells to clear
|
| 825 |
|
|
bsr get_screen_color ; get the color bits
|
| 826 |
|
|
ori.w #32,d1 ; load space character
|
| 827 |
|
|
rol.w #8,d1 ; swap endian, text controller expects little endian
|
| 828 |
|
|
swap d1
|
| 829 |
|
|
rol.w #8,d1
|
| 830 |
|
|
rol.w #8,d0 ; swap endian
|
| 831 |
|
|
swap d0
|
| 832 |
|
|
rol.w #8,d0
|
| 833 |
|
|
loop3:
|
| 834 |
|
|
move.l d1,(a0)+ ; copy char plus bkcolor to cell
|
| 835 |
|
|
move.l d0,(a0)+ ; copy fgcolor to cell
|
| 836 |
|
|
dbra d2,loop3
|
| 837 |
|
|
movec coreno,d0
|
| 838 |
|
|
swap d0
|
| 839 |
|
|
moveq #SCREEN_SEMA,d1
|
| 840 |
|
|
bsr UnlockSemaphore
|
| 841 |
|
|
movem.l (a7)+,d0/d1/d2/a0
|
| 842 |
|
|
rts
|
| 843 |
|
|
|
| 844 |
|
|
CRLF:
|
| 845 |
|
|
move.l d1,-(a7)
|
| 846 |
|
|
move.b #13,d1
|
| 847 |
|
|
bsr DisplayChar
|
| 848 |
|
|
move.b #10,d1
|
| 849 |
|
|
bsr DisplayChar
|
| 850 |
|
|
move.l (a7)+,d1
|
| 851 |
|
|
rts
|
| 852 |
|
|
|
| 853 |
|
|
;------------------------------------------------------------------------------
|
| 854 |
|
|
;------------------------------------------------------------------------------
|
| 855 |
|
|
|
| 856 |
|
|
UpdateTextPos:
|
| 857 |
|
|
move.b CursorRow,d0 ; compute screen location
|
| 858 |
|
|
andi.w #$7f,d0
|
| 859 |
|
|
move.b TextCols,d2
|
| 860 |
|
|
ext.w d2
|
| 861 |
|
|
mulu.w d2,d0
|
| 862 |
|
|
move.l d0,d3
|
| 863 |
|
|
move.b CursorCol,d2
|
| 864 |
|
|
andi.w #$ff,d2
|
| 865 |
|
|
add.w d2,d0
|
| 866 |
|
|
move.w d0,TextPos ; save cursor pos
|
| 867 |
|
|
rts
|
| 868 |
|
|
|
| 869 |
|
|
;------------------------------------------------------------------------------
|
| 870 |
|
|
; Calculate screen memory location from CursorRow,CursorCol.
|
| 871 |
|
|
; Destroys d0,d2,a0
|
| 872 |
|
|
;------------------------------------------------------------------------------
|
| 873 |
|
|
|
| 874 |
|
|
CalcScreenLoc:
|
| 875 |
|
|
bsr UpdateTextPos
|
| 876 |
|
|
ext.l d0 ; make it into a long
|
| 877 |
|
|
asl.l #3,d0 ; 8 bytes per char
|
| 878 |
|
|
bsr get_screen_address
|
| 879 |
|
|
add.l d0,a0 ; a0 = screen location
|
| 880 |
|
|
rts
|
| 881 |
|
|
|
| 882 |
|
|
;------------------------------------------------------------------------------
|
| 883 |
|
|
; Display a character on the screen
|
| 884 |
|
|
; d1.b = char to display
|
| 885 |
|
|
;------------------------------------------------------------------------------
|
| 886 |
|
|
|
| 887 |
|
|
DisplayChar:
|
| 888 |
|
|
movem.l d1/d2/d3,-(a7)
|
| 889 |
|
|
movec coreno,d2
|
| 890 |
|
|
cmpi.b #2,d2
|
| 891 |
|
|
; bne.s .0001
|
| 892 |
|
|
; bsr SerialPutChar
|
| 893 |
|
|
.0001:
|
| 894 |
|
|
andi.l #$ff,d1 ; zero out upper bytes of d1
|
| 895 |
|
|
cmpi.b #13,d1 ; carriage return ?
|
| 896 |
|
|
bne dccr
|
| 897 |
|
|
clr.b CursorCol ; just set cursor column to zero on a CR
|
| 898 |
|
|
dcx14:
|
| 899 |
|
|
bsr SyncCursor ; set position in text controller
|
| 900 |
|
|
dcx7:
|
| 901 |
|
|
movem.l (a7)+,d1/d2/d3
|
| 902 |
|
|
rts
|
| 903 |
|
|
dccr:
|
| 904 |
|
|
cmpi.b #$91,d1 ; cursor right ?
|
| 905 |
|
|
bne.s dcx6
|
| 906 |
|
|
move.b TextCols,d2
|
| 907 |
|
|
sub.b #1,d2
|
| 908 |
|
|
sub.b CursorCol,d2
|
| 909 |
|
|
beq.s dcx7
|
| 910 |
|
|
addi.b #1,CursorCol
|
| 911 |
|
|
bra.s dcx14
|
| 912 |
|
|
dcx6:
|
| 913 |
|
|
cmpi.b #$90,d1 ; cursor up ?
|
| 914 |
|
|
bne.s dcx8
|
| 915 |
|
|
cmpi.b #0,CursorRow
|
| 916 |
|
|
beq.s dcx7
|
| 917 |
|
|
subi.b #1,CursorRow
|
| 918 |
|
|
bra.s dcx14
|
| 919 |
|
|
dcx8:
|
| 920 |
|
|
cmpi.b #$93,d1 ; cursor left?
|
| 921 |
|
|
bne.s dcx9
|
| 922 |
|
|
cmpi.b #0,CursorCol
|
| 923 |
|
|
beq.s dcx7
|
| 924 |
|
|
subi.b #1,CursorCol
|
| 925 |
|
|
bra.s dcx14
|
| 926 |
|
|
dcx9:
|
| 927 |
|
|
cmpi.b #$92,d1 ; cursor down ?
|
| 928 |
|
|
bne.s dcx10
|
| 929 |
|
|
move.b TextRows,d2
|
| 930 |
|
|
sub.b #1,d2
|
| 931 |
|
|
cmp.b CursorRow,d2
|
| 932 |
|
|
beq.s dcx7
|
| 933 |
|
|
addi.b #1,CursorRow
|
| 934 |
|
|
bra.s dcx14
|
| 935 |
|
|
dcx10:
|
| 936 |
|
|
cmpi.b #$94,d1 ; cursor home ?
|
| 937 |
|
|
bne.s dcx11
|
| 938 |
|
|
cmpi.b #0,CursorCol
|
| 939 |
|
|
beq.s dcx12
|
| 940 |
|
|
clr.b CursorCol
|
| 941 |
|
|
bra dcx14
|
| 942 |
|
|
dcx12:
|
| 943 |
|
|
clr.b CursorRow
|
| 944 |
|
|
bra dcx14
|
| 945 |
|
|
dcx11:
|
| 946 |
|
|
movem.l d0/d1/d2/a0,-(a7)
|
| 947 |
|
|
cmpi.b #$99,d1 ; delete ?
|
| 948 |
|
|
beq.s doDelete
|
| 949 |
|
|
cmpi.b #CTRLH,d1 ; backspace ?
|
| 950 |
|
|
beq.s doBackspace
|
| 951 |
|
|
cmpi.b #CTRLX,d1 ; delete line ?
|
| 952 |
|
|
beq doCtrlX
|
| 953 |
|
|
cmpi.b #10,d1 ; linefeed ?
|
| 954 |
|
|
beq.s dclf
|
| 955 |
|
|
|
| 956 |
|
|
; regular char
|
| 957 |
|
|
bsr CalcScreenLoc ; a0 = screen location
|
| 958 |
|
|
move.l d1,d2 ; d2 = char
|
| 959 |
|
|
bsr get_screen_color ; d0,d1 = color
|
| 960 |
|
|
or.l d2,d1 ; d1 = char + color
|
| 961 |
|
|
rol.w #8,d1 ; text controller expects little endian data
|
| 962 |
|
|
swap d1
|
| 963 |
|
|
rol.w #8,d1
|
| 964 |
|
|
move.l d1,(a0)
|
| 965 |
|
|
rol.w #8,d0 ; swap bytes
|
| 966 |
|
|
swap d0 ; swap halfs
|
| 967 |
|
|
rol.w #8,d0 ; swap remaining bytes
|
| 968 |
|
|
move.l d0,4(a0)
|
| 969 |
|
|
bsr IncCursorPos
|
| 970 |
|
|
bsr SyncCursor
|
| 971 |
|
|
bra dcx4
|
| 972 |
|
|
dclf:
|
| 973 |
|
|
bsr IncCursorRow
|
| 974 |
|
|
dcx16:
|
| 975 |
|
|
bsr SyncCursor
|
| 976 |
|
|
dcx4:
|
| 977 |
|
|
movem.l (a7)+,d0/d1/d2/a0 ; get back a0
|
| 978 |
|
|
movem.l (a7)+,d1/d2/d3
|
| 979 |
|
|
rts
|
| 980 |
|
|
|
| 981 |
|
|
;---------------------------
|
| 982 |
|
|
; CTRL-H: backspace
|
| 983 |
|
|
;---------------------------
|
| 984 |
|
|
doBackspace:
|
| 985 |
|
|
cmpi.b #0,CursorCol ; if already at start of line
|
| 986 |
|
|
beq.s dcx4 ; nothing to do
|
| 987 |
|
|
subi.b #1,CursorCol ; decrement column
|
| 988 |
|
|
|
| 989 |
|
|
;---------------------------
|
| 990 |
|
|
; Delete key
|
| 991 |
|
|
;---------------------------
|
| 992 |
|
|
doDelete:
|
| 993 |
|
|
movem.l d0/d1/a0,-(a7) ; save off screen location
|
| 994 |
|
|
bsr CalcScreenLoc ; a0 = screen location
|
| 995 |
|
|
move.b CursorCol,d0
|
| 996 |
|
|
.0001:
|
| 997 |
|
|
move.l 8(a0),(a0) ; pull remaining characters on line over 1
|
| 998 |
|
|
move.l 12(a0),4(a0) ; pull remaining characters on line over 1
|
| 999 |
|
|
lea 8(a0),a0
|
| 1000 |
|
|
addi.b #1,d0
|
| 1001 |
|
|
cmp.b TextCols,d0
|
| 1002 |
|
|
blo.s .0001
|
| 1003 |
|
|
bsr get_screen_color
|
| 1004 |
|
|
move.w #' ',d1 ; terminate line with a space
|
| 1005 |
|
|
rol.w #8,d1
|
| 1006 |
|
|
swap d1
|
| 1007 |
|
|
rol.w #8,d1
|
| 1008 |
|
|
move.l d1,-8(a0)
|
| 1009 |
|
|
movem.l (a7)+,d0/d1/a0
|
| 1010 |
|
|
bra.s dcx16 ; finished
|
| 1011 |
|
|
|
| 1012 |
|
|
;---------------------------
|
| 1013 |
|
|
; CTRL-X: erase line
|
| 1014 |
|
|
;---------------------------
|
| 1015 |
|
|
doCtrlX:
|
| 1016 |
|
|
clr.b CursorCol ; Reset cursor to start of line
|
| 1017 |
|
|
move.b TextCols,d0 ; and display TextCols number of spaces
|
| 1018 |
|
|
ext.w d0
|
| 1019 |
|
|
ext.l d0
|
| 1020 |
|
|
move.b #' ',d1 ; d1 = space char
|
| 1021 |
|
|
.0001:
|
| 1022 |
|
|
; DisplayChar is called recursively here
|
| 1023 |
|
|
; It's safe to do because we know it won't recurse again due to the
|
| 1024 |
|
|
; fact we know the character being displayed is a space char
|
| 1025 |
|
|
bsr DisplayChar
|
| 1026 |
|
|
subq #1,d0
|
| 1027 |
|
|
bne.s .0001
|
| 1028 |
|
|
clr.b CursorCol ; now really go back to start of line
|
| 1029 |
|
|
bra.s dcx16 ; we're done
|
| 1030 |
|
|
|
| 1031 |
|
|
;------------------------------------------------------------------------------
|
| 1032 |
|
|
; Increment the cursor position, scroll the screen if needed.
|
| 1033 |
|
|
;------------------------------------------------------------------------------
|
| 1034 |
|
|
|
| 1035 |
|
|
IncCursorPos:
|
| 1036 |
|
|
addi.w #1,TextCurpos
|
| 1037 |
|
|
addi.b #1,CursorCol
|
| 1038 |
|
|
move.b TextCols,d0
|
| 1039 |
|
|
cmp.b CursorCol,d0
|
| 1040 |
|
|
bhs.s icc1
|
| 1041 |
|
|
clr.b CursorCol
|
| 1042 |
|
|
IncCursorRow:
|
| 1043 |
|
|
addi.b #1,CursorRow
|
| 1044 |
|
|
move.b TextRows,d0
|
| 1045 |
|
|
cmp.b CursorRow,d0
|
| 1046 |
|
|
bhi.s icc1
|
| 1047 |
|
|
move.b TextRows,d0
|
| 1048 |
|
|
move.b d0,CursorRow ; in case CursorRow is way over
|
| 1049 |
|
|
subi.b #1,CursorRow
|
| 1050 |
|
|
ext.w d0
|
| 1051 |
|
|
asl.w #1,d0
|
| 1052 |
|
|
sub.w d0,TextCurpos
|
| 1053 |
|
|
bsr ScrollUp
|
| 1054 |
|
|
icc1:
|
| 1055 |
|
|
rts
|
| 1056 |
|
|
|
| 1057 |
|
|
;------------------------------------------------------------------------------
|
| 1058 |
|
|
; Scroll screen up.
|
| 1059 |
|
|
;------------------------------------------------------------------------------
|
| 1060 |
|
|
|
| 1061 |
|
|
ScrollUp:
|
| 1062 |
|
|
movem.l d0/d1/a0/a5,-(a7) ; save off some regs
|
| 1063 |
|
|
movec coreno,d0
|
| 1064 |
|
|
swap d0
|
| 1065 |
|
|
moveq #SCREEN_SEMA,d1
|
| 1066 |
|
|
bsr LockSemaphore
|
| 1067 |
|
|
bsr get_screen_address
|
| 1068 |
|
|
move.l a0,a5 ; a5 = pointer to text screen
|
| 1069 |
|
|
.0003:
|
| 1070 |
|
|
move.b TextCols,d0 ; d0 = columns
|
| 1071 |
|
|
move.b TextRows,d1 ; d1 = rows
|
| 1072 |
|
|
ext.w d0 ; make cols into a word value
|
| 1073 |
|
|
ext.w d1 ; make rows into a word value
|
| 1074 |
|
|
asl.w #3,d0 ; make into cell index
|
| 1075 |
|
|
lea 0(a5,d0.w),a0 ; a0 = pointer to second row of text screen
|
| 1076 |
|
|
lsr.w #3,d0 ; get back d0
|
| 1077 |
|
|
subq #1,d1 ; number of rows-1
|
| 1078 |
|
|
mulu d1,d0 ; d0 = count of characters to move
|
| 1079 |
|
|
.0001:
|
| 1080 |
|
|
move.l (a0)+,(a5)+ ; each char is 64 bits
|
| 1081 |
|
|
move.l (a0)+,(a5)+
|
| 1082 |
|
|
dbra d0,.0001
|
| 1083 |
|
|
movec coreno,d0
|
| 1084 |
|
|
swap d0
|
| 1085 |
|
|
moveq #SCREEN_SEMA,d1
|
| 1086 |
|
|
bsr UnlockSemaphore
|
| 1087 |
|
|
movem.l (a7)+,d0/d1/a0/a5
|
| 1088 |
|
|
; Fall through into blanking out last line
|
| 1089 |
|
|
|
| 1090 |
|
|
;------------------------------------------------------------------------------
|
| 1091 |
|
|
; Blank out the last line on the screen.
|
| 1092 |
|
|
;------------------------------------------------------------------------------
|
| 1093 |
|
|
|
| 1094 |
|
|
BlankLastLine:
|
| 1095 |
|
|
movem.l d0/d1/d2/a0,-(a7)
|
| 1096 |
|
|
movec coreno,d0
|
| 1097 |
|
|
swap d0
|
| 1098 |
|
|
moveq #SCREEN_SEMA,d1
|
| 1099 |
|
|
bsr LockSemaphore
|
| 1100 |
|
|
bsr get_screen_address
|
| 1101 |
|
|
move.b TextRows,d0 ; d0 = rows
|
| 1102 |
|
|
move.b TextCols,d1 ; d1 = columns
|
| 1103 |
|
|
ext.w d0
|
| 1104 |
|
|
ext.w d1
|
| 1105 |
|
|
subq #1,d0 ; last row = #rows-1
|
| 1106 |
|
|
mulu d1,d0 ; d0 = index of last line
|
| 1107 |
|
|
lsl.w #3,d0 ; *8 bytes per char
|
| 1108 |
|
|
lea (a0,d0.w),a0 ; point a0 to last row
|
| 1109 |
|
|
move.b TextCols,d2 ; number of text cells to clear
|
| 1110 |
|
|
ext.w d2
|
| 1111 |
|
|
subi.w #1,d2 ; count must be one less than desired
|
| 1112 |
|
|
bsr get_screen_color ; d0,d1 = screen color
|
| 1113 |
|
|
move.w #32,d1 ; set the character for display in low 16 bits
|
| 1114 |
|
|
bsr rbo ; reverse the byte order
|
| 1115 |
|
|
rol.w #8,d0
|
| 1116 |
|
|
swap d0
|
| 1117 |
|
|
rol.w #8,d0
|
| 1118 |
|
|
.0001:
|
| 1119 |
|
|
move.l d0,(a0)+
|
| 1120 |
|
|
move.l d1,(a0)+
|
| 1121 |
|
|
dbra d2,.0001
|
| 1122 |
|
|
movec coreno,d0
|
| 1123 |
|
|
swap d0
|
| 1124 |
|
|
moveq #SCREEN_SEMA,d1
|
| 1125 |
|
|
bsr UnlockSemaphore
|
| 1126 |
|
|
movem.l (a7)+,d0/d1/d2/a0
|
| 1127 |
|
|
rts
|
| 1128 |
|
|
|
| 1129 |
|
|
;------------------------------------------------------------------------------
|
| 1130 |
|
|
; Display a string on the screen.
|
| 1131 |
|
|
;------------------------------------------------------------------------------
|
| 1132 |
|
|
|
| 1133 |
|
|
DisplayString:
|
| 1134 |
|
|
movem.l d0/d1/a1,-(a7)
|
| 1135 |
|
|
dspj1:
|
| 1136 |
|
|
clr.l d1 ; clear upper bits of d1
|
| 1137 |
|
|
move.b (a1)+,d1 ; move string char into d1
|
| 1138 |
|
|
beq.s dsret ; is it end of string ?
|
| 1139 |
|
|
bsr DisplayChar ; display character
|
| 1140 |
|
|
bra.s dspj1 ; go back for next character
|
| 1141 |
|
|
dsret:
|
| 1142 |
|
|
movem.l (a7)+,d0/d1/a1
|
| 1143 |
|
|
rts
|
| 1144 |
|
|
|
| 1145 |
|
|
;------------------------------------------------------------------------------
|
| 1146 |
|
|
; Display a string on the screen followed by carriage return / linefeed.
|
| 1147 |
|
|
;------------------------------------------------------------------------------
|
| 1148 |
|
|
|
| 1149 |
|
|
DisplayStringCRLF:
|
| 1150 |
|
|
bsr DisplayString
|
| 1151 |
|
|
bra CRLF
|
| 1152 |
|
|
|
| 1153 |
|
|
;------------------------------------------------------------------------------
|
| 1154 |
|
|
; Display a string on the screen limited to 255 chars max.
|
| 1155 |
|
|
;------------------------------------------------------------------------------
|
| 1156 |
|
|
|
| 1157 |
|
|
DisplayStringLimited:
|
| 1158 |
|
|
movem.l d0/d1/d2/a1,-(a7)
|
| 1159 |
|
|
move.w d1,d2 ; d2 = max count
|
| 1160 |
|
|
andi.w #$00FF,d2 ; limit to 255 chars
|
| 1161 |
|
|
bra.s .0003 ; enter loop at bottom
|
| 1162 |
|
|
.0001:
|
| 1163 |
|
|
clr.l d1 ; clear upper bits of d1
|
| 1164 |
|
|
move.b (a1)+,d1 ; move string char into d1
|
| 1165 |
|
|
beq.s .0002 ; is it end of string ?
|
| 1166 |
|
|
bsr DisplayChar ; display character
|
| 1167 |
|
|
.0003:
|
| 1168 |
|
|
dbra d2,.0001 ; go back for next character
|
| 1169 |
|
|
.0002:
|
| 1170 |
|
|
movem.l (a7)+,d0/d1/d2/a1
|
| 1171 |
|
|
rts
|
| 1172 |
|
|
|
| 1173 |
|
|
DisplayStringLimitedCRLF:
|
| 1174 |
|
|
bsr DisplayStringLimited
|
| 1175 |
|
|
bra CRLF
|
| 1176 |
|
|
|
| 1177 |
|
|
;------------------------------------------------------------------------------
|
| 1178 |
|
|
; Set cursor position to top left of screen.
|
| 1179 |
|
|
;
|
| 1180 |
|
|
; Parameters:
|
| 1181 |
|
|
;
|
| 1182 |
|
|
; Returns:
|
| 1183 |
|
|
;
|
| 1184 |
|
|
; Registers Affected:
|
| 1185 |
|
|
;
|
| 1186 |
|
|
;------------------------------------------------------------------------------
|
| 1187 |
|
|
|
| 1188 |
|
|
HomeCursor:
|
| 1189 |
|
|
clr.b CursorRow
|
| 1190 |
|
|
clr.b CursorCol
|
| 1191 |
|
|
clr.w TextPos
|
| 1192 |
|
|
; fall through
|
| 1193 |
|
|
|
| 1194 |
|
|
;------------------------------------------------------------------------------
|
| 1195 |
|
|
; SyncCursor:
|
| 1196 |
|
|
;
|
| 1197 |
|
|
; Sync the hardware cursor's position to the text cursor position but only for
|
| 1198 |
|
|
; the core with the IO focus.
|
| 1199 |
|
|
;
|
| 1200 |
|
|
; Parameters:
|
| 1201 |
|
|
;
|
| 1202 |
|
|
; Returns:
|
| 1203 |
|
|
;
|
| 1204 |
|
|
; Registers Affected:
|
| 1205 |
|
|
;
|
| 1206 |
|
|
;------------------------------------------------------------------------------
|
| 1207 |
|
|
|
| 1208 |
|
|
SyncCursor:
|
| 1209 |
|
|
movem.l d0/d2,-(a7)
|
| 1210 |
|
|
bsr UpdateTextPos
|
| 1211 |
|
|
movec coreno,d2
|
| 1212 |
|
|
cmp.b IOFocus,d2
|
| 1213 |
|
|
bne.s .0001
|
| 1214 |
|
|
subi.w #2,d2 ; factor in location of screen in controller
|
| 1215 |
|
|
mulu #2048,d2 ; 2048 cells per screen
|
| 1216 |
|
|
add.w d2,d0
|
| 1217 |
|
|
rol.w #8,d0 ; swap byte order
|
| 1218 |
|
|
move.w d0,TEXTREG+$24
|
| 1219 |
|
|
.0001:
|
| 1220 |
|
|
movem.l (a7)+,d0/d2
|
| 1221 |
|
|
rts
|
| 1222 |
|
|
|
| 1223 |
|
|
;==============================================================================
|
| 1224 |
|
|
; TRAP #15 handler
|
| 1225 |
|
|
;
|
| 1226 |
|
|
; Parameters:
|
| 1227 |
|
|
; d0.w = function number to perform
|
| 1228 |
|
|
;==============================================================================
|
| 1229 |
|
|
|
| 1230 |
|
|
TRAP15:
|
| 1231 |
|
|
movem.l d0/a0,-(a7)
|
| 1232 |
|
|
lea T15DispatchTable,a0
|
| 1233 |
|
|
asl.l #2,d0
|
| 1234 |
|
|
move.l (a0,d0.w),a0
|
| 1235 |
|
|
jsr (a0)
|
| 1236 |
|
|
movem.l (a7)+,d0/a0
|
| 1237 |
|
|
rte
|
| 1238 |
|
|
|
| 1239 |
|
|
align 2
|
| 1240 |
|
|
T15DispatchTable:
|
| 1241 |
|
|
dc.l DisplayStringLimitedCRLF
|
| 1242 |
|
|
dc.l DisplayStringLimited
|
| 1243 |
|
|
dc.l StubRout
|
| 1244 |
|
|
dc.l StubRout
|
| 1245 |
|
|
dc.l StubRout
|
| 1246 |
|
|
dc.l GetKey
|
| 1247 |
|
|
dc.l DisplayChar
|
| 1248 |
|
|
dc.l CheckForKey
|
| 1249 |
|
|
dc.l StubRout
|
| 1250 |
|
|
dc.l StubRout
|
| 1251 |
|
|
; 10
|
| 1252 |
|
|
dc.l StubRout
|
| 1253 |
|
|
dc.l Cursor1
|
| 1254 |
|
|
dc.l SetKeyboardEcho
|
| 1255 |
|
|
dc.l DisplayStringCRLF
|
| 1256 |
|
|
dc.l DisplayString
|
| 1257 |
|
|
dc.l StubRout
|
| 1258 |
|
|
dc.l StubRout
|
| 1259 |
|
|
dc.l StubRout
|
| 1260 |
|
|
dc.l StubRout
|
| 1261 |
|
|
dc.l StubRout
|
| 1262 |
|
|
; 20
|
| 1263 |
|
|
dc.l StubRout
|
| 1264 |
|
|
dc.l StubRout
|
| 1265 |
|
|
dc.l StubRout
|
| 1266 |
|
|
dc.l StubRout
|
| 1267 |
|
|
dc.l StubRout
|
| 1268 |
|
|
dc.l StubRout
|
| 1269 |
|
|
dc.l StubRout
|
| 1270 |
|
|
dc.l StubRout
|
| 1271 |
|
|
dc.l StubRout
|
| 1272 |
|
|
dc.l StubRout
|
| 1273 |
|
|
; 30
|
| 1274 |
|
|
dc.l StubRout
|
| 1275 |
|
|
dc.l StubRout
|
| 1276 |
|
|
dc.l rotate_iofocus
|
| 1277 |
|
|
dc.l SerialPeekCharDirect
|
| 1278 |
|
|
dc.l SerialPutChar
|
| 1279 |
|
|
dc.l SerialPeekChar
|
| 1280 |
|
|
dc.l SerialGetChar
|
| 1281 |
|
|
dc.l T15LockSemaphore
|
| 1282 |
|
|
dc.l T15UnlockSemaphore
|
| 1283 |
7 |
robfinch |
dc.l prtflt
|
| 1284 |
2 |
robfinch |
|
| 1285 |
|
|
;------------------------------------------------------------------------------
|
| 1286 |
|
|
; Cursor positioning / Clear screen
|
| 1287 |
|
|
; - out of range settings are ignored
|
| 1288 |
|
|
;
|
| 1289 |
|
|
; Parameters:
|
| 1290 |
|
|
; d1.w cursor position, bits 0 to 7 are row, bits 8 to 15 are column.
|
| 1291 |
|
|
; Returns:
|
| 1292 |
|
|
; none
|
| 1293 |
|
|
;------------------------------------------------------------------------------
|
| 1294 |
|
|
|
| 1295 |
|
|
Cursor1:
|
| 1296 |
|
|
move.l d1,-(a7)
|
| 1297 |
|
|
cmpi.w #$FF00,d1
|
| 1298 |
|
|
bne.s .0002
|
| 1299 |
|
|
bsr clear_screen
|
| 1300 |
|
|
bra HomeCursor
|
| 1301 |
|
|
.0002:
|
| 1302 |
|
|
cmp.b TextRows,d1 ; if cursor pos out of range, ignore setting
|
| 1303 |
|
|
bhs.s .0003
|
| 1304 |
|
|
move.b d1,CursorRow
|
| 1305 |
|
|
.0003:
|
| 1306 |
|
|
ror.w #8,d1
|
| 1307 |
|
|
cmp.b TextCols,d1
|
| 1308 |
|
|
bhs.s .0001
|
| 1309 |
|
|
move.b d1,CursorCol
|
| 1310 |
|
|
.0001:
|
| 1311 |
|
|
bsr SyncCursor ; update hardware cursor
|
| 1312 |
|
|
move.l (a7)+,d1
|
| 1313 |
|
|
rts
|
| 1314 |
|
|
|
| 1315 |
|
|
;------------------------------------------------------------------------------
|
| 1316 |
|
|
; Stub routine for unimplemented functionality.
|
| 1317 |
|
|
;------------------------------------------------------------------------------
|
| 1318 |
|
|
|
| 1319 |
|
|
StubRout:
|
| 1320 |
|
|
rts
|
| 1321 |
|
|
|
| 1322 |
|
|
;------------------------------------------------------------------------------
|
| 1323 |
|
|
; Select a specific IO focus.
|
| 1324 |
|
|
;------------------------------------------------------------------------------
|
| 1325 |
|
|
|
| 1326 |
|
|
select_iofocus:
|
| 1327 |
|
|
cmpi.b #2,d1
|
| 1328 |
|
|
blo.s .0001
|
| 1329 |
|
|
cmpi.b #9,d1
|
| 1330 |
|
|
bhi.s .0001
|
| 1331 |
|
|
move.l d1,d0
|
| 1332 |
|
|
bra.s select_focus1
|
| 1333 |
|
|
.0001:
|
| 1334 |
|
|
rts
|
| 1335 |
|
|
|
| 1336 |
|
|
;------------------------------------------------------------------------------
|
| 1337 |
|
|
; Rotate the IO focus, done when ALT-Tab is pressed.
|
| 1338 |
|
|
;
|
| 1339 |
|
|
; Modifies:
|
| 1340 |
|
|
; d0, IOFocus BIOS variable
|
| 1341 |
|
|
;------------------------------------------------------------------------------
|
| 1342 |
|
|
|
| 1343 |
|
|
rotate_iofocus:
|
| 1344 |
|
|
move.b IOFocus,d0 ; d0 = focus, we can trash d0
|
| 1345 |
|
|
add.b #1,d0 ; increment the focus
|
| 1346 |
|
|
cmp.b #9,d0 ; limit to 2 to 9
|
| 1347 |
|
|
bls.s .0001
|
| 1348 |
|
|
move.b #2,d0
|
| 1349 |
|
|
.0001:
|
| 1350 |
|
|
select_focus1:
|
| 1351 |
|
|
move.b d0,IOFocus ; set IO focus
|
| 1352 |
|
|
subi.b #2,d0 ; screen is 0 to 7, focus is 2 to 9
|
| 1353 |
|
|
ext.w d0 ; make into long value
|
| 1354 |
|
|
mulu #2048,d0 ; * 2048 cells per screen
|
| 1355 |
|
|
rol.w #8,d0 ; swap byte order
|
| 1356 |
|
|
move.w d0,TEXTREG+$28 ; update screen address in text controller
|
| 1357 |
|
|
bra SyncCursor ; set cursor position
|
| 1358 |
|
|
|
| 1359 |
|
|
;==============================================================================
|
| 1360 |
|
|
; PLIC - platform level interrupt controller
|
| 1361 |
|
|
;
|
| 1362 |
|
|
; Register layout:
|
| 1363 |
|
|
; bits 0 to 7 = cause code to issue (vector number)
|
| 1364 |
|
|
; bits 8 to 11 = irq level to issue
|
| 1365 |
|
|
; bit 16 = irq enable
|
| 1366 |
|
|
; bit 17 = edge sensitivity
|
| 1367 |
|
|
; bit 18 = 0=vpa, 1=inta
|
| 1368 |
|
|
; bit 24 to 29 target core
|
| 1369 |
|
|
;
|
| 1370 |
|
|
; Note byte order must be reversed for PLIC.
|
| 1371 |
|
|
;==============================================================================
|
| 1372 |
|
|
|
| 1373 |
|
|
init_plic:
|
| 1374 |
|
|
lea PLIC,a0 ; a0 points to PLIC
|
| 1375 |
|
|
lea $80+4*29(a0),a1 ; point to timer registers (29)
|
| 1376 |
|
|
move.l #$0006033F,(a1) ; initialize, core=63,edge sensitive,enabled,irq6,vpa
|
| 1377 |
|
|
lea 4(a1),a1 ; point to keyboard registers (30)
|
| 1378 |
|
|
move.l #$3C060502,(a1) ; core=2,level sensitive,enabled,irq6,inta
|
| 1379 |
|
|
lea 4(a1),a1 ; point to nmi button register (31)
|
| 1380 |
|
|
move.l #$00070302,(a1) ; initialize, core=2,edge sensitive,enabled,irq7,vpa
|
| 1381 |
|
|
lea $80+4*16(a0),a1 ; a1 points to ACIA register
|
| 1382 |
|
|
move.l #$3D030502,(a1) ; core=2,level sensitive,enabled,irq3,inta
|
| 1383 |
|
|
lea $80+4*4(a0),a1 ; a1 points to io_bitmap irq
|
| 1384 |
|
|
move.l #$3B060702,(a1) ; core=2,edge sensitive,enabled,irq6,inta
|
| 1385 |
|
|
rts
|
| 1386 |
|
|
|
| 1387 |
|
|
;==============================================================================
|
| 1388 |
|
|
; Keyboard stuff
|
| 1389 |
|
|
;
|
| 1390 |
|
|
; KeyState2_
|
| 1391 |
|
|
; 876543210
|
| 1392 |
|
|
; ||||||||+ = shift
|
| 1393 |
|
|
; |||||||+- = alt
|
| 1394 |
|
|
; ||||||+-- = control
|
| 1395 |
|
|
; |||||+--- = numlock
|
| 1396 |
|
|
; ||||+---- = capslock
|
| 1397 |
|
|
; |||+----- = scrolllock
|
| 1398 |
|
|
; ||+------ =
|
| 1399 |
|
|
; |+------- =
|
| 1400 |
|
|
; +-------- = extended
|
| 1401 |
|
|
;
|
| 1402 |
|
|
;==============================================================================
|
| 1403 |
|
|
|
| 1404 |
|
|
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
| 1405 |
|
|
; Get ID - get the keyboards identifier code.
|
| 1406 |
|
|
;
|
| 1407 |
|
|
; Parameters: none
|
| 1408 |
|
|
; Returns: d = $AB83, $00 on fail
|
| 1409 |
|
|
; Modifies: d, KeybdID updated
|
| 1410 |
|
|
; Stack Space: 2 words
|
| 1411 |
|
|
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
| 1412 |
|
|
|
| 1413 |
|
|
KeybdGetID:
|
| 1414 |
|
|
move.w #$F2,d1
|
| 1415 |
|
|
bsr KeybdSendByte
|
| 1416 |
|
|
bsr KeybdWaitTx
|
| 1417 |
|
|
bsr KeybdRecvByte
|
| 1418 |
|
|
btst #7,d1
|
| 1419 |
|
|
bne kgnotKbd
|
| 1420 |
|
|
cmpi.b #$AB,d1
|
| 1421 |
|
|
bne kgnotKbd
|
| 1422 |
|
|
bsr KeybdRecvByte
|
| 1423 |
|
|
btst #7,d1
|
| 1424 |
|
|
bne kgnotKbd
|
| 1425 |
|
|
cmpi.b #$83,d1
|
| 1426 |
|
|
bne kgnotKbd
|
| 1427 |
|
|
move.l #$AB83,d1
|
| 1428 |
|
|
kgid1:
|
| 1429 |
|
|
move.w d1,KeybdID
|
| 1430 |
|
|
rts
|
| 1431 |
|
|
kgnotKbd:
|
| 1432 |
|
|
moveq #0,d1
|
| 1433 |
|
|
bra kgid1
|
| 1434 |
|
|
|
| 1435 |
|
|
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
| 1436 |
|
|
; Set the LEDs on the keyboard.
|
| 1437 |
|
|
;
|
| 1438 |
|
|
; Parameters:
|
| 1439 |
|
|
; d1.b = LED state
|
| 1440 |
|
|
; Modifies:
|
| 1441 |
|
|
; none
|
| 1442 |
|
|
; Returns:
|
| 1443 |
|
|
; none
|
| 1444 |
|
|
; Stack Space:
|
| 1445 |
|
|
; 1 long word
|
| 1446 |
|
|
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
| 1447 |
|
|
|
| 1448 |
|
|
KeybdSetLED:
|
| 1449 |
|
|
move.l d1,-(a7)
|
| 1450 |
|
|
move.b #$ED,d1
|
| 1451 |
|
|
bsr KeybdSendByte
|
| 1452 |
|
|
bsr KeybdWaitTx
|
| 1453 |
|
|
bsr KeybdRecvByte
|
| 1454 |
|
|
tst.b d1
|
| 1455 |
|
|
bmi .0001
|
| 1456 |
|
|
cmpi.b #$FA,d1
|
| 1457 |
|
|
move.l (a7),d1
|
| 1458 |
|
|
bsr KeybdSendByte
|
| 1459 |
|
|
bsr KeybdWaitTx
|
| 1460 |
|
|
bsr KeybdRecvByte
|
| 1461 |
|
|
.0001:
|
| 1462 |
|
|
move.l (a7)+,d1
|
| 1463 |
|
|
rts
|
| 1464 |
|
|
|
| 1465 |
|
|
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
| 1466 |
|
|
; Initialize the keyboard.
|
| 1467 |
|
|
;
|
| 1468 |
|
|
; Parameters:
|
| 1469 |
|
|
; none
|
| 1470 |
|
|
; Modifies:
|
| 1471 |
|
|
; none
|
| 1472 |
|
|
; Returns:
|
| 1473 |
|
|
; none
|
| 1474 |
|
|
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
| 1475 |
|
|
|
| 1476 |
|
|
_KeybdInit:
|
| 1477 |
|
|
KeybdInit:
|
| 1478 |
|
|
; movem.l d0/d1/d3/a1,-(a7)
|
| 1479 |
|
|
clr.b _KeyState1 ; records key up/down state
|
| 1480 |
|
|
clr.b _KeyState2 ; records shift,ctrl,alt state
|
| 1481 |
|
|
rts
|
| 1482 |
|
|
|
| 1483 |
|
|
bsr Wait300ms
|
| 1484 |
|
|
bsr _KeybdGetStatus ; wait for response from keyboard
|
| 1485 |
|
|
tst.b d1
|
| 1486 |
|
|
bpl .0001 ; is input buffer full ? no, branch
|
| 1487 |
|
|
bsr _KeybdGetScancode
|
| 1488 |
|
|
cmpi.b #$AA,d1 ; keyboard Okay
|
| 1489 |
|
|
beq kbdi0005
|
| 1490 |
|
|
.0001:
|
| 1491 |
|
|
moveq #10,d3
|
| 1492 |
|
|
kbdi0002:
|
| 1493 |
|
|
bsr Wait10ms
|
| 1494 |
|
|
clr.b KEYBD+1 ; clear receive register (write $00 to status reg)
|
| 1495 |
|
|
moveq #-1,d1 ; send reset code to keyboard
|
| 1496 |
|
|
move.b d1,KEYBD+1 ; write $FF to status reg to clear TX state
|
| 1497 |
|
|
bsr KeybdSendByte ; now write ($FF) to transmit register for reset
|
| 1498 |
|
|
bsr KeybdWaitTx ; wait until no longer busy
|
| 1499 |
|
|
tst.l d1
|
| 1500 |
|
|
bmi kbdiXmitBusy
|
| 1501 |
|
|
bsr KeybdRecvByte ; look for an ACK ($FA)
|
| 1502 |
|
|
cmpi.b #$FA,d1
|
| 1503 |
|
|
bne .0001
|
| 1504 |
|
|
bsr KeybdRecvByte ; look for BAT completion code ($AA)
|
| 1505 |
|
|
.0001:
|
| 1506 |
|
|
cmpi.b #$FC,d1 ; reset error ?
|
| 1507 |
|
|
beq kbdiTryAgain
|
| 1508 |
|
|
cmpi.b #$AA,d1 ; reset complete okay ?
|
| 1509 |
|
|
bne kbdiTryAgain
|
| 1510 |
|
|
|
| 1511 |
|
|
; After a reset, scan code set #2 should be active
|
| 1512 |
|
|
.config:
|
| 1513 |
|
|
move.w #$F0,d1 ; send scan code select
|
| 1514 |
|
|
move.b d1,leds
|
| 1515 |
|
|
bsr KeybdSendByte
|
| 1516 |
|
|
bsr KeybdWaitTx
|
| 1517 |
|
|
tst.l d1
|
| 1518 |
|
|
bmi kbdiXmitBusy
|
| 1519 |
|
|
bsr KeybdRecvByte ; wait for response from keyboard
|
| 1520 |
|
|
tst.w d1
|
| 1521 |
|
|
bmi kbdiTryAgain
|
| 1522 |
|
|
cmpi.b #$FA,d1 ; ACK
|
| 1523 |
|
|
beq kbdi0004
|
| 1524 |
|
|
kbdiTryAgain:
|
| 1525 |
|
|
dbra d3,kbdi0002
|
| 1526 |
|
|
.keybdErr:
|
| 1527 |
|
|
lea msgBadKeybd,a1
|
| 1528 |
|
|
bsr DisplayStringCRLF
|
| 1529 |
|
|
bra ledxit
|
| 1530 |
|
|
kbdi0004:
|
| 1531 |
|
|
moveq #2,d1 ; select scan code set #2
|
| 1532 |
|
|
bsr KeybdSendByte
|
| 1533 |
|
|
bsr KeybdWaitTx
|
| 1534 |
|
|
tst.l d1
|
| 1535 |
|
|
bmi kbdiXmitBusy
|
| 1536 |
|
|
bsr KeybdRecvByte ; wait for response from keyboard
|
| 1537 |
|
|
tst.w d1
|
| 1538 |
|
|
bmi kbdiTryAgain
|
| 1539 |
|
|
cmpi.b #$FA,d1
|
| 1540 |
|
|
bne kbdiTryAgain
|
| 1541 |
|
|
kbdi0005:
|
| 1542 |
|
|
bsr KeybdGetID
|
| 1543 |
|
|
ledxit:
|
| 1544 |
|
|
moveq #$07,d1
|
| 1545 |
|
|
bsr KeybdSetLED
|
| 1546 |
|
|
bsr Wait300ms
|
| 1547 |
|
|
moveq #$00,d1
|
| 1548 |
|
|
bsr KeybdSetLED
|
| 1549 |
|
|
movem.l (a7)+,d0/d1/d3/a1
|
| 1550 |
|
|
rts
|
| 1551 |
|
|
kbdiXmitBusy:
|
| 1552 |
|
|
lea msgXmitBusy,a1
|
| 1553 |
|
|
bsr DisplayStringCRLF
|
| 1554 |
|
|
movem.l (a7)+,d0/d1/d3/a1
|
| 1555 |
|
|
rts
|
| 1556 |
|
|
|
| 1557 |
|
|
msgBadKeybd:
|
| 1558 |
|
|
dc.b "Keyboard error",0
|
| 1559 |
|
|
msgXmitBusy:
|
| 1560 |
|
|
dc.b "Keyboard transmitter stuck",0
|
| 1561 |
|
|
|
| 1562 |
|
|
even
|
| 1563 |
|
|
_KeybdGetStatus:
|
| 1564 |
|
|
moveq #0,d1
|
| 1565 |
|
|
move.b KEYBD+1,d1
|
| 1566 |
|
|
rts
|
| 1567 |
|
|
|
| 1568 |
|
|
; Get the scancode from the keyboard port
|
| 1569 |
|
|
|
| 1570 |
|
|
_KeybdGetScancode:
|
| 1571 |
|
|
moveq #0,d1
|
| 1572 |
|
|
move.b KEYBD,d1 ; get the scan code
|
| 1573 |
|
|
move.b #0,KEYBD+1 ; clear receive register
|
| 1574 |
|
|
rts
|
| 1575 |
|
|
|
| 1576 |
|
|
; Recieve a byte from the keyboard, used after a command is sent to the
|
| 1577 |
|
|
; keyboard in order to wait for a response.
|
| 1578 |
|
|
;
|
| 1579 |
|
|
KeybdRecvByte:
|
| 1580 |
|
|
move.l d3,-(a7)
|
| 1581 |
|
|
move.w #100,d3 ; wait up to 1s
|
| 1582 |
|
|
.0003:
|
| 1583 |
|
|
bsr _KeybdGetStatus ; wait for response from keyboard
|
| 1584 |
|
|
tst.b d1
|
| 1585 |
|
|
bmi .0004 ; is input buffer full ? yes, branch
|
| 1586 |
|
|
bsr Wait10ms ; wait a bit
|
| 1587 |
|
|
dbra d3,.0003 ; go back and try again
|
| 1588 |
|
|
move.l (a7)+,d3
|
| 1589 |
|
|
moveq #-1,d1 ; return -1
|
| 1590 |
|
|
rts
|
| 1591 |
|
|
.0004:
|
| 1592 |
|
|
bsr _KeybdGetScancode
|
| 1593 |
|
|
move.l (a7)+,d3
|
| 1594 |
|
|
rts
|
| 1595 |
|
|
|
| 1596 |
|
|
|
| 1597 |
|
|
; Wait until the keyboard transmit is complete
|
| 1598 |
|
|
; Returns -1 if timedout, 0 if transmit completed
|
| 1599 |
|
|
;
|
| 1600 |
|
|
KeybdWaitTx:
|
| 1601 |
|
|
movem.l d2/d3,-(a7)
|
| 1602 |
|
|
moveq #100,d3 ; wait a max of 1s
|
| 1603 |
|
|
.0001:
|
| 1604 |
|
|
bsr _KeybdGetStatus
|
| 1605 |
|
|
btst #6,d1 ; check for transmit complete bit
|
| 1606 |
|
|
bne .0002 ; branch if bit set
|
| 1607 |
|
|
bsr Wait10ms ; delay a little bit
|
| 1608 |
|
|
dbra d3,.0001 ; go back and try again
|
| 1609 |
|
|
movem.l (a7)+,d2/d3
|
| 1610 |
|
|
moveq #-1,d1 ; return -1
|
| 1611 |
|
|
rts
|
| 1612 |
|
|
.0002:
|
| 1613 |
|
|
movem.l (a7)+,d2/d3
|
| 1614 |
|
|
moveq #0,d1 ; return 0
|
| 1615 |
|
|
rts
|
| 1616 |
|
|
|
| 1617 |
|
|
;------------------------------------------------------------------------------
|
| 1618 |
|
|
; d1.b 0=echo off, non-zero = echo on
|
| 1619 |
|
|
;------------------------------------------------------------------------------
|
| 1620 |
|
|
|
| 1621 |
|
|
SetKeyboardEcho:
|
| 1622 |
|
|
move.b d1,KeybdEcho
|
| 1623 |
|
|
rts
|
| 1624 |
|
|
|
| 1625 |
|
|
;------------------------------------------------------------------------------
|
| 1626 |
|
|
; Get key pending status into d1.b
|
| 1627 |
|
|
;
|
| 1628 |
|
|
; Returns:
|
| 1629 |
|
|
; d1.b = 1 if a key is available, otherwise zero.
|
| 1630 |
|
|
;------------------------------------------------------------------------------
|
| 1631 |
|
|
|
| 1632 |
|
|
CheckForKey:
|
| 1633 |
|
|
moveq.l #0,d1 ; clear high order bits
|
| 1634 |
|
|
; move.b KEYBD+1,d1 ; get keyboard port status
|
| 1635 |
|
|
; smi.b d1 ; set true/false
|
| 1636 |
|
|
; andi.b #1,d1 ; return true (1) if key available, 0 otherwise
|
| 1637 |
|
|
tst.b _KeybdCnt
|
| 1638 |
|
|
sne.b d1
|
| 1639 |
|
|
rts
|
| 1640 |
|
|
|
| 1641 |
|
|
;------------------------------------------------------------------------------
|
| 1642 |
|
|
; GetKey
|
| 1643 |
|
|
; Get a character from the keyboard.
|
| 1644 |
|
|
;
|
| 1645 |
|
|
; Modifies:
|
| 1646 |
|
|
; d1
|
| 1647 |
|
|
; Returns:
|
| 1648 |
|
|
; d1 = -1 if no key available or not in focus, otherwise key
|
| 1649 |
|
|
;------------------------------------------------------------------------------
|
| 1650 |
|
|
|
| 1651 |
|
|
GetKey:
|
| 1652 |
|
|
move.l d0,-(a7) ; push d0
|
| 1653 |
|
|
move.b IOFocus,d1 ; Check if the core has the IO focus
|
| 1654 |
|
|
movec.l coreno,d0
|
| 1655 |
|
|
cmp.b d0,d1
|
| 1656 |
|
|
bne.s .0004 ; go return no key available, if not in focus
|
| 1657 |
|
|
bsr KeybdGetCharNoWait ; get a character
|
| 1658 |
|
|
tst.l d1 ; was a key available?
|
| 1659 |
|
|
bmi.s .0004
|
| 1660 |
|
|
tst.b KeybdEcho ; is keyboard echo on ?
|
| 1661 |
|
|
beq.s .0003 ; no echo, just return the key
|
| 1662 |
|
|
cmpi.b #CR,d1 ; convert CR keystroke into CRLF
|
| 1663 |
|
|
bne.s .0005
|
| 1664 |
|
|
bsr CRLF
|
| 1665 |
|
|
bra.s .0003
|
| 1666 |
|
|
.0005:
|
| 1667 |
|
|
bsr DisplayChar
|
| 1668 |
|
|
.0003:
|
| 1669 |
|
|
move.l (a7)+,d0 ; pop d0
|
| 1670 |
|
|
rts ; return key
|
| 1671 |
|
|
; Return -1 indicating no char was available
|
| 1672 |
|
|
.0004:
|
| 1673 |
|
|
move.l (a7)+,d0 ; pop d0
|
| 1674 |
|
|
moveq #-1,d1 ; return no key available
|
| 1675 |
|
|
rts
|
| 1676 |
|
|
|
| 1677 |
|
|
CheckForCtrlC:
|
| 1678 |
|
|
bsr KeybdGetCharNoWait
|
| 1679 |
|
|
cmpi.b #CTRLC,d1
|
| 1680 |
|
|
beq Monitor
|
| 1681 |
|
|
rts
|
| 1682 |
|
|
|
| 1683 |
|
|
;------------------------------------------------------------------------------
|
| 1684 |
|
|
;------------------------------------------------------------------------------
|
| 1685 |
|
|
|
| 1686 |
|
|
KeybdGetCharNoWait:
|
| 1687 |
|
|
clr.b KeybdWaitFlag
|
| 1688 |
|
|
bra KeybdGetChar
|
| 1689 |
|
|
|
| 1690 |
|
|
KeybdGetCharWait:
|
| 1691 |
|
|
move.b #-1,KeybdWaitFlag
|
| 1692 |
|
|
|
| 1693 |
|
|
KeybdGetChar:
|
| 1694 |
|
|
movem.l d0/d2/d3/a0,-(a7)
|
| 1695 |
|
|
.0003:
|
| 1696 |
|
|
movec coreno,d0
|
| 1697 |
|
|
swap d0
|
| 1698 |
|
|
moveq #KEYBD_SEMA,d1
|
| 1699 |
|
|
bsr LockSemaphore
|
| 1700 |
|
|
move.b _KeybdCnt,d2 ; get count of buffered scan codes
|
| 1701 |
|
|
beq.s .0015 ;
|
| 1702 |
|
|
move.b _KeybdHead,d2 ; d2 = buffer head
|
| 1703 |
|
|
ext.w d2
|
| 1704 |
|
|
lea _KeybdBuf,a0 ; a0 = pointer to keyboard buffer
|
| 1705 |
|
|
clr.l d1
|
| 1706 |
|
|
move.b (a0,d2.w),d1 ; d1 = scan code from buffer
|
| 1707 |
|
|
addi.b #1,d2 ; increment keyboard head index
|
| 1708 |
|
|
andi.b #31,d2 ; and wrap around at buffer size
|
| 1709 |
|
|
move.b d2,_KeybdHead
|
| 1710 |
|
|
subi.b #1,_KeybdCnt ; decrement count of scan codes in buffer
|
| 1711 |
|
|
exg d1,d2 ; save scancode value in d2
|
| 1712 |
|
|
movec coreno,d0
|
| 1713 |
|
|
swap d0
|
| 1714 |
|
|
moveq #KEYBD_SEMA,d1
|
| 1715 |
|
|
bsr UnlockSemaphore
|
| 1716 |
|
|
exg d2,d1 ; restore scancode value
|
| 1717 |
|
|
bra .0001 ; go process scan code
|
| 1718 |
|
|
.0014:
|
| 1719 |
|
|
bsr _KeybdGetStatus ; check keyboard status for key available
|
| 1720 |
|
|
bmi .0006 ; yes, go process
|
| 1721 |
|
|
.0015:
|
| 1722 |
|
|
movec coreno,d0
|
| 1723 |
|
|
swap d0
|
| 1724 |
|
|
moveq #KEYBD_SEMA,d1
|
| 1725 |
|
|
bsr UnlockSemaphore
|
| 1726 |
|
|
tst.b KeybdWaitFlag ; are we willing to wait for a key ?
|
| 1727 |
|
|
bmi .0003 ; yes, branch back
|
| 1728 |
|
|
movem.l (a7)+,d0/d2/d3/a0
|
| 1729 |
|
|
moveq #-1,d1 ; flag no char available
|
| 1730 |
|
|
rts
|
| 1731 |
|
|
.0006:
|
| 1732 |
|
|
bsr _KeybdGetScancode
|
| 1733 |
|
|
.0001:
|
| 1734 |
|
|
move.w #1,leds
|
| 1735 |
|
|
cmp.b #SC_KEYUP,d1
|
| 1736 |
|
|
beq .doKeyup
|
| 1737 |
|
|
cmp.b #SC_EXTEND,d1
|
| 1738 |
|
|
beq .doExtend
|
| 1739 |
|
|
cmp.b #SC_CTRL,d1
|
| 1740 |
|
|
beq .doCtrl
|
| 1741 |
|
|
cmp.b #SC_LSHIFT,d1
|
| 1742 |
|
|
beq .doShift
|
| 1743 |
|
|
cmp.b #SC_RSHIFT,d1
|
| 1744 |
|
|
beq .doShift
|
| 1745 |
|
|
cmp.b #SC_NUMLOCK,d1
|
| 1746 |
|
|
beq .doNumLock
|
| 1747 |
|
|
cmp.b #SC_CAPSLOCK,d1
|
| 1748 |
|
|
beq .doCapsLock
|
| 1749 |
|
|
cmp.b #SC_SCROLLLOCK,d1
|
| 1750 |
|
|
beq .doScrollLock
|
| 1751 |
|
|
cmp.b #SC_ALT,d1
|
| 1752 |
|
|
beq .doAlt
|
| 1753 |
|
|
move.b _KeyState1,d2 ; check key up/down
|
| 1754 |
|
|
move.b #0,_KeyState1 ; clear keyup status
|
| 1755 |
|
|
tst.b d2
|
| 1756 |
|
|
bne .0003 ; ignore key up
|
| 1757 |
|
|
cmp.b #SC_TAB,d1
|
| 1758 |
|
|
beq .doTab
|
| 1759 |
|
|
.0013:
|
| 1760 |
|
|
move.b _KeyState2,d2
|
| 1761 |
|
|
bpl .0010 ; is it extended code ?
|
| 1762 |
|
|
and.b #$7F,d2 ; clear extended bit
|
| 1763 |
|
|
move.b d2,_KeyState2
|
| 1764 |
|
|
move.b #0,_KeyState1 ; clear keyup
|
| 1765 |
|
|
lea _keybdExtendedCodes,a0
|
| 1766 |
|
|
move.b (a0,d1.w),d1
|
| 1767 |
|
|
bra .0008
|
| 1768 |
|
|
.0010:
|
| 1769 |
|
|
btst #2,d2 ; is it CTRL code ?
|
| 1770 |
|
|
beq .0009
|
| 1771 |
|
|
and.w #$7F,d1
|
| 1772 |
|
|
lea _keybdControlCodes,a0
|
| 1773 |
|
|
move.b (a0,d1.w),d1
|
| 1774 |
|
|
bra .0008
|
| 1775 |
|
|
.0009:
|
| 1776 |
|
|
btst #0,d2 ; is it shift down ?
|
| 1777 |
|
|
beq .0007
|
| 1778 |
|
|
lea _shiftedScanCodes,a0
|
| 1779 |
|
|
move.b (a0,d1.w),d1
|
| 1780 |
|
|
bra .0008
|
| 1781 |
|
|
.0007:
|
| 1782 |
|
|
lea _unshiftedScanCodes,a0
|
| 1783 |
|
|
move.b (a0,d1.w),d1
|
| 1784 |
|
|
move.w #$0202,leds
|
| 1785 |
|
|
.0008:
|
| 1786 |
|
|
move.w #$0303,leds
|
| 1787 |
|
|
movem.l (a7)+,d0/d2/d3/a0
|
| 1788 |
|
|
rts
|
| 1789 |
|
|
.doKeyup:
|
| 1790 |
|
|
move.b #-1,_KeyState1
|
| 1791 |
|
|
bra .0003
|
| 1792 |
|
|
.doExtend:
|
| 1793 |
|
|
or.b #$80,_KeyState2
|
| 1794 |
|
|
bra .0003
|
| 1795 |
|
|
.doCtrl:
|
| 1796 |
|
|
move.b _KeyState1,d1
|
| 1797 |
|
|
clr.b _KeyState1
|
| 1798 |
|
|
tst.b d1
|
| 1799 |
|
|
bpl.s .0004
|
| 1800 |
|
|
bclr #2,_KeyState2
|
| 1801 |
|
|
bra .0003
|
| 1802 |
|
|
.0004:
|
| 1803 |
|
|
bset #2,_KeyState2
|
| 1804 |
|
|
bra .0003
|
| 1805 |
|
|
.doAlt:
|
| 1806 |
|
|
move.b _KeyState1,d1
|
| 1807 |
|
|
clr.b _KeyState1
|
| 1808 |
|
|
tst.b d1
|
| 1809 |
|
|
bpl .0011
|
| 1810 |
|
|
bclr #1,_KeyState2
|
| 1811 |
|
|
bra .0003
|
| 1812 |
|
|
.0011:
|
| 1813 |
|
|
bset #1,_KeyState2
|
| 1814 |
|
|
bra .0003
|
| 1815 |
|
|
.doTab:
|
| 1816 |
|
|
move.l d1,-(a7)
|
| 1817 |
|
|
move.b _KeyState2,d1
|
| 1818 |
|
|
btst #1,d1 ; is ALT down ?
|
| 1819 |
|
|
beq .0012
|
| 1820 |
|
|
; inc _iof_switch
|
| 1821 |
|
|
move.l (a7)+,d1
|
| 1822 |
|
|
bra .0003
|
| 1823 |
|
|
.0012:
|
| 1824 |
|
|
move.l (a7)+,d1
|
| 1825 |
|
|
bra .0013
|
| 1826 |
|
|
.doShift:
|
| 1827 |
|
|
move.b _KeyState1,d1
|
| 1828 |
|
|
clr.b _KeyState1
|
| 1829 |
|
|
tst.b d1
|
| 1830 |
|
|
bpl.s .0005
|
| 1831 |
|
|
bclr #0,_KeyState2
|
| 1832 |
|
|
bra .0003
|
| 1833 |
|
|
.0005:
|
| 1834 |
|
|
bset #0,_KeyState2
|
| 1835 |
|
|
bra .0003
|
| 1836 |
|
|
.doNumLock:
|
| 1837 |
|
|
bchg #4,_KeyState2
|
| 1838 |
|
|
bsr KeybdSetLEDStatus
|
| 1839 |
|
|
bra .0003
|
| 1840 |
|
|
.doCapsLock:
|
| 1841 |
|
|
bchg #5,_KeyState2
|
| 1842 |
|
|
bsr KeybdSetLEDStatus
|
| 1843 |
|
|
bra .0003
|
| 1844 |
|
|
.doScrollLock:
|
| 1845 |
|
|
bchg #6,_KeyState2
|
| 1846 |
|
|
bsr KeybdSetLEDStatus
|
| 1847 |
|
|
bra .0003
|
| 1848 |
|
|
|
| 1849 |
|
|
KeybdSetLEDStatus:
|
| 1850 |
|
|
movem.l d2/d3,-(a7)
|
| 1851 |
|
|
clr.b KeybdLEDs
|
| 1852 |
|
|
btst #4,_KeyState2
|
| 1853 |
|
|
beq.s .0002
|
| 1854 |
|
|
move.b #2,KeybdLEDs
|
| 1855 |
|
|
.0002:
|
| 1856 |
|
|
btst #5,_KeyState2
|
| 1857 |
|
|
beq.s .0003
|
| 1858 |
|
|
bset #2,KeybdLEDs
|
| 1859 |
|
|
.0003:
|
| 1860 |
|
|
btst #6,_KeyState2
|
| 1861 |
|
|
beq.s .0004
|
| 1862 |
|
|
bset #0,KeybdLEDs
|
| 1863 |
|
|
.0004:
|
| 1864 |
|
|
move.b KeybdLEDs,d1
|
| 1865 |
|
|
bsr KeybdSetLED
|
| 1866 |
|
|
movem.l (a7)+,d2/d3
|
| 1867 |
|
|
rts
|
| 1868 |
|
|
|
| 1869 |
|
|
KeybdSendByte:
|
| 1870 |
|
|
move.b d1,KEYBD
|
| 1871 |
|
|
rts
|
| 1872 |
|
|
|
| 1873 |
|
|
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
| 1874 |
|
|
; Wait for 10 ms
|
| 1875 |
|
|
;
|
| 1876 |
|
|
; Parameters: none
|
| 1877 |
|
|
; Returns: none
|
| 1878 |
|
|
; Modifies: none
|
| 1879 |
|
|
; Stack Space: 2 long words
|
| 1880 |
|
|
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
| 1881 |
|
|
|
| 1882 |
|
|
Wait10ms:
|
| 1883 |
|
|
movem.l d0/d1,-(a7)
|
| 1884 |
|
|
movec tick,d0
|
| 1885 |
|
|
addi.l #400000,d0 ; 400,000 cycles at 40MHz
|
| 1886 |
|
|
.0001:
|
| 1887 |
|
|
movec tick,d1
|
| 1888 |
|
|
cmp.l d1,d0
|
| 1889 |
|
|
bhi .0001
|
| 1890 |
|
|
movem.l (a7)+,d0/d1
|
| 1891 |
|
|
rts
|
| 1892 |
|
|
|
| 1893 |
|
|
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
| 1894 |
|
|
; Wait for 300 ms
|
| 1895 |
|
|
;
|
| 1896 |
|
|
; Parameters: none
|
| 1897 |
|
|
; Returns: none
|
| 1898 |
|
|
; Modifies: none
|
| 1899 |
|
|
; Stack Space: 2 long words
|
| 1900 |
|
|
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
| 1901 |
|
|
|
| 1902 |
|
|
Wait300ms:
|
| 1903 |
|
|
movem.l d0/d1,-(a7)
|
| 1904 |
|
|
movec tick,d0
|
| 1905 |
|
|
addi.l #12000000,d0 ; 12,000,000 cycles at 40MHz
|
| 1906 |
|
|
.0001:
|
| 1907 |
|
|
movec tick,d1
|
| 1908 |
|
|
cmp.l d1,d0
|
| 1909 |
|
|
bhi .0001
|
| 1910 |
|
|
movem.l (a7)+,d0/d1
|
| 1911 |
|
|
rts
|
| 1912 |
|
|
|
| 1913 |
|
|
;--------------------------------------------------------------------------
|
| 1914 |
|
|
; Keyboard IRQ routine.
|
| 1915 |
|
|
;
|
| 1916 |
|
|
; Returns:
|
| 1917 |
|
|
; d1 = -1 if keyboard routine handled interrupt, otherwise positive.
|
| 1918 |
|
|
;--------------------------------------------------------------------------
|
| 1919 |
|
|
|
| 1920 |
|
|
KeybdIRQ:
|
| 1921 |
|
|
move.w #$2600,sr ; disable lower interrupts
|
| 1922 |
|
|
movem.l d0/d1/a0,-(a7)
|
| 1923 |
|
|
bsr _KeybdGetStatus ; check if keyboard
|
| 1924 |
|
|
tst.b d1
|
| 1925 |
|
|
bpl .0001 ; branch if not keyboard
|
| 1926 |
|
|
movec coreno,d0
|
| 1927 |
|
|
swap d0
|
| 1928 |
|
|
moveq #KEYBD_SEMA,d1
|
| 1929 |
|
|
bsr LockSemaphore
|
| 1930 |
|
|
btst #1,_KeyState2 ; Is Alt down?
|
| 1931 |
|
|
beq.s .0003
|
| 1932 |
|
|
move.b KEYBD,d0 ; get scan code
|
| 1933 |
|
|
cmpi.b #SC_TAB,d0 ; is Alt-Tab?
|
| 1934 |
|
|
bne.s .0003
|
| 1935 |
|
|
bsr _KeybdGetScancode ; grab the scan code (clears interrupt)
|
| 1936 |
|
|
bsr rotate_iofocus
|
| 1937 |
|
|
clr.b _KeybdHead ; clear keyboard buffer
|
| 1938 |
|
|
clr.b _KeybdTail
|
| 1939 |
|
|
clr.b _KeybdCnt
|
| 1940 |
|
|
bra .0002 ; do not store Alt-Tab
|
| 1941 |
|
|
.0003:
|
| 1942 |
|
|
; Insert keyboard scan code into raw keyboard buffer
|
| 1943 |
|
|
bsr _KeybdGetScancode ; grab the scan code (clears interrupt)
|
| 1944 |
|
|
cmpi.b #32,_KeybdCnt ; see if keyboard buffer full
|
| 1945 |
|
|
bhs.s .0002
|
| 1946 |
|
|
move.b _KeybdTail,d0 ; keyboard buffer not full, add to tail
|
| 1947 |
|
|
ext.w d0
|
| 1948 |
|
|
lea _KeybdBuf,a0 ; a0 = pointer to buffer
|
| 1949 |
|
|
move.b d1,(a0,d0.w) ; put scancode in buffer
|
| 1950 |
|
|
addi.b #1,d0 ; increment tail index
|
| 1951 |
|
|
andi.b #31,d0 ; wrap at buffer limit
|
| 1952 |
|
|
move.b d0,_KeybdTail ; update tail index
|
| 1953 |
|
|
addi.b #1,_KeybdCnt ; increment buffer count
|
| 1954 |
|
|
.0002:
|
| 1955 |
|
|
movec coreno,d0
|
| 1956 |
|
|
swap d0
|
| 1957 |
|
|
moveq #KEYBD_SEMA,d1
|
| 1958 |
|
|
bsr UnlockSemaphore
|
| 1959 |
|
|
.0001:
|
| 1960 |
|
|
movem.l (a7)+,d0/d1/a0 ; return
|
| 1961 |
|
|
rte
|
| 1962 |
|
|
|
| 1963 |
|
|
;--------------------------------------------------------------------------
|
| 1964 |
|
|
; PS2 scan codes to ascii conversion tables.
|
| 1965 |
|
|
;--------------------------------------------------------------------------
|
| 1966 |
|
|
;
|
| 1967 |
|
|
_unshiftedScanCodes:
|
| 1968 |
|
|
dc.b $2e,$a9,$2e,$a5,$a3,$a1,$a2,$ac
|
| 1969 |
|
|
dc.b $2e,$aa,$a8,$a6,$a4,$09,$60,$2e
|
| 1970 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$71,$31,$2e
|
| 1971 |
|
|
dc.b $2e,$2e,$7a,$73,$61,$77,$32,$2e
|
| 1972 |
|
|
dc.b $2e,$63,$78,$64,$65,$34,$33,$2e
|
| 1973 |
|
|
dc.b $2e,$20,$76,$66,$74,$72,$35,$2e
|
| 1974 |
|
|
dc.b $2e,$6e,$62,$68,$67,$79,$36,$2e
|
| 1975 |
|
|
dc.b $2e,$2e,$6d,$6a,$75,$37,$38,$2e
|
| 1976 |
|
|
dc.b $2e,$2c,$6b,$69,$6f,$30,$39,$2e
|
| 1977 |
|
|
dc.b $2e,$2e,$2f,$6c,$3b,$70,$2d,$2e
|
| 1978 |
|
|
dc.b $2e,$2e,$27,$2e,$5b,$3d,$2e,$2e
|
| 1979 |
|
|
dc.b $ad,$2e,$0d,$5d,$2e,$5c,$2e,$2e
|
| 1980 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$08,$2e
|
| 1981 |
|
|
dc.b $2e,$95,$2e,$93,$94,$2e,$2e,$2e
|
| 1982 |
|
|
dc.b $98,$7f,$92,$2e,$91,$90,$1b,$af
|
| 1983 |
|
|
dc.b $ab,$2e,$97,$2e,$2e,$96,$ae,$2e
|
| 1984 |
|
|
|
| 1985 |
|
|
dc.b $2e,$2e,$2e,$a7,$2e,$2e,$2e,$2e
|
| 1986 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 1987 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 1988 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 1989 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 1990 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 1991 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 1992 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 1993 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 1994 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 1995 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 1996 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 1997 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 1998 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 1999 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2000 |
|
|
dc.b $2e,$2e,$fa,$2e,$2e,$2e,$2e,$2e
|
| 2001 |
|
|
|
| 2002 |
|
|
_shiftedScanCodes:
|
| 2003 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2004 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$09,$7e,$2e
|
| 2005 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$51,$21,$2e
|
| 2006 |
|
|
dc.b $2e,$2e,$5a,$53,$41,$57,$40,$2e
|
| 2007 |
|
|
dc.b $2e,$43,$58,$44,$45,$24,$23,$2e
|
| 2008 |
|
|
dc.b $2e,$20,$56,$46,$54,$52,$25,$2e
|
| 2009 |
|
|
dc.b $2e,$4e,$42,$48,$47,$59,$5e,$2e
|
| 2010 |
|
|
dc.b $2e,$2e,$4d,$4a,$55,$26,$2a,$2e
|
| 2011 |
|
|
dc.b $2e,$3c,$4b,$49,$4f,$29,$28,$2e
|
| 2012 |
|
|
dc.b $2e,$3e,$3f,$4c,$3a,$50,$5f,$2e
|
| 2013 |
|
|
dc.b $2e,$2e,$22,$2e,$7b,$2b,$2e,$2e
|
| 2014 |
|
|
dc.b $2e,$2e,$0d,$7d,$2e,$7c,$2e,$2e
|
| 2015 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$08,$2e
|
| 2016 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2017 |
|
|
dc.b $2e,$7f,$2e,$2e,$2e,$2e,$1b,$2e
|
| 2018 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2019 |
|
|
|
| 2020 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2021 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2022 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2023 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2024 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2025 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2026 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2027 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2028 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2029 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2030 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2031 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2032 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2033 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2034 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2035 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2036 |
|
|
|
| 2037 |
|
|
; control
|
| 2038 |
|
|
_keybdControlCodes:
|
| 2039 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2040 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$09,$7e,$2e
|
| 2041 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$11,$21,$2e
|
| 2042 |
|
|
dc.b $2e,$2e,$1a,$13,$01,$17,$40,$2e
|
| 2043 |
|
|
dc.b $2e,$03,$18,$04,$05,$24,$23,$2e
|
| 2044 |
|
|
dc.b $2e,$20,$16,$06,$14,$12,$25,$2e
|
| 2045 |
|
|
dc.b $2e,$0e,$02,$08,$07,$19,$5e,$2e
|
| 2046 |
|
|
dc.b $2e,$2e,$0d,$0a,$15,$26,$2a,$2e
|
| 2047 |
|
|
dc.b $2e,$3c,$0b,$09,$0f,$29,$28,$2e
|
| 2048 |
|
|
dc.b $2e,$3e,$3f,$0c,$3a,$10,$5f,$2e
|
| 2049 |
|
|
dc.b $2e,$2e,$22,$2e,$7b,$2b,$2e,$2e
|
| 2050 |
|
|
dc.b $2e,$2e,$0d,$7d,$2e,$7c,$2e,$2e
|
| 2051 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$08,$2e
|
| 2052 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2053 |
|
|
dc.b $2e,$7f,$2e,$2e,$2e,$2e,$1b,$2e
|
| 2054 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2055 |
|
|
|
| 2056 |
|
|
_keybdExtendedCodes:
|
| 2057 |
|
|
dc.b $2e,$2e,$2e,$2e,$a3,$a1,$a2,$2e
|
| 2058 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2059 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2060 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2061 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2062 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2063 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2064 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2065 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2066 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2067 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2068 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2069 |
|
|
dc.b $2e,$2e,$2e,$2e,$2e,$2e,$2e,$2e
|
| 2070 |
|
|
dc.b $2e,$95,$2e,$93,$94,$2e,$2e,$2e
|
| 2071 |
|
|
dc.b $98,$99,$92,$2e,$91,$90,$2e,$2e
|
| 2072 |
|
|
dc.b $2e,$2e,$97,$2e,$2e,$96,$2e,$2e
|
| 2073 |
|
|
|
| 2074 |
|
|
;==============================================================================
|
| 2075 |
|
|
;==============================================================================
|
| 2076 |
|
|
; Monitor
|
| 2077 |
|
|
;==============================================================================
|
| 2078 |
|
|
;==============================================================================
|
| 2079 |
|
|
|
| 2080 |
|
|
cmdString:
|
| 2081 |
|
|
dc.b '?'+$80 ; ? display help
|
| 2082 |
|
|
dc.b 'L'+$80 ; L load S19 file
|
| 2083 |
|
|
dc.b 'F','B'+$80 ; FB fill with byte
|
| 2084 |
|
|
dc.b 'F','W'+$80 ; FW fill with wyde
|
| 2085 |
|
|
dc.b 'F','L'+$80 ; FL fill with long wyde
|
| 2086 |
|
|
dc.b 'B','A'+$80 ; BA start Tiny Basic
|
| 2087 |
|
|
dc.b 'B','R'+$80 ; BR breakpoint
|
| 2088 |
|
|
dc.b 'D','R'+$80 ; DR dump registers
|
| 2089 |
|
|
dc.b 'D'+$80 ; D dump memory
|
| 2090 |
|
|
dc.b 'J'+$80 ; J jump to code
|
| 2091 |
|
|
dc.b ':'+$80 ; : edit memory
|
| 2092 |
|
|
dc.b "CL",'S'+$80 ; CLS clear screen
|
| 2093 |
|
|
dc.b "COR",'E'+$80 ; CORE switch to core
|
| 2094 |
7 |
robfinch |
dc.b "TF",'P'+$80 ; TFP test fp
|
| 2095 |
2 |
robfinch |
dc.b "TRA",'M'+$80 ; TRAM test RAM
|
| 2096 |
|
|
dc.b 'T','R'+$80 ; TR test serial receive
|
| 2097 |
|
|
dc.b 'T'+$80 ; T test CPU
|
| 2098 |
|
|
dc.b 'S'+$80 ; S send serial
|
| 2099 |
|
|
dc.b "RESE",'T'+$80 ; RESET
|
| 2100 |
|
|
dc.b "CLOC",'K'+$80 ; CLOCK
|
| 2101 |
|
|
dc.b 'R'+$80 ; R receive serial
|
| 2102 |
|
|
|
| 2103 |
|
|
align 2
|
| 2104 |
|
|
cmdTable:
|
| 2105 |
|
|
dc.w cmdHelp
|
| 2106 |
|
|
dc.w cmdLoadS19
|
| 2107 |
|
|
dc.w cmdFillB
|
| 2108 |
|
|
dc.w cmdFillW
|
| 2109 |
|
|
dc.w cmdFillL
|
| 2110 |
|
|
dc.w cmdTinyBasic
|
| 2111 |
|
|
dc.w cmdBreakpoint
|
| 2112 |
|
|
dc.w cmdDumpRegs
|
| 2113 |
|
|
dc.w cmdDumpMemory
|
| 2114 |
|
|
dc.w cmdJump
|
| 2115 |
|
|
dc.w cmdEditMemory
|
| 2116 |
|
|
dc.w cmdClearScreen
|
| 2117 |
|
|
dc.w cmdCore
|
| 2118 |
7 |
robfinch |
dc.w cmdTestFP
|
| 2119 |
2 |
robfinch |
dc.w cmdTestRAM
|
| 2120 |
|
|
dc.w cmdTestSerialReceive
|
| 2121 |
|
|
dc.w cmdTestCPU
|
| 2122 |
|
|
dc.w cmdSendSerial
|
| 2123 |
|
|
dc.w cmdReset
|
| 2124 |
|
|
dc.w cmdClock
|
| 2125 |
|
|
dc.w cmdReceiveSerial
|
| 2126 |
|
|
dc.w cmdMonitor
|
| 2127 |
|
|
|
| 2128 |
|
|
; Get a word from screen memory and swap byte order
|
| 2129 |
|
|
|
| 2130 |
|
|
FromScreen:
|
| 2131 |
|
|
move.l (a0),d1
|
| 2132 |
|
|
bsr rbo
|
| 2133 |
|
|
lea 8(a0),a0 ; increment screen pointer
|
| 2134 |
|
|
rts
|
| 2135 |
|
|
|
| 2136 |
|
|
StartMon:
|
| 2137 |
|
|
clr.w NumSetBreakpoints
|
| 2138 |
|
|
bsr ClearBreakpointList
|
| 2139 |
|
|
cmdMonitor:
|
| 2140 |
|
|
Monitor:
|
| 2141 |
|
|
; Reset the stack pointer on each entry into the monitor
|
| 2142 |
|
|
move.l #$40FFC,sp ; reset core's stack
|
| 2143 |
|
|
move.w #$2200,sr ; enable level 2 and higher interrupts
|
| 2144 |
|
|
movec coreno,d0
|
| 2145 |
|
|
swap d0
|
| 2146 |
|
|
moveq #1,d1
|
| 2147 |
|
|
bsr UnlockSemaphore
|
| 2148 |
|
|
clr.b KeybdEcho ; turn off keyboard echo
|
| 2149 |
|
|
PromptLn:
|
| 2150 |
|
|
bsr CRLF
|
| 2151 |
|
|
move.b #'$',d1
|
| 2152 |
|
|
bsr DisplayChar
|
| 2153 |
|
|
|
| 2154 |
|
|
; Get characters until a CR is keyed
|
| 2155 |
|
|
;
|
| 2156 |
|
|
Prompt3:
|
| 2157 |
|
|
bsr GetKey
|
| 2158 |
|
|
cmpi.b #-1,d1
|
| 2159 |
|
|
beq.s Prompt3
|
| 2160 |
|
|
cmpi.b #CR,d1
|
| 2161 |
|
|
beq.s Prompt1
|
| 2162 |
|
|
bsr DisplayChar
|
| 2163 |
|
|
bra.s Prompt3
|
| 2164 |
|
|
|
| 2165 |
|
|
; Process the screen line that the CR was keyed on
|
| 2166 |
|
|
|
| 2167 |
|
|
Prompt1:
|
| 2168 |
|
|
clr.b CursorCol ; go back to the start of the line
|
| 2169 |
|
|
bsr CalcScreenLoc ; a0 = screen memory location
|
| 2170 |
|
|
.0001:
|
| 2171 |
|
|
bsr FromScreen ; grab character off screen
|
| 2172 |
|
|
cmpi.b #'$',d1 ; skip over '$' prompt character
|
| 2173 |
|
|
beq.s .0001
|
| 2174 |
|
|
|
| 2175 |
|
|
; Dispatch based on command string
|
| 2176 |
|
|
|
| 2177 |
|
|
cmdDispatch:
|
| 2178 |
|
|
lea cmdString,a2
|
| 2179 |
|
|
clr.l d4 ; command counter
|
| 2180 |
|
|
lea -8(a0),a0 ; backup a character
|
| 2181 |
|
|
move.l a0,a3 ; a3 = start of command on screen
|
| 2182 |
|
|
.checkNextCmd:
|
| 2183 |
|
|
bsr FromScreen ; d1 = char from input screen
|
| 2184 |
|
|
move.b (a2)+,d5
|
| 2185 |
|
|
eor.b d5,d1 ; does it match with command string?
|
| 2186 |
|
|
beq.s .checkNextCmd ; If it does, keep matching for longest match
|
| 2187 |
|
|
cmpi.b #$80,d1 ; didn't match, was it the end of the command?
|
| 2188 |
|
|
beq.s .foundCmd
|
| 2189 |
|
|
tst.b -1(a2) ; was end of table hit?
|
| 2190 |
|
|
beq.s .endOfTable
|
| 2191 |
|
|
addi.w #2,d4 ; increment command counter
|
| 2192 |
|
|
move.l a3,a0 ; reset input pointer
|
| 2193 |
|
|
tst.b -1(a2) ; were we at the end of the command?
|
| 2194 |
|
|
bmi.s .checkNextCmd ; if were at end continue, otherwise scan for enf of cmd
|
| 2195 |
|
|
.scanToEndOfCmd
|
| 2196 |
|
|
tst.b (a2)+ ; scan to end of command
|
| 2197 |
|
|
beq.s .endOfTable
|
| 2198 |
|
|
bpl.s .scanToEndOfCmd
|
| 2199 |
|
|
bmi.s .checkNextCmd
|
| 2200 |
|
|
.endOfTable
|
| 2201 |
|
|
lea msgUnknownCmd,a1
|
| 2202 |
|
|
bsr DisplayStringCRLF
|
| 2203 |
|
|
bra Monitor
|
| 2204 |
|
|
.foundCmd:
|
| 2205 |
|
|
lea cmdTable,a1 ; a1 = pointer to command address table
|
| 2206 |
|
|
move.w (a1,d4.w),a1 ; fetch command routine address from table
|
| 2207 |
|
|
jmp (a1) ; go execute command
|
| 2208 |
|
|
|
| 2209 |
|
|
cmdBreakpoint:
|
| 2210 |
|
|
bsr ignBlanks
|
| 2211 |
|
|
bsr FromScreen
|
| 2212 |
|
|
cmpi.b #'+',d1
|
| 2213 |
|
|
beq ArmBreakpoint
|
| 2214 |
|
|
cmpi.b #'-',d1
|
| 2215 |
|
|
beq DisarmBreakpoint
|
| 2216 |
|
|
cmpi.b #'L',d1
|
| 2217 |
|
|
beq ListBreakpoints
|
| 2218 |
|
|
bra Monitor
|
| 2219 |
|
|
|
| 2220 |
|
|
cmdTinyBasic:
|
| 2221 |
|
|
bra CSTART
|
| 2222 |
|
|
|
| 2223 |
|
|
cmdTestCPU:
|
| 2224 |
|
|
bsr cpu_test
|
| 2225 |
|
|
lea msg_test_done,a1
|
| 2226 |
|
|
bsr DisplayStringCRLF
|
| 2227 |
|
|
bra Monitor
|
| 2228 |
|
|
|
| 2229 |
|
|
cmdClearScreen:
|
| 2230 |
|
|
bsr ClearScreen
|
| 2231 |
|
|
bsr HomeCursor
|
| 2232 |
|
|
bra Monitor
|
| 2233 |
|
|
|
| 2234 |
|
|
cmdCore:
|
| 2235 |
|
|
bsr ignBlanks
|
| 2236 |
|
|
bsr FromScreen
|
| 2237 |
|
|
cmpi.b #'2',d1 ; check range
|
| 2238 |
|
|
blo Monitor
|
| 2239 |
|
|
cmpi.b #'9',d1
|
| 2240 |
|
|
bhi Monitor
|
| 2241 |
|
|
subi.b #'0',d1 ; convert ascii to binary
|
| 2242 |
|
|
bsr select_iofocus
|
| 2243 |
|
|
bra Monitor
|
| 2244 |
|
|
|
| 2245 |
7 |
robfinch |
cmdTestFP:
|
| 2246 |
|
|
bsr ignBlanks
|
| 2247 |
|
|
bsr GetDecNumber
|
| 2248 |
|
|
move.l d1,d3
|
| 2249 |
|
|
bsr ignBlanks
|
| 2250 |
|
|
bsr FromScreen
|
| 2251 |
|
|
move.b d1,d7
|
| 2252 |
|
|
bsr ignBlanks
|
| 2253 |
|
|
bsr GetDecNumber
|
| 2254 |
|
|
move.l d1,d2
|
| 2255 |
|
|
bsr CRLF
|
| 2256 |
|
|
fmove.l d3,fp0 ; this should do I2FP
|
| 2257 |
|
|
; moveq #39,d0
|
| 2258 |
|
|
; moveq #40,d1
|
| 2259 |
|
|
; moveq #30,d2
|
| 2260 |
|
|
; moveq #'e',d3
|
| 2261 |
|
|
; trap #15
|
| 2262 |
|
|
; bsr CRLF
|
| 2263 |
|
|
fmove.l d2,fp1 ; this should do I2FP
|
| 2264 |
|
|
fmove.p fp0,fpBuf
|
| 2265 |
|
|
fmove.p fp1,fpBuf+16
|
| 2266 |
|
|
cmpi.b #'+',d7
|
| 2267 |
|
|
bne .0001
|
| 2268 |
|
|
fadd fp1,fp0
|
| 2269 |
|
|
bra .0002
|
| 2270 |
|
|
.0001
|
| 2271 |
|
|
cmpi.b #'-',d7
|
| 2272 |
|
|
bne .0003
|
| 2273 |
|
|
fsub fp1,fp0
|
| 2274 |
|
|
bra .0002
|
| 2275 |
|
|
.0003
|
| 2276 |
|
|
cmpi.b #'*',d7
|
| 2277 |
|
|
bne .0004
|
| 2278 |
|
|
fmul fp1,fp0
|
| 2279 |
|
|
bra .0002
|
| 2280 |
|
|
.0004
|
| 2281 |
|
|
cmpi.b #'/',d7
|
| 2282 |
|
|
bne .0005
|
| 2283 |
|
|
fdiv fp1,fp0
|
| 2284 |
|
|
bra .0002
|
| 2285 |
|
|
.0002
|
| 2286 |
|
|
fmove.p fp0,fpBuf+32
|
| 2287 |
|
|
lea _fpBuf,a1 ; a0 = pointer to buffer to use
|
| 2288 |
|
|
moveq #39,d0
|
| 2289 |
|
|
moveq #40,d1
|
| 2290 |
|
|
moveq #30,d2
|
| 2291 |
|
|
moveq #'e',d3
|
| 2292 |
|
|
trap #15
|
| 2293 |
|
|
.0005
|
| 2294 |
|
|
bsr CRLF
|
| 2295 |
|
|
bra Monitor
|
| 2296 |
|
|
|
| 2297 |
2 |
robfinch |
;-------------------------------------------------------------------------------
|
| 2298 |
|
|
; CLOCK
|
| 2299 |
|
|
; Set the clock register to n which will turn off or on clocks to the CPUs.
|
| 2300 |
|
|
;-------------------------------------------------------------------------------
|
| 2301 |
|
|
|
| 2302 |
|
|
cmdClock:
|
| 2303 |
|
|
bsr ignBlanks
|
| 2304 |
|
|
bsr GetHexNumber
|
| 2305 |
|
|
tst.b d0 ; was there a number?
|
| 2306 |
|
|
beq Monitor
|
| 2307 |
|
|
ori.w #4,d0 ; primary core's clock cannot be turned off
|
| 2308 |
|
|
rol.w #8,d1 ; switch byte order
|
| 2309 |
|
|
move.w d1,RST_REG+2
|
| 2310 |
|
|
bra Monitor
|
| 2311 |
|
|
|
| 2312 |
|
|
;-------------------------------------------------------------------------------
|
| 2313 |
|
|
; RESET
|
| 2314 |
|
|
; Reset the specified core. Resetting the core automatically turns on the
|
| 2315 |
|
|
; core's clock.
|
| 2316 |
|
|
;-------------------------------------------------------------------------------
|
| 2317 |
|
|
|
| 2318 |
|
|
cmdReset:
|
| 2319 |
|
|
bsr ignBlanks
|
| 2320 |
|
|
bsr FromScreen
|
| 2321 |
|
|
cmpi.b #'2',d1 ; check range
|
| 2322 |
|
|
blo Monitor
|
| 2323 |
|
|
cmpi.b #'9',d1
|
| 2324 |
|
|
bhi Monitor
|
| 2325 |
|
|
subi.b #'0',d1 ; convert ascii to binary
|
| 2326 |
|
|
lsl.w #1,d1 ; make into index
|
| 2327 |
|
|
lea tblPow2,a1
|
| 2328 |
|
|
move.w (a1,d1.w),d1
|
| 2329 |
|
|
rol.w #8,d1 ; reverse byte order
|
| 2330 |
|
|
move.w d1,RST_REG
|
| 2331 |
|
|
bra Monitor
|
| 2332 |
|
|
|
| 2333 |
|
|
tblPow2:
|
| 2334 |
|
|
dc.w 1
|
| 2335 |
|
|
dc.w 2
|
| 2336 |
|
|
dc.w 4
|
| 2337 |
|
|
dc.w 8
|
| 2338 |
|
|
dc.w 16
|
| 2339 |
|
|
dc.w 32
|
| 2340 |
|
|
dc.w 64
|
| 2341 |
|
|
dc.w 128
|
| 2342 |
|
|
dc.w 256
|
| 2343 |
|
|
dc.w 512
|
| 2344 |
|
|
dc.w 1024
|
| 2345 |
|
|
dc.w 2048
|
| 2346 |
|
|
dc.w 4096
|
| 2347 |
|
|
dc.w 8192
|
| 2348 |
|
|
dc.w 16384
|
| 2349 |
|
|
dc.w 32768
|
| 2350 |
|
|
even
|
| 2351 |
|
|
|
| 2352 |
|
|
cmdHelp:
|
| 2353 |
|
|
DisplayHelp:
|
| 2354 |
|
|
lea HelpMsg,a1
|
| 2355 |
|
|
bsr DisplayString
|
| 2356 |
|
|
bra Monitor
|
| 2357 |
|
|
|
| 2358 |
|
|
HelpMsg:
|
| 2359 |
|
|
dc.b "? = Display help",LF,CR
|
| 2360 |
|
|
dc.b "CORE n = switch to core n, n = 2 to 7",LF,CR
|
| 2361 |
|
|
dc.b "RESET n = reset core n",LF,CR
|
| 2362 |
|
|
dc.b "CLS = clear screen",LF,CR
|
| 2363 |
|
|
dc.b ": = Edit memory bytes",LF,CR
|
| 2364 |
|
|
dc.b "FB = Fill memory bytes, FW, FL",LF,CR
|
| 2365 |
|
|
dc.b "L = Load S19 file",LF,CR
|
| 2366 |
|
|
dc.b "D = Dump memory, DR = dump registers",LF,CR
|
| 2367 |
|
|
dc.b "BA = start tiny basic",LF,CR
|
| 2368 |
|
|
dc.b "BR = set breakpoint",LF,CR
|
| 2369 |
|
|
dc.b "J = Jump to code",LF,CR
|
| 2370 |
|
|
dc.b "S = send to serial port",LF,CR
|
| 2371 |
|
|
dc.b "T = cpu test program",LF,CR
|
| 2372 |
|
|
dc.b "TRAM = test RAM",LF,CR,0
|
| 2373 |
|
|
|
| 2374 |
|
|
msgUnknownCmd:
|
| 2375 |
|
|
dc.b "command unknown",0
|
| 2376 |
|
|
|
| 2377 |
|
|
msgHello:
|
| 2378 |
|
|
dc.b LF,CR,"Hello World!",LF,CR,0
|
| 2379 |
|
|
even
|
| 2380 |
|
|
|
| 2381 |
|
|
;------------------------------------------------------------------------------
|
| 2382 |
|
|
; This routine borrowed from Gordo's Tiny Basic interpreter.
|
| 2383 |
|
|
; Used to fetch a command line. (Not currently used).
|
| 2384 |
|
|
;
|
| 2385 |
|
|
; d0.b - command prompt
|
| 2386 |
|
|
;------------------------------------------------------------------------------
|
| 2387 |
|
|
|
| 2388 |
|
|
GetCmdLine:
|
| 2389 |
|
|
bsr DisplayChar ; display prompt
|
| 2390 |
|
|
move.b #' ',d0
|
| 2391 |
|
|
bsr DisplayChar
|
| 2392 |
|
|
lea CmdBuf,a0
|
| 2393 |
|
|
.0001:
|
| 2394 |
|
|
bsr GetKey
|
| 2395 |
|
|
cmp.b #CTRLH,d0
|
| 2396 |
|
|
beq.s .0003
|
| 2397 |
|
|
cmp.b #CTRLX,d0
|
| 2398 |
|
|
beq.s .0004
|
| 2399 |
|
|
cmp.b #CR,d0
|
| 2400 |
|
|
beq.s .0002
|
| 2401 |
|
|
cmp.b #' ',d0
|
| 2402 |
|
|
bcs.s .0001
|
| 2403 |
|
|
.0002:
|
| 2404 |
|
|
move.b d0,(a0)
|
| 2405 |
|
|
lea 8(a0),a0
|
| 2406 |
|
|
bsr DisplayChar
|
| 2407 |
|
|
cmp.b #CR,d0
|
| 2408 |
|
|
beq .0007
|
| 2409 |
|
|
cmp.l #CmdBufEnd-1,a0
|
| 2410 |
|
|
bcs.s .0001
|
| 2411 |
|
|
.0003:
|
| 2412 |
|
|
move.b #CTRLH,d0
|
| 2413 |
|
|
bsr DisplayChar
|
| 2414 |
|
|
move.b #' ',d0
|
| 2415 |
|
|
bsr DisplayChar
|
| 2416 |
|
|
cmp.l #CmdBuf,a0
|
| 2417 |
|
|
bls.s .0001
|
| 2418 |
|
|
move.b #CTRLH,d0
|
| 2419 |
|
|
bsr DisplayChar
|
| 2420 |
|
|
subq.l #1,a0
|
| 2421 |
|
|
bra.s .0001
|
| 2422 |
|
|
.0004:
|
| 2423 |
|
|
move.l a0,d1
|
| 2424 |
|
|
sub.l #CmdBuf,d1
|
| 2425 |
|
|
beq.s .0006
|
| 2426 |
|
|
subq #1,d1
|
| 2427 |
|
|
.0005:
|
| 2428 |
|
|
move.b #CTRLH,d0
|
| 2429 |
|
|
bsr DisplayChar
|
| 2430 |
|
|
move.b #' ',d0
|
| 2431 |
|
|
bsr DisplayChar
|
| 2432 |
|
|
move.b #CTRLH,d0
|
| 2433 |
|
|
bsr DisplayChar
|
| 2434 |
|
|
dbra d1,.0005
|
| 2435 |
|
|
.0006:
|
| 2436 |
|
|
lea CmdBuf,a0
|
| 2437 |
|
|
bra .0001
|
| 2438 |
|
|
.0007:
|
| 2439 |
|
|
move.b #LF,d0
|
| 2440 |
|
|
bsr DisplayChar
|
| 2441 |
|
|
rts
|
| 2442 |
|
|
|
| 2443 |
|
|
;------------------------------------------------------------------------------
|
| 2444 |
|
|
; S
|
| 2445 |
|
|
; Send data buffer to serial port
|
| 2446 |
|
|
; S 40000 40
|
| 2447 |
|
|
;------------------------------------------------------------------------------
|
| 2448 |
|
|
|
| 2449 |
|
|
cmdSendSerial:
|
| 2450 |
|
|
bsr ignBlanks
|
| 2451 |
|
|
bsr GetHexNumber
|
| 2452 |
|
|
beq Monitor
|
| 2453 |
|
|
move.l d1,d6 ; d6 points to buffer
|
| 2454 |
|
|
bsr ignBlanks
|
| 2455 |
|
|
bsr GetHexNumber
|
| 2456 |
|
|
bne.s .0003
|
| 2457 |
|
|
moveq #16,d1
|
| 2458 |
|
|
.0003:
|
| 2459 |
|
|
move.l d6,a1 ; a1 points to buffer
|
| 2460 |
|
|
move.l d1,d2 ; d2 = count of bytes to send
|
| 2461 |
|
|
bra.s .0002 ; enter loop at bottom
|
| 2462 |
|
|
.0001:
|
| 2463 |
|
|
move.b (a1)+,d1
|
| 2464 |
|
|
move.w #34,d0 ; serial putchar
|
| 2465 |
|
|
trap #15
|
| 2466 |
|
|
.0002:
|
| 2467 |
|
|
dbra d2,.0001
|
| 2468 |
|
|
bra Monitor
|
| 2469 |
|
|
|
| 2470 |
|
|
;------------------------------------------------------------------------------
|
| 2471 |
|
|
; R
|
| 2472 |
|
|
; Send data buffer to serial port
|
| 2473 |
|
|
; R 10000 40
|
| 2474 |
|
|
;------------------------------------------------------------------------------
|
| 2475 |
|
|
|
| 2476 |
|
|
cmdReceiveSerial:
|
| 2477 |
|
|
bsr ignBlanks
|
| 2478 |
|
|
bsr GetHexNumber
|
| 2479 |
|
|
beq Monitor
|
| 2480 |
|
|
move.l d1,d6 ; d6 points to buffer
|
| 2481 |
|
|
bsr ignBlanks
|
| 2482 |
|
|
bsr GetHexNumber
|
| 2483 |
|
|
bne.s .0003
|
| 2484 |
|
|
moveq #16,d1
|
| 2485 |
|
|
.0003:
|
| 2486 |
|
|
move.l d6,a1 ; a1 points to buffer
|
| 2487 |
|
|
move.l d1,d2 ; d2 = count of bytes to send
|
| 2488 |
|
|
bra.s .0002 ; enter loop at bottom
|
| 2489 |
|
|
.0001:
|
| 2490 |
|
|
move.w #36,d0 ; serial peek char
|
| 2491 |
|
|
trap #15
|
| 2492 |
|
|
tst.l d1
|
| 2493 |
|
|
bmi.s .0001
|
| 2494 |
|
|
move.b d1,(a1)+
|
| 2495 |
|
|
.0002:
|
| 2496 |
|
|
dbra d2,.0001
|
| 2497 |
|
|
bra Monitor
|
| 2498 |
|
|
|
| 2499 |
|
|
;------------------------------------------------------------------------------
|
| 2500 |
|
|
; Fill memory
|
| 2501 |
|
|
;
|
| 2502 |
|
|
; FB = fill bytes FB 00000010 100 FF ; fill starting at 10 for 256 bytes
|
| 2503 |
|
|
; FW = fill words
|
| 2504 |
|
|
; FL = fill longs
|
| 2505 |
|
|
; F = fill bytes
|
| 2506 |
|
|
;------------------------------------------------------------------------------
|
| 2507 |
|
|
|
| 2508 |
|
|
cmdFillB:
|
| 2509 |
|
|
bsr ignBlanks
|
| 2510 |
|
|
bsr GetHexNumber
|
| 2511 |
|
|
move.l d1,a1 ; a1 = start
|
| 2512 |
|
|
bsr ignBlanks
|
| 2513 |
|
|
bsr GetHexNumber
|
| 2514 |
|
|
move.l d1,d3 ; d3 = count
|
| 2515 |
|
|
beq Monitor
|
| 2516 |
|
|
bsr ignBlanks
|
| 2517 |
|
|
bsr GetHexNumber ; fill value
|
| 2518 |
|
|
.fmem:
|
| 2519 |
|
|
move.b d1,(a1)+
|
| 2520 |
|
|
sub.l #1,d3
|
| 2521 |
|
|
bne.s .fmem
|
| 2522 |
|
|
bra Monitor
|
| 2523 |
|
|
|
| 2524 |
|
|
cmdFillW:
|
| 2525 |
|
|
bsr ignBlanks
|
| 2526 |
|
|
bsr GetHexNumber
|
| 2527 |
|
|
move.l d1,a1 ; a1 = start
|
| 2528 |
|
|
bsr ignBlanks
|
| 2529 |
|
|
bsr GetHexNumber
|
| 2530 |
|
|
move.l d1,d3 ; d3 = count
|
| 2531 |
|
|
beq Monitor
|
| 2532 |
|
|
bsr ignBlanks
|
| 2533 |
|
|
bsr GetHexNumber ; fill value
|
| 2534 |
|
|
.fmem:
|
| 2535 |
|
|
move.w d1,(a1)+
|
| 2536 |
|
|
sub.l #1,d3
|
| 2537 |
|
|
bne.s .fmem
|
| 2538 |
|
|
bra Monitor
|
| 2539 |
|
|
|
| 2540 |
|
|
cmdFillL:
|
| 2541 |
|
|
bsr ignBlanks
|
| 2542 |
|
|
bsr GetHexNumber
|
| 2543 |
|
|
move.l d1,a1 ; a1 = start
|
| 2544 |
|
|
bsr ignBlanks
|
| 2545 |
|
|
bsr GetHexNumber
|
| 2546 |
|
|
move.l d1,d3 ; d3 = count
|
| 2547 |
|
|
beq Monitor
|
| 2548 |
|
|
bsr ignBlanks
|
| 2549 |
|
|
bsr GetHexNumber ; fill value
|
| 2550 |
|
|
.fmem:
|
| 2551 |
|
|
move.l d1,(a1)+
|
| 2552 |
|
|
sub.l #1,d3
|
| 2553 |
|
|
bne.s .fmem
|
| 2554 |
|
|
bra Monitor
|
| 2555 |
|
|
|
| 2556 |
|
|
;------------------------------------------------------------------------------
|
| 2557 |
|
|
; Modifies:
|
| 2558 |
|
|
; a0 - text pointer
|
| 2559 |
|
|
;------------------------------------------------------------------------------
|
| 2560 |
|
|
|
| 2561 |
|
|
ignBlanks:
|
| 2562 |
|
|
move.l d1,-(a7)
|
| 2563 |
|
|
.0001:
|
| 2564 |
|
|
bsr FromScreen
|
| 2565 |
|
|
cmpi.b #' ',d1
|
| 2566 |
|
|
beq.s .0001
|
| 2567 |
|
|
lea -8(a0),a0
|
| 2568 |
|
|
move.l (a7)+,d1
|
| 2569 |
|
|
rts
|
| 2570 |
|
|
|
| 2571 |
|
|
;------------------------------------------------------------------------------
|
| 2572 |
|
|
; Edit memory byte.
|
| 2573 |
|
|
; Bytes are built into long words in case the memory is only longword
|
| 2574 |
|
|
; accessible.
|
| 2575 |
|
|
;------------------------------------------------------------------------------
|
| 2576 |
|
|
|
| 2577 |
|
|
cmdEditMemory:
|
| 2578 |
|
|
bsr ignBlanks
|
| 2579 |
|
|
bsr GetHexNumber
|
| 2580 |
|
|
move.l d1,a1
|
| 2581 |
|
|
edtmem1:
|
| 2582 |
|
|
clr.l d2
|
| 2583 |
|
|
bsr ignBlanks
|
| 2584 |
|
|
bsr GetHexNumber
|
| 2585 |
|
|
move.b d1,d2
|
| 2586 |
|
|
; move.b d1,(a1)+
|
| 2587 |
|
|
bsr ignBlanks
|
| 2588 |
|
|
bsr GetHexNumber
|
| 2589 |
|
|
lsl.l #8,d2
|
| 2590 |
|
|
move.b d1,d2
|
| 2591 |
|
|
; move.b d1,(a1)+
|
| 2592 |
|
|
bsr ignBlanks
|
| 2593 |
|
|
bsr GetHexNumber
|
| 2594 |
|
|
lsl.l #8,d2
|
| 2595 |
|
|
move.b d1,d2
|
| 2596 |
|
|
; move.b d1,(a1)+
|
| 2597 |
|
|
bsr ignBlanks
|
| 2598 |
|
|
bsr GetHexNumber
|
| 2599 |
|
|
lsl.l #8,d2
|
| 2600 |
|
|
move.b d1,d2
|
| 2601 |
|
|
move.l d2,(a1)+
|
| 2602 |
|
|
; move.b d1,(a1)+
|
| 2603 |
|
|
clr.l d2
|
| 2604 |
|
|
bsr ignBlanks
|
| 2605 |
|
|
bsr GetHexNumber
|
| 2606 |
|
|
move.b d1,d2
|
| 2607 |
|
|
; move.b d1,(a1)+
|
| 2608 |
|
|
bsr ignBlanks
|
| 2609 |
|
|
bsr GetHexNumber
|
| 2610 |
|
|
lsl.l #8,d2
|
| 2611 |
|
|
move.b d1,d2
|
| 2612 |
|
|
; move.b d1,(a1)+
|
| 2613 |
|
|
bsr ignBlanks
|
| 2614 |
|
|
bsr GetHexNumber
|
| 2615 |
|
|
lsl.l #8,d2
|
| 2616 |
|
|
move.b d1,d2
|
| 2617 |
|
|
; move.b d1,(a1)+
|
| 2618 |
|
|
bsr ignBlanks
|
| 2619 |
|
|
bsr GetHexNumber
|
| 2620 |
|
|
lsl.l #8,d2
|
| 2621 |
|
|
move.b d1,d2
|
| 2622 |
|
|
; move.b d1,(a1)+
|
| 2623 |
|
|
move.l d2,(a1)+
|
| 2624 |
|
|
bra Monitor
|
| 2625 |
|
|
|
| 2626 |
|
|
;------------------------------------------------------------------------------
|
| 2627 |
|
|
; Execute code at the specified address.
|
| 2628 |
|
|
;------------------------------------------------------------------------------
|
| 2629 |
|
|
|
| 2630 |
|
|
cmdJump:
|
| 2631 |
|
|
ExecuteCode:
|
| 2632 |
|
|
bsr ignBlanks
|
| 2633 |
|
|
bsr GetHexNumber
|
| 2634 |
|
|
move.l d1,a0
|
| 2635 |
|
|
jsr (a0)
|
| 2636 |
|
|
bra Monitor
|
| 2637 |
|
|
|
| 2638 |
|
|
;------------------------------------------------------------------------------
|
| 2639 |
|
|
; Do a memory dump of the requested location.
|
| 2640 |
|
|
; D 0800 0850
|
| 2641 |
|
|
;------------------------------------------------------------------------------
|
| 2642 |
|
|
|
| 2643 |
|
|
cmdDumpMemory:
|
| 2644 |
|
|
bsr ignBlanks
|
| 2645 |
|
|
bsr GetHexNumber
|
| 2646 |
|
|
beq Monitor ; was there a number ? no, other garbage, just ignore
|
| 2647 |
|
|
move.l d1,d3 ; save off start of range
|
| 2648 |
|
|
bsr ignBlanks
|
| 2649 |
|
|
bsr GetHexNumber
|
| 2650 |
|
|
bne.s DumpMem1
|
| 2651 |
|
|
move.l d3,d1
|
| 2652 |
|
|
addi.l #64,d1 ; no end specified, just dump 64 bytes
|
| 2653 |
|
|
DumpMem1:
|
| 2654 |
|
|
move.l d3,a0
|
| 2655 |
|
|
move.l d1,a1
|
| 2656 |
|
|
bsr CRLF
|
| 2657 |
|
|
.0001:
|
| 2658 |
|
|
cmpa.l a0,a1
|
| 2659 |
|
|
bls Monitor
|
| 2660 |
|
|
bsr DisplayMem
|
| 2661 |
|
|
bra.s .0001
|
| 2662 |
|
|
|
| 2663 |
|
|
;------------------------------------------------------------------------------
|
| 2664 |
|
|
; Display memory dump in a format suitable for edit.
|
| 2665 |
|
|
;
|
| 2666 |
|
|
; :12345678 00 11 22 33 44 55 66 77 "........"
|
| 2667 |
|
|
;
|
| 2668 |
|
|
; Modifies:
|
| 2669 |
|
|
; d1,d2,a0
|
| 2670 |
|
|
;------------------------------------------------------------------------------
|
| 2671 |
|
|
|
| 2672 |
|
|
DisplayMem:
|
| 2673 |
|
|
move.b #':',d1
|
| 2674 |
|
|
bsr DisplayChar
|
| 2675 |
|
|
move.l a0,d1
|
| 2676 |
|
|
bsr DisplayTetra
|
| 2677 |
|
|
moveq #7,d2
|
| 2678 |
|
|
dspmem1:
|
| 2679 |
|
|
move.b #' ',d1
|
| 2680 |
|
|
bsr DisplayChar
|
| 2681 |
|
|
move.b (a0)+,d1
|
| 2682 |
|
|
bsr DisplayByte
|
| 2683 |
|
|
dbra d2,dspmem1
|
| 2684 |
|
|
bsr DisplayTwoSpaces
|
| 2685 |
|
|
move.b #34,d1
|
| 2686 |
|
|
bsr DisplayChar
|
| 2687 |
|
|
lea -8(a0),a0
|
| 2688 |
|
|
moveq #7,d2
|
| 2689 |
|
|
.0002:
|
| 2690 |
|
|
move.b (a0)+,d1
|
| 2691 |
|
|
cmp.b #' ',d1
|
| 2692 |
|
|
blo.s .0003
|
| 2693 |
|
|
cmp.b #127,d1
|
| 2694 |
|
|
bls.s .0001
|
| 2695 |
|
|
.0003:
|
| 2696 |
|
|
move.b #'.',d1
|
| 2697 |
|
|
.0001:
|
| 2698 |
|
|
bsr DisplayChar
|
| 2699 |
|
|
dbra d2,.0002
|
| 2700 |
|
|
move.b #34,d1
|
| 2701 |
|
|
bsr DisplayChar
|
| 2702 |
|
|
bsr CheckForCtrlC
|
| 2703 |
|
|
bra CRLF
|
| 2704 |
|
|
|
| 2705 |
|
|
;------------------------------------------------------------------------------
|
| 2706 |
|
|
; Dump Registers
|
| 2707 |
|
|
; The dump is in a format that allows the register value to be edited.
|
| 2708 |
|
|
;
|
| 2709 |
|
|
; RegD0 12345678
|
| 2710 |
|
|
; RegD1 77777777
|
| 2711 |
|
|
; ... etc
|
| 2712 |
|
|
;------------------------------------------------------------------------------
|
| 2713 |
|
|
|
| 2714 |
|
|
cmdDumpRegs:
|
| 2715 |
|
|
bsr CRLF
|
| 2716 |
|
|
move.w #15,d0 ; number of registers-1
|
| 2717 |
|
|
lea msg_reglist,a0 ;
|
| 2718 |
|
|
lea msg_regs,a1
|
| 2719 |
|
|
lea Regsave,a2 ; a2 points to register save area
|
| 2720 |
|
|
.0001:
|
| 2721 |
|
|
bsr DisplayString
|
| 2722 |
|
|
move.b (a0)+,d1
|
| 2723 |
|
|
bsr DisplayChar
|
| 2724 |
|
|
move.b (a0)+,d1
|
| 2725 |
|
|
bsr DisplayChar
|
| 2726 |
|
|
bsr DisplaySpace
|
| 2727 |
|
|
move.l (a2)+,d1
|
| 2728 |
|
|
bsr DisplayTetra
|
| 2729 |
|
|
bsr CRLF
|
| 2730 |
|
|
dbra d0,.0001
|
| 2731 |
|
|
bsr DisplayString
|
| 2732 |
|
|
move.b (a0)+,d1
|
| 2733 |
|
|
bsr DisplayChar
|
| 2734 |
|
|
move.b (a0)+,d1
|
| 2735 |
|
|
bsr DisplayChar
|
| 2736 |
|
|
bsr DisplaySpace
|
| 2737 |
|
|
move.l Regsave+$44,d1
|
| 2738 |
|
|
bsr DisplayTetra
|
| 2739 |
|
|
bsr CRLF
|
| 2740 |
|
|
bsr DisplayString
|
| 2741 |
|
|
move.b (a0)+,d1
|
| 2742 |
|
|
bsr DisplayChar
|
| 2743 |
|
|
move.b (a0)+,d1
|
| 2744 |
|
|
bsr DisplayChar
|
| 2745 |
|
|
bsr DisplaySpace
|
| 2746 |
|
|
move.w Regsave+$40,d1
|
| 2747 |
|
|
bsr DisplayWyde
|
| 2748 |
|
|
bsr CRLF
|
| 2749 |
|
|
bra Monitor
|
| 2750 |
|
|
|
| 2751 |
|
|
msg_regs:
|
| 2752 |
|
|
dc.b "Reg",0
|
| 2753 |
|
|
msg_reglist:
|
| 2754 |
|
|
dc.b "D0D1D2D3D4D5D6D7A0A1A2A3A4A5A6A7PCSR",0
|
| 2755 |
|
|
|
| 2756 |
|
|
align 1
|
| 2757 |
|
|
|
| 2758 |
|
|
;------------------------------------------------------------------------------
|
| 2759 |
|
|
;------------------------------------------------------------------------------
|
| 2760 |
|
|
|
| 2761 |
|
|
cmdTestSerialReceive:
|
| 2762 |
|
|
.0002:
|
| 2763 |
|
|
moveq #36,d0 ; serial get char from buffer
|
| 2764 |
|
|
trap #15
|
| 2765 |
|
|
; bsr SerialPeekCharDirect
|
| 2766 |
|
|
tst.w d1
|
| 2767 |
|
|
bmi.s .0001
|
| 2768 |
|
|
cmpi.b #CTRLZ,d1
|
| 2769 |
|
|
beq .0003
|
| 2770 |
|
|
bsr DisplayChar
|
| 2771 |
|
|
.0001:
|
| 2772 |
|
|
bsr CheckForCtrlC
|
| 2773 |
|
|
bra .0002
|
| 2774 |
|
|
.0003:
|
| 2775 |
|
|
bsr _KeybdInit
|
| 2776 |
|
|
bra Monitor
|
| 2777 |
|
|
|
| 2778 |
|
|
;------------------------------------------------------------------------------
|
| 2779 |
|
|
; Get a hexidecimal number. Maximum of eight digits.
|
| 2780 |
|
|
;
|
| 2781 |
|
|
; Returns:
|
| 2782 |
|
|
; d0 = number of digits
|
| 2783 |
|
|
; d1 = value of number
|
| 2784 |
|
|
; zf = number of digits == 0
|
| 2785 |
|
|
;------------------------------------------------------------------------------
|
| 2786 |
|
|
|
| 2787 |
|
|
GetHexNumber:
|
| 2788 |
|
|
move.l d2,-(a7)
|
| 2789 |
|
|
clr.l d2
|
| 2790 |
|
|
moveq #0,d0
|
| 2791 |
7 |
robfinch |
.0002
|
| 2792 |
2 |
robfinch |
bsr FromScreen
|
| 2793 |
|
|
bsr AsciiToHexNybble
|
| 2794 |
7 |
robfinch |
cmpi.b #$ff,d1
|
| 2795 |
2 |
robfinch |
beq.s .0001
|
| 2796 |
|
|
lsl.l #4,d2
|
| 2797 |
|
|
andi.l #$0f,d1
|
| 2798 |
|
|
or.l d1,d2
|
| 2799 |
|
|
addq #1,d0
|
| 2800 |
|
|
cmpi.b #8,d0
|
| 2801 |
|
|
blo.s .0002
|
| 2802 |
7 |
robfinch |
.0001
|
| 2803 |
2 |
robfinch |
move.l d2,d1
|
| 2804 |
|
|
move.l (a7)+,d2
|
| 2805 |
|
|
tst.b d0
|
| 2806 |
|
|
rts
|
| 2807 |
|
|
|
| 2808 |
7 |
robfinch |
GetDecNumber:
|
| 2809 |
|
|
movem.l d2/d3,-(a7)
|
| 2810 |
|
|
clr.l d2
|
| 2811 |
|
|
clr.l d0
|
| 2812 |
|
|
.0002
|
| 2813 |
|
|
bsr FromScreen ; grab a character off the screen
|
| 2814 |
|
|
bsr AsciiToHexNybble ; convert to an ascii nybble
|
| 2815 |
|
|
cmpi.b #$ff,d1
|
| 2816 |
|
|
beq.s .0001
|
| 2817 |
|
|
andi.b #$0F,d1 ; d1 = 0 to 9
|
| 2818 |
|
|
move.l d2,d3 ; d3 = current number
|
| 2819 |
|
|
add.l d3,d3 ; d3*2
|
| 2820 |
|
|
lsl.l #3,d2 ; current number * 8
|
| 2821 |
|
|
add.l d3,d2 ; current number * 10
|
| 2822 |
|
|
add.l d1,d2 ; add in new digit
|
| 2823 |
|
|
addq #1,d0 ; increment number of digits
|
| 2824 |
|
|
cmpi.b #9,d0 ; make sure 9 or fewer
|
| 2825 |
|
|
blo .0002
|
| 2826 |
|
|
.0001
|
| 2827 |
|
|
move.l d2,d1 ; return number in d1
|
| 2828 |
|
|
movem.l (a7)+,d2/d3
|
| 2829 |
|
|
tst.b d0
|
| 2830 |
|
|
rts
|
| 2831 |
|
|
|
| 2832 |
2 |
robfinch |
;------------------------------------------------------------------------------
|
| 2833 |
|
|
; Convert ASCII character in the range '0' to '9', 'a' tr 'f' or 'A' to 'F'
|
| 2834 |
|
|
; to a hex nybble.
|
| 2835 |
|
|
;------------------------------------------------------------------------------
|
| 2836 |
|
|
|
| 2837 |
|
|
AsciiToHexNybble:
|
| 2838 |
|
|
cmpi.b #'0',d1
|
| 2839 |
|
|
blo.s gthx3
|
| 2840 |
|
|
cmpi.b #'9',d1
|
| 2841 |
|
|
bhi.s gthx5
|
| 2842 |
|
|
subi.b #'0',d1
|
| 2843 |
|
|
rts
|
| 2844 |
|
|
gthx5:
|
| 2845 |
|
|
cmpi.b #'A',d1
|
| 2846 |
|
|
blo.s gthx3
|
| 2847 |
|
|
cmpi.b #'F',d1
|
| 2848 |
|
|
bhi.s gthx6
|
| 2849 |
|
|
addi.b #10-'A',d1
|
| 2850 |
|
|
rts
|
| 2851 |
|
|
gthx6:
|
| 2852 |
|
|
cmpi.b #'a',d1
|
| 2853 |
|
|
blo.s gthx3
|
| 2854 |
|
|
cmpi.b #'f',d1
|
| 2855 |
|
|
bhi.s gthx3
|
| 2856 |
|
|
addi.b #10-'a',d1
|
| 2857 |
|
|
rts
|
| 2858 |
|
|
gthx3:
|
| 2859 |
|
|
moveq #-1,d1 ; not a hex number
|
| 2860 |
|
|
rts
|
| 2861 |
|
|
|
| 2862 |
|
|
;------------------------------------------------------------------------------
|
| 2863 |
|
|
;------------------------------------------------------------------------------
|
| 2864 |
|
|
|
| 2865 |
|
|
DisplayTwoSpaces:
|
| 2866 |
|
|
move.l d1,-(a7)
|
| 2867 |
|
|
move.b #' ',d1
|
| 2868 |
|
|
bsr DisplayChar
|
| 2869 |
|
|
dspspc1:
|
| 2870 |
|
|
bsr DisplayChar
|
| 2871 |
|
|
move.l (a7)+,d1
|
| 2872 |
|
|
rts
|
| 2873 |
|
|
|
| 2874 |
|
|
DisplaySpace:
|
| 2875 |
|
|
move.l d1,-(a7)
|
| 2876 |
|
|
move.b #' ',d1
|
| 2877 |
|
|
bra dspspc1
|
| 2878 |
|
|
|
| 2879 |
|
|
;------------------------------------------------------------------------------
|
| 2880 |
|
|
; Display the 32 bit word in D1.L
|
| 2881 |
|
|
;------------------------------------------------------------------------------
|
| 2882 |
|
|
|
| 2883 |
|
|
DisplayTetra:
|
| 2884 |
|
|
swap d1
|
| 2885 |
|
|
bsr DisplayWyde
|
| 2886 |
|
|
swap d1
|
| 2887 |
|
|
|
| 2888 |
|
|
;------------------------------------------------------------------------------
|
| 2889 |
|
|
; Display the byte in D1.W
|
| 2890 |
|
|
;------------------------------------------------------------------------------
|
| 2891 |
|
|
|
| 2892 |
|
|
DisplayWyde:
|
| 2893 |
|
|
ror.w #8,d1
|
| 2894 |
|
|
bsr DisplayByte
|
| 2895 |
|
|
rol.w #8,d1
|
| 2896 |
|
|
|
| 2897 |
|
|
;------------------------------------------------------------------------------
|
| 2898 |
|
|
; Display the byte in D1.B
|
| 2899 |
|
|
;------------------------------------------------------------------------------
|
| 2900 |
|
|
|
| 2901 |
|
|
DisplayByte:
|
| 2902 |
|
|
ror.b #4,d1
|
| 2903 |
|
|
bsr DisplayNybble
|
| 2904 |
|
|
rol.b #4,d1
|
| 2905 |
|
|
|
| 2906 |
|
|
;------------------------------------------------------------------------------
|
| 2907 |
|
|
; Display nybble in D1.B
|
| 2908 |
|
|
;------------------------------------------------------------------------------
|
| 2909 |
|
|
|
| 2910 |
|
|
DisplayNybble:
|
| 2911 |
|
|
move.l d1,-(a7)
|
| 2912 |
|
|
andi.b #$F,d1
|
| 2913 |
|
|
addi.b #'0',d1
|
| 2914 |
|
|
cmpi.b #'9',d1
|
| 2915 |
|
|
bls.s .0001
|
| 2916 |
|
|
addi.b #7,d1
|
| 2917 |
|
|
.0001:
|
| 2918 |
|
|
bsr DisplayChar
|
| 2919 |
|
|
move.l (a7)+,d1
|
| 2920 |
|
|
rts
|
| 2921 |
|
|
|
| 2922 |
|
|
;------------------------------------------------------------------------------
|
| 2923 |
|
|
;------------------------------------------------------------------------------
|
| 2924 |
|
|
;
|
| 2925 |
|
|
;DisplayHexNumber:
|
| 2926 |
|
|
; move.w #$A6A6,leds ; diagnostics
|
| 2927 |
|
|
; move.l #VDGREG,a6
|
| 2928 |
|
|
; move.w #7,d2 ; number-1 of digits to display
|
| 2929 |
|
|
;disphnum1:
|
| 2930 |
|
|
; move.b d1,d0 ; get digit into d0.b
|
| 2931 |
|
|
; andi.w #$0f,d0
|
| 2932 |
|
|
; cmpi.w #$09,d0
|
| 2933 |
|
|
; bls.s disphnum2
|
| 2934 |
|
|
; addi.w #7,d0
|
| 2935 |
|
|
;disphnum2:
|
| 2936 |
|
|
; addi.w #$30,d0 ; convert to display char
|
| 2937 |
|
|
; move.w d2,d3 ; char count into d3
|
| 2938 |
|
|
; asl.w #3,d3 ; scale * 8
|
| 2939 |
|
|
;disphnum3:
|
| 2940 |
|
|
; move.w $42C(a6),d4 ; read character queue index into d4
|
| 2941 |
|
|
; cmp.w #28,d4 ; allow up 28 entries to be in progress
|
| 2942 |
|
|
; bhs.s disphnum3 ; branch if too many chars queued
|
| 2943 |
|
|
; ext.w d0 ; zero out high order bits
|
| 2944 |
|
|
; move.w d0,$420(a6) ; set char code
|
| 2945 |
|
|
; move.w #WHITE,$422(a6) ; set fg color
|
| 2946 |
|
|
; move.w #DARK_BLUE,$424(a6) ; set bk color
|
| 2947 |
|
|
; move.w d3,$426(a6) ; set x pos
|
| 2948 |
|
|
; move.w #8,$428(a6) ; set y pos
|
| 2949 |
|
|
; move.w #$0707,$42A(a6) ; set font x,y extent
|
| 2950 |
|
|
; move.w #0,$42E(a6) ; pulse character queue write signal
|
| 2951 |
|
|
; ror.l #4,d1 ; rot to next digit
|
| 2952 |
|
|
; dbeq d2,disphnum1
|
| 2953 |
|
|
; jmp (a5)
|
| 2954 |
|
|
|
| 2955 |
|
|
;===============================================================================
|
| 2956 |
|
|
; Perform ram test. (Uses checkerboard testing).
|
| 2957 |
|
|
;
|
| 2958 |
|
|
; Local ram, which does not get tested, is used for the stack.
|
| 2959 |
|
|
;===============================================================================
|
| 2960 |
|
|
|
| 2961 |
|
|
DisplayAddr:
|
| 2962 |
|
|
move.l a0,d1
|
| 2963 |
|
|
lsr.l #8,d1
|
| 2964 |
|
|
lsr.l #8,d1
|
| 2965 |
|
|
lsr.l #4,d1
|
| 2966 |
|
|
subi.w #512,d1
|
| 2967 |
|
|
bin2bcd d1
|
| 2968 |
|
|
bsr DisplayWyde
|
| 2969 |
|
|
move.b #CR,d1
|
| 2970 |
|
|
bra DisplayChar
|
| 2971 |
|
|
btst #$83,d0
|
| 2972 |
|
|
|
| 2973 |
|
|
cmdTestRAM:
|
| 2974 |
|
|
ramtest:
|
| 2975 |
|
|
move.w #$A5A5,leds ; diagnostics
|
| 2976 |
|
|
move.l #$aaaaaaaa,d3
|
| 2977 |
|
|
move.l #$55555555,d4
|
| 2978 |
|
|
bsr ramtest0
|
| 2979 |
|
|
; switch checkerboard pattern and repeat test.
|
| 2980 |
|
|
exg d3,d4
|
| 2981 |
|
|
bsr ramtest0
|
| 2982 |
|
|
; Save last ram address in end of memory pointer.
|
| 2983 |
|
|
rmtst5:
|
| 2984 |
|
|
moveq #37,d0 ; lock semaphore
|
| 2985 |
|
|
moveq #MEMORY_SEMA,d1
|
| 2986 |
|
|
trap #15
|
| 2987 |
|
|
move.l a0,memend
|
| 2988 |
|
|
; Create very first memory block.
|
| 2989 |
|
|
suba.l #12,a0
|
| 2990 |
|
|
move.l a0,$20000004 ; length of block
|
| 2991 |
|
|
move.l #$46524545,$20000000
|
| 2992 |
|
|
moveq #38,d0 ; unlock semaphore
|
| 2993 |
|
|
moveq #MEMORY_SEMA,d1
|
| 2994 |
|
|
trap #15
|
| 2995 |
|
|
rts
|
| 2996 |
|
|
|
| 2997 |
|
|
ramtest0:
|
| 2998 |
|
|
move.l d3,d0
|
| 2999 |
|
|
movea.l #$20000000,a0
|
| 3000 |
|
|
;-----------------------------------------------------------
|
| 3001 |
|
|
; Write checkerboard pattern to ram then read it back to
|
| 3002 |
|
|
; find the highest usable ram address (maybe). This address
|
| 3003 |
|
|
; must be lower than the start of the rom (0xe00000).
|
| 3004 |
|
|
;-----------------------------------------------------------
|
| 3005 |
|
|
ramtest1:
|
| 3006 |
|
|
move.l d3,(a0)+
|
| 3007 |
|
|
move.l d4,(a0)+
|
| 3008 |
|
|
move.l a0,d1
|
| 3009 |
|
|
tst.w d1
|
| 3010 |
|
|
bne.s rmtst1
|
| 3011 |
|
|
bsr DisplayAddr
|
| 3012 |
|
|
bsr CheckForCtrlC
|
| 3013 |
|
|
rmtst1:
|
| 3014 |
|
|
cmpa.l #$3FFFFFF8,a0
|
| 3015 |
|
|
blo.s ramtest1
|
| 3016 |
|
|
bsr CRLF
|
| 3017 |
|
|
;------------------------------------------------------
|
| 3018 |
|
|
; Save maximum useable address for later comparison.
|
| 3019 |
|
|
;------------------------------------------------------
|
| 3020 |
|
|
ramtest6:
|
| 3021 |
|
|
move.w #$A7A7,leds ; diagnostics
|
| 3022 |
|
|
movea.l a0,a2
|
| 3023 |
|
|
movea.l #$20000000,a0
|
| 3024 |
|
|
;--------------------------------------------
|
| 3025 |
|
|
; Read back checkerboard pattern from ram.
|
| 3026 |
|
|
;--------------------------------------------
|
| 3027 |
|
|
ramtest2
|
| 3028 |
|
|
move.l (a0)+,d5
|
| 3029 |
|
|
move.l (a0)+,d6
|
| 3030 |
|
|
cmpa.l a2,a0
|
| 3031 |
|
|
bhs.s ramtest3
|
| 3032 |
|
|
move.l a0,d1
|
| 3033 |
|
|
tst.w d1
|
| 3034 |
|
|
bne.s rmtst2
|
| 3035 |
|
|
bsr DisplayAddr
|
| 3036 |
|
|
bsr CheckForCtrlC
|
| 3037 |
|
|
rmtst2
|
| 3038 |
|
|
cmp.l d3,d5
|
| 3039 |
|
|
bne.s rmtst3
|
| 3040 |
|
|
cmp.l d4,d6
|
| 3041 |
|
|
beq.s ramtest2
|
| 3042 |
|
|
;----------------------------------
|
| 3043 |
|
|
; Report error in ram.
|
| 3044 |
|
|
;----------------------------------
|
| 3045 |
|
|
rmtst3
|
| 3046 |
|
|
bsr CRLF
|
| 3047 |
|
|
moveq #'E',d1
|
| 3048 |
|
|
bsr DisplayChar
|
| 3049 |
|
|
bsr DisplaySpace
|
| 3050 |
|
|
move.l a0,d1
|
| 3051 |
|
|
bsr DisplayTetra
|
| 3052 |
|
|
bsr DisplaySpace
|
| 3053 |
|
|
move.l d5,d1
|
| 3054 |
|
|
bsr DisplayTetra
|
| 3055 |
|
|
bsr CheckForCtrlC
|
| 3056 |
|
|
bra ramtest2
|
| 3057 |
|
|
ramtest3
|
| 3058 |
|
|
rts
|
| 3059 |
|
|
|
| 3060 |
|
|
;==============================================================================
|
| 3061 |
|
|
; Load an S19 format file
|
| 3062 |
|
|
;==============================================================================
|
| 3063 |
|
|
|
| 3064 |
|
|
cmdLoadS19:
|
| 3065 |
|
|
bsr CRLF
|
| 3066 |
|
|
bra ProcessRec
|
| 3067 |
|
|
NextRec:
|
| 3068 |
|
|
bsr sGetChar
|
| 3069 |
|
|
cmpi.b #LF,d1
|
| 3070 |
|
|
bne NextRec
|
| 3071 |
|
|
move.b #'.',d1
|
| 3072 |
|
|
bsr DisplayChar
|
| 3073 |
|
|
ProcessRec:
|
| 3074 |
|
|
bsr CheckForCtrlC ; check for CTRL-C once per record
|
| 3075 |
|
|
bsr sGetChar
|
| 3076 |
|
|
cmpi.b #CR,d1
|
| 3077 |
|
|
beq.s ProcessRec
|
| 3078 |
|
|
clr.b S19Checksum
|
| 3079 |
|
|
move.b d1,d4
|
| 3080 |
|
|
cmpi.b #CTRLZ,d4 ; CTRL-Z ?
|
| 3081 |
|
|
beq Monitor
|
| 3082 |
|
|
cmpi.b #'S',d4 ; All records must begin with an 'S'
|
| 3083 |
|
|
bne.s NextRec
|
| 3084 |
|
|
bsr sGetChar
|
| 3085 |
|
|
move.b d1,d4
|
| 3086 |
|
|
cmpi.b #'0',d4 ; Record type must be between '0' and '9'
|
| 3087 |
|
|
blo.s NextRec
|
| 3088 |
|
|
cmpi.b #'9',d4 ; d4 = record type
|
| 3089 |
|
|
bhi.s NextRec
|
| 3090 |
|
|
bsr sGetChar ; get byte count for record
|
| 3091 |
|
|
bsr AsciiToHexNybble
|
| 3092 |
|
|
move.b d1,d2
|
| 3093 |
|
|
bsr sGetChar
|
| 3094 |
|
|
bsr AsciiToHexNybble
|
| 3095 |
|
|
lsl.b #4,d2
|
| 3096 |
|
|
or.b d2,d1 ; d1 = byte count
|
| 3097 |
|
|
move.b d1,d3 ; d3 = byte count
|
| 3098 |
|
|
add.b d3,S19Checksum
|
| 3099 |
|
|
cmpi.b #'0',d4 ; manufacturer ID record, ignore
|
| 3100 |
|
|
beq NextRec
|
| 3101 |
|
|
cmpi.b #'1',d4
|
| 3102 |
|
|
beq ProcessS1
|
| 3103 |
|
|
cmpi.b #'2',d4
|
| 3104 |
|
|
beq ProcessS2
|
| 3105 |
|
|
cmpi.b #'3',d4
|
| 3106 |
|
|
beq ProcessS3
|
| 3107 |
|
|
cmpi.b #'5',d4 ; record count record, ignore
|
| 3108 |
|
|
beq NextRec
|
| 3109 |
|
|
cmpi.b #'7',d4
|
| 3110 |
|
|
beq ProcessS7
|
| 3111 |
|
|
cmpi.b #'8',d4
|
| 3112 |
|
|
beq ProcessS8
|
| 3113 |
|
|
cmpi.b #'9',d4
|
| 3114 |
|
|
beq ProcessS9
|
| 3115 |
|
|
bra NextRec
|
| 3116 |
|
|
|
| 3117 |
|
|
pcssxa:
|
| 3118 |
|
|
move.l a1,d1
|
| 3119 |
|
|
bsr DisplayTetra
|
| 3120 |
|
|
move.b #CR,d1
|
| 3121 |
|
|
bsr DisplayChar
|
| 3122 |
|
|
andi.w #$ff,d3
|
| 3123 |
|
|
subi.w #1,d3 ; one less for dbra
|
| 3124 |
|
|
.0001:
|
| 3125 |
|
|
clr.l d2
|
| 3126 |
|
|
bsr sGetChar
|
| 3127 |
|
|
bsr AsciiToHexNybble
|
| 3128 |
|
|
lsl.l #4,d2
|
| 3129 |
|
|
or.b d1,d2
|
| 3130 |
|
|
bsr sGetChar
|
| 3131 |
|
|
bsr AsciiToHexNybble
|
| 3132 |
|
|
lsl.l #4,d2
|
| 3133 |
|
|
or.b d1,d2
|
| 3134 |
|
|
add.b d2,S19Checksum
|
| 3135 |
|
|
move.b d2,(a1)+ ; move byte to memory
|
| 3136 |
|
|
dbra d3,.0001
|
| 3137 |
|
|
; Get the checksum byte
|
| 3138 |
|
|
clr.l d2
|
| 3139 |
|
|
bsr sGetChar
|
| 3140 |
|
|
bsr AsciiToHexNybble
|
| 3141 |
|
|
lsl.l #4,d2
|
| 3142 |
|
|
or.b d1,d2
|
| 3143 |
|
|
bsr sGetChar
|
| 3144 |
|
|
bsr AsciiToHexNybble
|
| 3145 |
|
|
lsl.l #4,d2
|
| 3146 |
|
|
or.b d1,d2
|
| 3147 |
|
|
eor.b #$FF,d2
|
| 3148 |
|
|
cmp.b S19Checksum,d2
|
| 3149 |
|
|
beq NextRec
|
| 3150 |
|
|
move.b #'E',d1
|
| 3151 |
|
|
bsr DisplayChar
|
| 3152 |
|
|
bra NextRec
|
| 3153 |
|
|
|
| 3154 |
|
|
ProcessS1:
|
| 3155 |
|
|
bsr S19Get16BitAddress
|
| 3156 |
|
|
bra pcssxa
|
| 3157 |
|
|
ProcessS2:
|
| 3158 |
|
|
bsr S19Get24BitAddress
|
| 3159 |
|
|
bra pcssxa
|
| 3160 |
|
|
ProcessS3:
|
| 3161 |
|
|
bsr S19Get32BitAddress
|
| 3162 |
|
|
bra pcssxa
|
| 3163 |
|
|
ProcessS7:
|
| 3164 |
|
|
bsr S19Get32BitAddress
|
| 3165 |
|
|
move.l a1,S19StartAddress
|
| 3166 |
|
|
bsr _KeybdInit
|
| 3167 |
|
|
bra Monitor
|
| 3168 |
|
|
ProcessS8:
|
| 3169 |
|
|
bsr S19Get24BitAddress
|
| 3170 |
|
|
move.l a1,S19StartAddress
|
| 3171 |
|
|
bsr _KeybdInit
|
| 3172 |
|
|
bra Monitor
|
| 3173 |
|
|
ProcessS9:
|
| 3174 |
|
|
bsr S19Get16BitAddress
|
| 3175 |
|
|
move.l a1,S19StartAddress
|
| 3176 |
|
|
bsr _KeybdInit
|
| 3177 |
|
|
bra Monitor
|
| 3178 |
|
|
|
| 3179 |
|
|
S19Get16BitAddress:
|
| 3180 |
|
|
clr.l d2
|
| 3181 |
|
|
bsr sGetChar
|
| 3182 |
|
|
bsr AsciiToHexNybble
|
| 3183 |
|
|
move.b d1,d2
|
| 3184 |
|
|
bra S1932b
|
| 3185 |
|
|
|
| 3186 |
|
|
S19Get24BitAddress:
|
| 3187 |
|
|
clr.l d2
|
| 3188 |
|
|
bsr sGetChar
|
| 3189 |
|
|
bsr AsciiToHexNybble
|
| 3190 |
|
|
move.b d1,d2
|
| 3191 |
|
|
bra S1932a
|
| 3192 |
|
|
|
| 3193 |
|
|
S19Get32BitAddress:
|
| 3194 |
|
|
clr.l d2
|
| 3195 |
|
|
bsr sGetChar
|
| 3196 |
|
|
bsr AsciiToHexNybble
|
| 3197 |
|
|
move.b d1,d2
|
| 3198 |
|
|
bsr sGetChar
|
| 3199 |
|
|
bsr AsciiToHexNybble
|
| 3200 |
|
|
lsl.l #4,d2
|
| 3201 |
|
|
or.b d1,d2
|
| 3202 |
|
|
bsr sGetChar
|
| 3203 |
|
|
bsr AsciiToHexNybble
|
| 3204 |
|
|
lsl.l #4,d2
|
| 3205 |
|
|
or.b d1,d2
|
| 3206 |
|
|
S1932a:
|
| 3207 |
|
|
bsr sGetChar
|
| 3208 |
|
|
bsr AsciiToHexNybble
|
| 3209 |
|
|
lsl.l #4,d2
|
| 3210 |
|
|
or.b d1,d2
|
| 3211 |
|
|
bsr sGetChar
|
| 3212 |
|
|
bsr AsciiToHexNybble
|
| 3213 |
|
|
lsl.l #4,d2
|
| 3214 |
|
|
or.b d1,d2
|
| 3215 |
|
|
S1932b:
|
| 3216 |
|
|
bsr sGetChar
|
| 3217 |
|
|
bsr AsciiToHexNybble
|
| 3218 |
|
|
lsl.l #4,d2
|
| 3219 |
|
|
or.b d1,d2
|
| 3220 |
|
|
bsr sGetChar
|
| 3221 |
|
|
bsr AsciiToHexNybble
|
| 3222 |
|
|
lsl.l #4,d2
|
| 3223 |
|
|
or.b d1,d2
|
| 3224 |
|
|
bsr sGetChar
|
| 3225 |
|
|
bsr AsciiToHexNybble
|
| 3226 |
|
|
lsl.l #4,d2
|
| 3227 |
|
|
or.b d1,d2
|
| 3228 |
|
|
clr.l d4
|
| 3229 |
|
|
move.l d2,a1
|
| 3230 |
|
|
; Add bytes from address value to checksum
|
| 3231 |
|
|
add.b d2,S19Checksum
|
| 3232 |
|
|
lsr.l #8,d2
|
| 3233 |
|
|
add.b d2,S19Checksum
|
| 3234 |
|
|
lsr.l #8,d2
|
| 3235 |
|
|
add.b d2,S19Checksum
|
| 3236 |
|
|
lsr.l #8,d2
|
| 3237 |
|
|
add.b d2,S19Checksum
|
| 3238 |
|
|
rts
|
| 3239 |
|
|
|
| 3240 |
|
|
;------------------------------------------------------------------------------
|
| 3241 |
|
|
; Get a character from auxillary input. Waiting for a character is limited to
|
| 3242 |
|
|
; 32000 tries. If a character is not available within the limit, then a return
|
| 3243 |
|
|
; to the monitor is done.
|
| 3244 |
|
|
;
|
| 3245 |
|
|
; Parameters:
|
| 3246 |
|
|
; none
|
| 3247 |
|
|
; Returns:
|
| 3248 |
|
|
; d1 = character from receive buffer or -1 if no char available
|
| 3249 |
|
|
;------------------------------------------------------------------------------
|
| 3250 |
|
|
|
| 3251 |
|
|
sGetChar:
|
| 3252 |
|
|
movem.l d0/d2,-(a7)
|
| 3253 |
|
|
move.w #32000,d2
|
| 3254 |
|
|
.0001:
|
| 3255 |
|
|
moveq #36,d0 ; serial get char from buffer
|
| 3256 |
|
|
trap #15
|
| 3257 |
|
|
tst.w d1 ; was there a char available?
|
| 3258 |
|
|
bpl.s .0002
|
| 3259 |
|
|
dbra d2,.0001 ; no - try again
|
| 3260 |
|
|
movem.l (a7)+,d0/d2
|
| 3261 |
|
|
.0003:
|
| 3262 |
|
|
bsr _KeybdInit
|
| 3263 |
|
|
bra Monitor ; ran out of tries
|
| 3264 |
|
|
.0002:
|
| 3265 |
|
|
movem.l (a7)+,d0/d2
|
| 3266 |
|
|
cmpi.b #CTRLZ,d1 ; receive end of file?
|
| 3267 |
|
|
beq .0003
|
| 3268 |
|
|
rts
|
| 3269 |
|
|
|
| 3270 |
|
|
AudioInputTest:
|
| 3271 |
|
|
rts
|
| 3272 |
|
|
BouncingBalls:
|
| 3273 |
|
|
rts
|
| 3274 |
|
|
GraphicsDemo:
|
| 3275 |
|
|
rts
|
| 3276 |
|
|
ClearScreen:
|
| 3277 |
|
|
bra clear_screen
|
| 3278 |
|
|
rts
|
| 3279 |
|
|
|
| 3280 |
|
|
;------------------------------------------------------------------------------
|
| 3281 |
|
|
; Reverse the order of bytes in d1.
|
| 3282 |
|
|
;------------------------------------------------------------------------------
|
| 3283 |
|
|
|
| 3284 |
|
|
rbo:
|
| 3285 |
|
|
rol.w #8,d1
|
| 3286 |
|
|
swap d1
|
| 3287 |
|
|
rol.w #8,d1
|
| 3288 |
|
|
rts
|
| 3289 |
|
|
|
| 3290 |
|
|
;==============================================================================
|
| 3291 |
|
|
; Serial I/O routines
|
| 3292 |
|
|
;==============================================================================
|
| 3293 |
|
|
|
| 3294 |
|
|
;------------------------------------------------------------------------------
|
| 3295 |
|
|
; Initialize the serial port an enhanced 6551 circuit.
|
| 3296 |
|
|
;
|
| 3297 |
|
|
; Select internal baud rate clock divider for 9600 baud
|
| 3298 |
|
|
; Reset fifos, set threshold to 3/4 full on transmit and 3/4 empty on receive
|
| 3299 |
|
|
; Note that the byte order is swapped.
|
| 3300 |
|
|
;------------------------------------------------------------------------------
|
| 3301 |
|
|
|
| 3302 |
|
|
SerialInit:
|
| 3303 |
|
|
clr.w SerHeadRcv ; clear receive buffer indexes
|
| 3304 |
|
|
clr.w SerTailRcv
|
| 3305 |
|
|
clr.b SerRcvXon ; and Xon,Xoff flags
|
| 3306 |
|
|
clr.b SerRcvXoff
|
| 3307 |
|
|
move.l #$09000000,d0 ; dtr,rts active, rxint enabled, no parity
|
| 3308 |
|
|
move.l d0,ACIA+ACIA_CMD
|
| 3309 |
|
|
; move.l #$1E00F700,d0 ; fifos enabled
|
| 3310 |
|
|
move.l #$1E000000,d0 ; fifos disabled
|
| 3311 |
|
|
move.l d0,ACIA+ACIA_CTRL
|
| 3312 |
|
|
rts
|
| 3313 |
|
|
; move.l #$0F000000,d0 ; transmit a break for a while
|
| 3314 |
|
|
; move.l d0,ACIA+ACIA_CMD
|
| 3315 |
|
|
; move.l #300000,d2 ; wait 100 ms
|
| 3316 |
|
|
; bra .0001
|
| 3317 |
|
|
;.0003:
|
| 3318 |
|
|
; swap d2
|
| 3319 |
|
|
;.0001:
|
| 3320 |
|
|
; nop
|
| 3321 |
|
|
; dbra d2,.0001
|
| 3322 |
|
|
;.0002:
|
| 3323 |
|
|
; swap d2
|
| 3324 |
|
|
; dbra d2,.0003
|
| 3325 |
|
|
; move.l #$07000000,d0 ; clear break
|
| 3326 |
|
|
; move.l d0,ACIA+ACIA_CMD
|
| 3327 |
|
|
; rts
|
| 3328 |
|
|
|
| 3329 |
|
|
;------------------------------------------------------------------------------
|
| 3330 |
|
|
; SerialGetChar
|
| 3331 |
|
|
;
|
| 3332 |
|
|
; Check the serial port buffer to see if there's a char available. If there's
|
| 3333 |
|
|
; a char available then return it. If the buffer is almost empty then send an
|
| 3334 |
|
|
; XON.
|
| 3335 |
|
|
;
|
| 3336 |
|
|
; Stack Space:
|
| 3337 |
|
|
; 2 long words
|
| 3338 |
|
|
; Parameters:
|
| 3339 |
|
|
; none
|
| 3340 |
|
|
; Modifies:
|
| 3341 |
|
|
; d0,a0
|
| 3342 |
|
|
; Returns:
|
| 3343 |
|
|
; d1 = character or -1
|
| 3344 |
|
|
;------------------------------------------------------------------------------
|
| 3345 |
|
|
|
| 3346 |
|
|
SerialGetChar:
|
| 3347 |
|
|
move.l d2,-(a7)
|
| 3348 |
|
|
movec coreno,d0
|
| 3349 |
|
|
swap d0
|
| 3350 |
|
|
moveq #SERIAL_SEMA,d1
|
| 3351 |
|
|
bsr LockSemaphore
|
| 3352 |
|
|
bsr SerialRcvCount ; check number of chars in receive buffer
|
| 3353 |
|
|
cmpi.w #8,d0 ; less than 8?
|
| 3354 |
|
|
bhi .sgc2
|
| 3355 |
|
|
tst.b SerRcvXon ; skip sending XON if already sent
|
| 3356 |
|
|
bne .sgc2 ; XON already sent?
|
| 3357 |
|
|
move.b #XON,d1 ; if <8 send an XON
|
| 3358 |
|
|
clr.b SerRcvXoff ; clear XOFF status
|
| 3359 |
|
|
move.b d1,SerRcvXon ; flag so we don't send it multiple times
|
| 3360 |
|
|
bsr SerialPutChar ; send it
|
| 3361 |
|
|
.sgc2:
|
| 3362 |
|
|
move.w SerHeadRcv,d1 ; check if anything is in buffer
|
| 3363 |
|
|
cmp.w SerTailRcv,d1
|
| 3364 |
|
|
beq .NoChars ; no?
|
| 3365 |
|
|
lea SerRcvBuf,a0
|
| 3366 |
|
|
move.b (a0,d1.w),d1 ; get byte from buffer
|
| 3367 |
|
|
addi.w #1,SerHeadRcv
|
| 3368 |
|
|
andi.w #$FFF,SerHeadRcv ; 4k wrap around
|
| 3369 |
|
|
andi.l #$FF,d1
|
| 3370 |
|
|
bra .Xit
|
| 3371 |
|
|
.NoChars:
|
| 3372 |
|
|
moveq #-1,d1
|
| 3373 |
|
|
.Xit:
|
| 3374 |
|
|
exg d1,d2
|
| 3375 |
|
|
movec coreno,d0
|
| 3376 |
|
|
swap d0
|
| 3377 |
|
|
moveq #SERIAL_SEMA,d1
|
| 3378 |
|
|
bsr UnlockSemaphore
|
| 3379 |
|
|
exg d2,d1
|
| 3380 |
|
|
move.l (a7)+,d2
|
| 3381 |
|
|
rts
|
| 3382 |
|
|
|
| 3383 |
|
|
;------------------------------------------------------------------------------
|
| 3384 |
|
|
; SerialPeekChar
|
| 3385 |
|
|
;
|
| 3386 |
|
|
; Check the serial port buffer to see if there's a char available. If there's
|
| 3387 |
|
|
; a char available then return it. But don't update the buffer indexes. No need
|
| 3388 |
|
|
; to send an XON here.
|
| 3389 |
|
|
;
|
| 3390 |
|
|
; Stack Space:
|
| 3391 |
|
|
; 0 words
|
| 3392 |
|
|
; Parameters:
|
| 3393 |
|
|
; none
|
| 3394 |
|
|
; Modifies:
|
| 3395 |
|
|
; d0,d2,a0
|
| 3396 |
|
|
; Returns:
|
| 3397 |
|
|
; d1 = character or -1
|
| 3398 |
|
|
;------------------------------------------------------------------------------
|
| 3399 |
|
|
|
| 3400 |
|
|
SerialPeekChar:
|
| 3401 |
|
|
movec coreno,d0
|
| 3402 |
|
|
swap d0
|
| 3403 |
|
|
moveq #SERIAL_SEMA,d1
|
| 3404 |
|
|
bsr LockSemaphore
|
| 3405 |
|
|
move.w SerHeadRcv,d2 ; check if anything is in buffer
|
| 3406 |
|
|
cmp.w SerTailRcv,d2
|
| 3407 |
|
|
beq .NoChars ; no?
|
| 3408 |
|
|
lea SerRcvBuf,a0
|
| 3409 |
|
|
move.b (a0,d2.w),d2 ; get byte from buffer
|
| 3410 |
|
|
bra .Xit
|
| 3411 |
|
|
.NoChars:
|
| 3412 |
|
|
moveq #-1,d2
|
| 3413 |
|
|
.Xit:
|
| 3414 |
|
|
movec coreno,d0
|
| 3415 |
|
|
swap d0
|
| 3416 |
|
|
moveq #SERIAL_SEMA,d1
|
| 3417 |
|
|
bsr LockSemaphore
|
| 3418 |
|
|
move d2,d1
|
| 3419 |
|
|
rts
|
| 3420 |
|
|
|
| 3421 |
|
|
;------------------------------------------------------------------------------
|
| 3422 |
|
|
; SerialPeekChar
|
| 3423 |
|
|
; Get a character directly from the I/O port. This bypasses the input
|
| 3424 |
|
|
; buffer.
|
| 3425 |
|
|
;
|
| 3426 |
|
|
; Stack Space:
|
| 3427 |
|
|
; 0 words
|
| 3428 |
|
|
; Parameters:
|
| 3429 |
|
|
; none
|
| 3430 |
|
|
; Modifies:
|
| 3431 |
|
|
; d
|
| 3432 |
|
|
; Returns:
|
| 3433 |
|
|
; d1 = character or -1
|
| 3434 |
|
|
;------------------------------------------------------------------------------
|
| 3435 |
|
|
|
| 3436 |
|
|
SerialPeekCharDirect:
|
| 3437 |
|
|
move.b ACIA+ACIA_STAT,d1 ; get serial status
|
| 3438 |
|
|
btst #3,d1 ; look for Rx not empty
|
| 3439 |
|
|
beq.s .0001
|
| 3440 |
|
|
moveq.l #0,d1 ; clear upper bits of return value
|
| 3441 |
|
|
move.b ACIA+ACIA_RX,d1 ; get data from ACIA
|
| 3442 |
|
|
rts ; return
|
| 3443 |
|
|
.0001:
|
| 3444 |
|
|
moveq #-1,d1
|
| 3445 |
|
|
rts
|
| 3446 |
|
|
|
| 3447 |
|
|
;------------------------------------------------------------------------------
|
| 3448 |
|
|
; SerialPutChar
|
| 3449 |
|
|
; Put a character to the serial transmitter. This routine blocks until the
|
| 3450 |
|
|
; transmitter is empty.
|
| 3451 |
|
|
;
|
| 3452 |
|
|
; Stack Space
|
| 3453 |
|
|
; 0 words
|
| 3454 |
|
|
; Parameters:
|
| 3455 |
|
|
; d1.b = character to put
|
| 3456 |
|
|
; Modifies:
|
| 3457 |
|
|
; none
|
| 3458 |
|
|
;------------------------------------------------------------------------------
|
| 3459 |
|
|
|
| 3460 |
|
|
SerialPutChar:
|
| 3461 |
|
|
movem.l d0/d1,-(a7) ; push d0,d1
|
| 3462 |
|
|
.0001:
|
| 3463 |
|
|
move.b ACIA+ACIA_STAT,d0 ; wait until the uart indicates tx empty
|
| 3464 |
|
|
btst #4,d0 ; bit #4 of the status reg
|
| 3465 |
|
|
beq.s .0001 ; branch if transmitter is not empty
|
| 3466 |
|
|
move.b d1,ACIA+ACIA_TX ; send the byte
|
| 3467 |
|
|
movem.l (a7)+,d0/d1 ; pop d0,d1
|
| 3468 |
|
|
rts
|
| 3469 |
|
|
|
| 3470 |
|
|
;------------------------------------------------------------------------------
|
| 3471 |
|
|
; Reverse the order of bytes in d1.
|
| 3472 |
|
|
;------------------------------------------------------------------------------
|
| 3473 |
|
|
|
| 3474 |
|
|
SerialRbo:
|
| 3475 |
|
|
rol.w #8,d1
|
| 3476 |
|
|
swap d1
|
| 3477 |
|
|
rol.w #8,d1
|
| 3478 |
|
|
rts
|
| 3479 |
|
|
|
| 3480 |
|
|
;------------------------------------------------------------------------------
|
| 3481 |
|
|
; Calculate number of character in input buffer
|
| 3482 |
|
|
;
|
| 3483 |
|
|
; Returns:
|
| 3484 |
|
|
; d0 = number of bytes in buffer.
|
| 3485 |
|
|
;------------------------------------------------------------------------------
|
| 3486 |
|
|
|
| 3487 |
|
|
SerialRcvCount:
|
| 3488 |
|
|
move.w SerTailRcv,d0
|
| 3489 |
|
|
sub.w SerHeadRcv,d0
|
| 3490 |
|
|
bge .0001
|
| 3491 |
|
|
move.w #$1000,d0
|
| 3492 |
|
|
sub.w SerHeadRcv,d0
|
| 3493 |
|
|
add.w SerTailRcv,d0
|
| 3494 |
|
|
.0001:
|
| 3495 |
|
|
rts
|
| 3496 |
|
|
|
| 3497 |
|
|
;------------------------------------------------------------------------------
|
| 3498 |
|
|
; Serial IRQ routine
|
| 3499 |
|
|
;
|
| 3500 |
|
|
; Keeps looping as long as it finds characters in the ACIA recieve buffer/fifo.
|
| 3501 |
|
|
; Received characters are buffered. If the buffer becomes full, new characters
|
| 3502 |
|
|
; will be lost.
|
| 3503 |
|
|
;
|
| 3504 |
|
|
; Parameters:
|
| 3505 |
|
|
; none
|
| 3506 |
|
|
; Modifies:
|
| 3507 |
|
|
; none
|
| 3508 |
|
|
; Returns:
|
| 3509 |
|
|
; d1 = -1 if IRQ handled, otherwise zero
|
| 3510 |
|
|
;------------------------------------------------------------------------------
|
| 3511 |
|
|
|
| 3512 |
|
|
SerialIRQ:
|
| 3513 |
|
|
move.w #$2300,sr ; disable lower level IRQs
|
| 3514 |
|
|
movem.l d0/d1/d2/a0,-(a7)
|
| 3515 |
|
|
movec coreno,d0
|
| 3516 |
|
|
swap d0
|
| 3517 |
|
|
moveq #SERIAL_SEMA,d1
|
| 3518 |
|
|
bsr LockSemaphore
|
| 3519 |
|
|
sirqNxtByte:
|
| 3520 |
|
|
move.b ACIA+ACIA_STAT,d1 ; check the status
|
| 3521 |
|
|
btst #3,d1 ; bit 3 = rx full
|
| 3522 |
|
|
beq notRxInt
|
| 3523 |
|
|
move.b ACIA+ACIA_RX,d1
|
| 3524 |
|
|
sirq0001:
|
| 3525 |
|
|
move.w SerTailRcv,d0 ; check if recieve buffer full
|
| 3526 |
|
|
addi.w #1,d0
|
| 3527 |
|
|
andi.w #$FFF,d0
|
| 3528 |
|
|
cmp.w SerHeadRcv,d0
|
| 3529 |
|
|
beq sirqRxFull
|
| 3530 |
|
|
move.w d0,SerTailRcv ; update tail pointer
|
| 3531 |
|
|
subi.w #1,d0 ; backup
|
| 3532 |
|
|
andi.w #$FFF,d0
|
| 3533 |
|
|
lea SerRcvBuf,a0 ; a0 = buffer address
|
| 3534 |
|
|
move.b d1,(a0,d0.w) ; store recieved byte in buffer
|
| 3535 |
|
|
tst.b SerRcvXoff ; check if xoff already sent
|
| 3536 |
|
|
bne sirqNxtByte
|
| 3537 |
|
|
bsr SerialRcvCount ; if more than 4080 chars in buffer
|
| 3538 |
|
|
cmpi.w #4080,d0
|
| 3539 |
|
|
blo sirqNxtByte
|
| 3540 |
|
|
move.b #XOFF,d1 ; send an XOFF
|
| 3541 |
|
|
clr.b SerRcvXon ; clear XON status
|
| 3542 |
|
|
move.b d1,SerRcvXoff ; set XOFF status
|
| 3543 |
|
|
bsr SerialPutChar ; send XOFF
|
| 3544 |
|
|
bra sirqNxtByte ; check the status for another byte
|
| 3545 |
|
|
sirqRxFull:
|
| 3546 |
|
|
notRxInt:
|
| 3547 |
|
|
movec coreno,d0
|
| 3548 |
|
|
swap d0
|
| 3549 |
|
|
moveq #SERIAL_SEMA,d1
|
| 3550 |
|
|
bsr UnlockSemaphore
|
| 3551 |
|
|
movem.l (a7)+,d0/d1/d2/a0
|
| 3552 |
|
|
rte
|
| 3553 |
|
|
|
| 3554 |
|
|
nmeSerial:
|
| 3555 |
|
|
dc.b "Serial",0
|
| 3556 |
|
|
|
| 3557 |
3 |
robfinch |
;===============================================================================
|
| 3558 |
|
|
; Generic I2C routines
|
| 3559 |
|
|
;===============================================================================
|
| 3560 |
2 |
robfinch |
|
| 3561 |
3 |
robfinch |
even
|
| 3562 |
|
|
; i2c
|
| 3563 |
|
|
i2c_setup:
|
| 3564 |
|
|
; lea I2C,a6
|
| 3565 |
|
|
; move.w #19,I2C_PREL(a6) ; setup prescale for 400kHz clock
|
| 3566 |
|
|
; move.w #0,I2C_PREH(a6)
|
| 3567 |
|
|
init_i2c:
|
| 3568 |
|
|
lea I2C2,a6
|
| 3569 |
|
|
move.b #19,I2C_PREL(a6) ; setup prescale for 400kHz clock, 40MHz master
|
| 3570 |
|
|
move.b #0,I2C_PREH(a6)
|
| 3571 |
|
|
rts
|
| 3572 |
|
|
|
| 3573 |
|
|
; Wait for I2C transfer to complete
|
| 3574 |
|
|
;
|
| 3575 |
|
|
; Parameters
|
| 3576 |
|
|
; a6 - I2C controller base address
|
| 3577 |
|
|
|
| 3578 |
|
|
i2c_wait_tip:
|
| 3579 |
|
|
move.l d0,-(a7)
|
| 3580 |
|
|
.0001
|
| 3581 |
|
|
move.b I2C_STAT(a6),d0 ; wait for tip to clear
|
| 3582 |
|
|
btst #1,d0
|
| 3583 |
|
|
bne.s .0001
|
| 3584 |
|
|
move.l (a7)+,d0
|
| 3585 |
|
|
rts
|
| 3586 |
|
|
|
| 3587 |
|
|
; Parameters
|
| 3588 |
|
|
; d0.b - data to transmit
|
| 3589 |
|
|
; d1.b - command value
|
| 3590 |
|
|
; a6 - I2C controller base address
|
| 3591 |
|
|
;
|
| 3592 |
|
|
i2c_wr_cmd:
|
| 3593 |
|
|
move.b d0,I2C_TXR(a6)
|
| 3594 |
|
|
move.b d1,I2C_CMD(a6)
|
| 3595 |
|
|
bsr i2c_wait_tip
|
| 3596 |
|
|
move.b I2C_STAT(a6),d0
|
| 3597 |
|
|
rts
|
| 3598 |
|
|
|
| 3599 |
|
|
i2c_xmit1:
|
| 3600 |
|
|
move.l d0,-(a7)
|
| 3601 |
|
|
move.b #1,I2C_CTRL(a6) ; enable the core
|
| 3602 |
|
|
moveq #$76,d0 ; set slave address = %0111011
|
| 3603 |
|
|
move.w #$90,d1 ; set STA, WR
|
| 3604 |
|
|
bsr i2c_wr_cmd
|
| 3605 |
|
|
bsr i2c_wait_rx_nack
|
| 3606 |
|
|
move.l (a7)+,d0
|
| 3607 |
|
|
move.w #$50,d1 ; set STO, WR
|
| 3608 |
|
|
bsr i2c_wr_cmd
|
| 3609 |
|
|
bsr i2c_wait_rx_nack
|
| 3610 |
|
|
|
| 3611 |
|
|
i2c_wait_rx_nack:
|
| 3612 |
|
|
move.l d0,-(a7)
|
| 3613 |
|
|
.0001
|
| 3614 |
|
|
move.b I2C_STAT(a6),d0 ; wait for RXack = 0
|
| 3615 |
|
|
btst #7,d0
|
| 3616 |
|
|
bne.s .0001
|
| 3617 |
|
|
move.l (a7)+,d0
|
| 3618 |
|
|
rts
|
| 3619 |
|
|
|
| 3620 |
|
|
;===============================================================================
|
| 3621 |
|
|
; Realtime clock routines
|
| 3622 |
|
|
;===============================================================================
|
| 3623 |
|
|
|
| 3624 |
|
|
rtc_read:
|
| 3625 |
|
|
movea.l #I2C2,a6
|
| 3626 |
|
|
lea RTCBuf,a5
|
| 3627 |
|
|
move.b #$80,I2C_CTRL(a6) ; enable I2C
|
| 3628 |
|
|
move.b #$DE,d0 ; read address, write op
|
| 3629 |
|
|
move.b #$90,d1 ; STA + wr bit
|
| 3630 |
|
|
bsr i2c_wr_cmd
|
| 3631 |
|
|
tst.b d0
|
| 3632 |
|
|
bmi .rxerr
|
| 3633 |
|
|
move.b #$00,d0 ; address zero
|
| 3634 |
|
|
move.b #$10,d1 ; wr bit
|
| 3635 |
|
|
bsr i2c_wr_cmd
|
| 3636 |
|
|
tst.b d0
|
| 3637 |
|
|
bmi .rxerr
|
| 3638 |
|
|
move.b #$DF,d0 ; read address, read op
|
| 3639 |
|
|
move.b #$90,d1 ; STA + wr bit
|
| 3640 |
|
|
bsr i2c_wr_cmd
|
| 3641 |
|
|
tst.b d0
|
| 3642 |
|
|
bmi .rxerr
|
| 3643 |
|
|
|
| 3644 |
|
|
move.w #$20,d2
|
| 3645 |
|
|
.0001
|
| 3646 |
|
|
move.b #$20,I2C_CMD(a6) ; rd bit
|
| 3647 |
|
|
bsr i2c_wait_tip
|
| 3648 |
|
|
bsr i2c_wait_rx_nack
|
| 3649 |
|
|
move.b I2C_STAT(a6),d0
|
| 3650 |
|
|
tst.b d0
|
| 3651 |
|
|
bmi .rxerr
|
| 3652 |
|
|
move.b I2C_RXR(a6),d0
|
| 3653 |
|
|
move.b d0,(a5,d2.w)
|
| 3654 |
|
|
addi.w #1,d2
|
| 3655 |
|
|
cmpi.w #$5F,d2
|
| 3656 |
|
|
bne .0001
|
| 3657 |
|
|
move.b #$68,I2C_CMD(a6) ; STO, rd bit + nack
|
| 3658 |
|
|
bsr i2c_wait_tip
|
| 3659 |
|
|
bsr i2c_wait_rx_nack
|
| 3660 |
|
|
move.b I2C_STAT(a6),d0
|
| 3661 |
|
|
tst.b d0
|
| 3662 |
|
|
bmi .rxerr
|
| 3663 |
|
|
move.b I2C_RXR(a6),d0
|
| 3664 |
|
|
move.b d0,(a5,d2.w)
|
| 3665 |
|
|
move.b #0,I2C_CTRL(a6) ; disable I2C and return 0
|
| 3666 |
|
|
moveq #0,d0
|
| 3667 |
|
|
rts
|
| 3668 |
|
|
.rxerr
|
| 3669 |
|
|
move.b #0,I2C_CTRL(a6) ; disable I2C and return status
|
| 3670 |
|
|
rts
|
| 3671 |
|
|
|
| 3672 |
|
|
rtc_write:
|
| 3673 |
|
|
movea.l #I2C2,a6
|
| 3674 |
|
|
lea RTCBuf,a5
|
| 3675 |
|
|
move.b #$80,I2C_CTRL(a6) ; enable I2C
|
| 3676 |
|
|
move.b #$DE,d0 ; read address, write op
|
| 3677 |
|
|
move.b #$90,d1 ; STA + wr bit
|
| 3678 |
|
|
bsr i2c_wr_cmd
|
| 3679 |
|
|
tst.b d0
|
| 3680 |
|
|
bmi .rxerr
|
| 3681 |
|
|
move.b #$00,d0 ; address zero
|
| 3682 |
|
|
move.b #$10,d1 ; wr bit
|
| 3683 |
|
|
bsr i2c_wr_cmd
|
| 3684 |
|
|
tst.b d0
|
| 3685 |
|
|
bmi .rxerr
|
| 3686 |
|
|
move.w #$20,d2
|
| 3687 |
|
|
.0001
|
| 3688 |
|
|
move.b (a5,d2.w),d0
|
| 3689 |
|
|
move.b #$10,d1
|
| 3690 |
|
|
bsr i2c_wr_cmd
|
| 3691 |
|
|
tst.b d0
|
| 3692 |
|
|
bmi .rxerr
|
| 3693 |
|
|
addi.w #1,d2
|
| 3694 |
|
|
cmpi.w #$5F,d2
|
| 3695 |
|
|
bne.s .0001
|
| 3696 |
|
|
move.b (a5,d2.w),d0
|
| 3697 |
|
|
move.b #$50,d1 ; STO, wr bit
|
| 3698 |
|
|
bsr i2c_wr_cmd
|
| 3699 |
|
|
tst.b d0
|
| 3700 |
|
|
bmi .rxerr
|
| 3701 |
|
|
move.b #0,I2C_CTRL(a6) ; disable I2C and return 0
|
| 3702 |
|
|
moveq #0,d0
|
| 3703 |
|
|
rts
|
| 3704 |
|
|
.rxerr:
|
| 3705 |
|
|
move.b #0,I2C_CTRL(a6) ; disable I2C and return status
|
| 3706 |
|
|
rts
|
| 3707 |
|
|
|
| 3708 |
|
|
msgRtcReadFail:
|
| 3709 |
|
|
dc.b "RTC read/write failed.",$0A,$0D,$00
|
| 3710 |
|
|
|
| 3711 |
|
|
even
|
| 3712 |
|
|
|
| 3713 |
2 |
robfinch |
;------------------------------------------------------------------------------
|
| 3714 |
|
|
;------------------------------------------------------------------------------
|
| 3715 |
|
|
even
|
| 3716 |
|
|
|
| 3717 |
|
|
bus_err:
|
| 3718 |
|
|
.0001:
|
| 3719 |
|
|
nop
|
| 3720 |
|
|
bra .0001
|
| 3721 |
|
|
|
| 3722 |
|
|
trap3:
|
| 3723 |
|
|
; First save all registers
|
| 3724 |
|
|
movem.l d0/d1/d2/d3/d4/d5/d6/d7/a0/a1/a2/a3/a4/a5/a6/a7,Regsave
|
| 3725 |
|
|
move.w (a7)+,Regsave+$40
|
| 3726 |
|
|
move.l (a7)+,Regsave+$44
|
| 3727 |
|
|
move.l #$40FFC,a7 ; reset stack pointer
|
| 3728 |
|
|
move.w #$2500,sr ; enable interrupts
|
| 3729 |
|
|
move.w NumSetBreakpoints,d0
|
| 3730 |
|
|
subi.w #1,d0
|
| 3731 |
|
|
lea Breakpoints,a0
|
| 3732 |
|
|
move.l Regsave+$44,d1
|
| 3733 |
|
|
.0001:
|
| 3734 |
|
|
cmp.l (a0)+,d1
|
| 3735 |
|
|
beq.s ProcessBreakpoint
|
| 3736 |
|
|
dbra d0,.0001
|
| 3737 |
|
|
bra Monitor ; not a breakpoint
|
| 3738 |
|
|
ProcessBreakpoint:
|
| 3739 |
|
|
bsr DisarmAllBreakpoints
|
| 3740 |
|
|
bra cmdDumpRegs
|
| 3741 |
|
|
|
| 3742 |
|
|
;------------------------------------------------------------------------------
|
| 3743 |
|
|
; DisarmAllBreakpoints, used when entering the monitor.
|
| 3744 |
|
|
;------------------------------------------------------------------------------
|
| 3745 |
|
|
|
| 3746 |
|
|
DisarmAllBreakpoints:
|
| 3747 |
|
|
movem.l d0/a0/a1/a2,-(a7) ; stack some regs
|
| 3748 |
|
|
move.w NumSetBreakpoints,d0 ; d0 = number of breakpoints that are set
|
| 3749 |
|
|
cmpi.w #numBreakpoints,d0 ; check for valid number
|
| 3750 |
|
|
bhs.s .0001
|
| 3751 |
|
|
lea Breakpoints,a2 ; a2 = pointer to breakpoint address table
|
| 3752 |
|
|
lea BreakpointWords,a0 ; a0 = pointer to breakpoint instruction word table
|
| 3753 |
|
|
bra.s .0003 ; enter loop at bottom
|
| 3754 |
|
|
.0002:
|
| 3755 |
|
|
move.l (a2)+,a1 ; a1 = address of breakpoint
|
| 3756 |
|
|
move.w (a0)+,(a1) ; copy instruction word back to code
|
| 3757 |
|
|
.0003:
|
| 3758 |
|
|
dbra d0,.0002
|
| 3759 |
|
|
movem.l (a7)+,d0/a0/a1/a2 ; restore regs
|
| 3760 |
|
|
.0001:
|
| 3761 |
|
|
rts
|
| 3762 |
|
|
|
| 3763 |
|
|
;------------------------------------------------------------------------------
|
| 3764 |
|
|
; ArmAllBreakpoints, used when entering the monitor.
|
| 3765 |
|
|
;------------------------------------------------------------------------------
|
| 3766 |
|
|
|
| 3767 |
|
|
ArmAllBreakpoints:
|
| 3768 |
|
|
movem.l d0/a0/a1/a2,-(a7) ; stack some regs
|
| 3769 |
|
|
move.w NumSetBreakpoints,d0 ; d0 = number of breakpoints
|
| 3770 |
|
|
cmpi.w #numBreakpoints,d0 ; is the number valid?
|
| 3771 |
|
|
bhs.s .0001
|
| 3772 |
|
|
lea Breakpoints,a2 ; a2 = pointer to breakpoint address table
|
| 3773 |
|
|
lea BreakpointWords,a0 ; a0 = pointer to instruction word table
|
| 3774 |
|
|
bra.s .0003 ; enter loop at bottom
|
| 3775 |
|
|
.0002:
|
| 3776 |
|
|
move.l (a2)+,a1 ; a1 = address of breakpoint
|
| 3777 |
|
|
move.w (a1),(a0) ; copy instruction word to table
|
| 3778 |
|
|
move.w #$4E43,(a0)+ ; set instruction = TRAP3
|
| 3779 |
|
|
.0003:
|
| 3780 |
|
|
dbra d0,.0002
|
| 3781 |
|
|
movem.l (a7)+,d0/a0/a1/a2 ; restore regs
|
| 3782 |
|
|
.0001:
|
| 3783 |
|
|
rts
|
| 3784 |
|
|
|
| 3785 |
|
|
;------------------------------------------------------------------------------
|
| 3786 |
|
|
;------------------------------------------------------------------------------
|
| 3787 |
|
|
|
| 3788 |
|
|
ArmBreakpoint:
|
| 3789 |
|
|
movem.l d0/d1/d2/a0/a1/a2,-(a7)
|
| 3790 |
|
|
move.w NumSetBreakpoints,d0 ; d0 = number of breakpoints
|
| 3791 |
|
|
cmpi.w #numBreakpoints,d0 ; check if too many
|
| 3792 |
|
|
bhs.s .0001
|
| 3793 |
|
|
addi.w #1,NumSetBreakpoints ; increment number of breakpoints
|
| 3794 |
|
|
move.l d0,d2
|
| 3795 |
|
|
bsr ignBlanks
|
| 3796 |
|
|
bsr GetHexNumber
|
| 3797 |
|
|
beq.s .0001 ; was there an address?
|
| 3798 |
|
|
btst #0,d1 ; address value must be even
|
| 3799 |
|
|
bne.s .0001
|
| 3800 |
|
|
; See if the breakpoint is in the table already
|
| 3801 |
|
|
lea Breakpoints,a1 ; a1 points to breakpoint table
|
| 3802 |
|
|
move.w #numBreakpoints-1,d2
|
| 3803 |
|
|
.0002:
|
| 3804 |
|
|
cmp.l (a1)+,d1
|
| 3805 |
|
|
beq.s .0003 ; breakpoint is in table already
|
| 3806 |
|
|
dbra d2,.0002
|
| 3807 |
|
|
; Add breakpoint to table
|
| 3808 |
|
|
; Search for empty entry
|
| 3809 |
|
|
lea Breakpoints,a1 ; a1 = pointer to breakpoint address table
|
| 3810 |
|
|
clr.w d2 ; d2 = count
|
| 3811 |
|
|
.0006:
|
| 3812 |
|
|
tst.l (a1) ; is the entry empty?
|
| 3813 |
|
|
beq.s .0005 ; branch if found empty entry
|
| 3814 |
|
|
lea 4(a1),a1 ; point to next entry
|
| 3815 |
|
|
addi.w #1,d2 ; increment count
|
| 3816 |
|
|
cmpi.w #numBreakpoints,d2 ; safety: check against max number
|
| 3817 |
|
|
blo.s .0006
|
| 3818 |
|
|
bra.s .0001 ; what? no empty entries found, table corrupt?
|
| 3819 |
|
|
.0005:
|
| 3820 |
|
|
asl.w #2,d2 ; d2 = long word index
|
| 3821 |
|
|
move.l d1,(a1,d2.w) ; move breakpoint address to table
|
| 3822 |
|
|
move.l d1,a2
|
| 3823 |
|
|
lsr.w #1,d2 ; d2 = word index
|
| 3824 |
|
|
.0004:
|
| 3825 |
|
|
lea BreakpointWords,a1
|
| 3826 |
|
|
move.w (a2),(a1,d2.w) ; copy instruction word to table
|
| 3827 |
|
|
move.w #$4E43,(a2) ; replace word with TRAP3
|
| 3828 |
|
|
.0001:
|
| 3829 |
|
|
movem.l (a7)+,d0/d1/d2/a0/a1/a2
|
| 3830 |
|
|
rts
|
| 3831 |
|
|
.0003:
|
| 3832 |
|
|
move.l -4(a1),a2 ; a2 = pointer to breakpoint address from table
|
| 3833 |
|
|
cmpi.w #$4E43,(a2) ; see if breakpoint already armed
|
| 3834 |
|
|
beq.s .0001
|
| 3835 |
|
|
asl.l #1,d2 ; d2 = word index
|
| 3836 |
|
|
bra.s .0004
|
| 3837 |
|
|
|
| 3838 |
|
|
|
| 3839 |
|
|
;------------------------------------------------------------------------------
|
| 3840 |
|
|
;------------------------------------------------------------------------------
|
| 3841 |
|
|
|
| 3842 |
|
|
DisarmBreakpoint:
|
| 3843 |
|
|
movem.l d0/d1/d2/a0/a1/a2,-(a7)
|
| 3844 |
|
|
move.w NumSetBreakpoints,d0 ; d0 = number of breakpoints
|
| 3845 |
|
|
cmpi.w #numBreakpoints,d0 ; check if too many
|
| 3846 |
|
|
bhi.s .0001
|
| 3847 |
|
|
move.l d0,d2
|
| 3848 |
|
|
bsr ignBlanks
|
| 3849 |
|
|
bsr GetHexNumber
|
| 3850 |
|
|
beq.s .0001 ; was there an address?
|
| 3851 |
|
|
btst #0,d1 ; address value must be even
|
| 3852 |
|
|
bne.s .0001
|
| 3853 |
|
|
; See if the breakpoint is in the table already
|
| 3854 |
|
|
lea Breakpoints,a1 ; a1 points to breakpoint table
|
| 3855 |
|
|
subi.w #1,d2
|
| 3856 |
|
|
.0002:
|
| 3857 |
|
|
cmp.l (a1)+,d1
|
| 3858 |
|
|
beq.s .0003 ; breakpoint is in table already
|
| 3859 |
|
|
dbra d2,.0002
|
| 3860 |
|
|
bra .0001 ; breakpoint was not in table
|
| 3861 |
|
|
.0003:
|
| 3862 |
|
|
; Remove breakpoint from table
|
| 3863 |
|
|
subi.w #1,NumSetBreakpoints ; decrement number of breakpoints
|
| 3864 |
|
|
move.l -4(a1),a2 ; a2 = pointer to breakpoint address from table
|
| 3865 |
|
|
clr.l -4(a1) ; empty out breakpoint
|
| 3866 |
|
|
lea BreakpointWords,a1
|
| 3867 |
|
|
asl.l #1,d2 ; d2 = word index
|
| 3868 |
|
|
move.w (a1,d2.w),(a2) ; copy instruction from table back to code
|
| 3869 |
|
|
.0001:
|
| 3870 |
|
|
movem.l (a7)+,d0/d1/d2/a0/a1/a2
|
| 3871 |
|
|
rts
|
| 3872 |
|
|
|
| 3873 |
|
|
;------------------------------------------------------------------------------
|
| 3874 |
|
|
;------------------------------------------------------------------------------
|
| 3875 |
|
|
|
| 3876 |
|
|
ListBreakpoints:
|
| 3877 |
|
|
bsr CRLF
|
| 3878 |
|
|
move.w #numBreakpoints,d2
|
| 3879 |
|
|
lea Breakpoints,a1
|
| 3880 |
|
|
.0001:
|
| 3881 |
|
|
move.l (a1)+,d1
|
| 3882 |
|
|
bsr DisplayTetra
|
| 3883 |
|
|
bsr CRLF
|
| 3884 |
|
|
dbra d2,.0001
|
| 3885 |
|
|
bra Monitor
|
| 3886 |
|
|
|
| 3887 |
|
|
;------------------------------------------------------------------------------
|
| 3888 |
|
|
;------------------------------------------------------------------------------
|
| 3889 |
|
|
|
| 3890 |
|
|
ClearBreakpointList:
|
| 3891 |
|
|
move.w #numBreakpoints,d2
|
| 3892 |
|
|
lea Breakpoints,a1
|
| 3893 |
|
|
.0001:
|
| 3894 |
|
|
clr.l (a1)+
|
| 3895 |
|
|
dbra d2,.0001
|
| 3896 |
|
|
rts
|
| 3897 |
|
|
|
| 3898 |
|
|
;------------------------------------------------------------------------------
|
| 3899 |
|
|
; SendMsg
|
| 3900 |
|
|
; 00100xy0
|
| 3901 |
|
|
;
|
| 3902 |
|
|
; Parameters:
|
| 3903 |
|
|
; d1 = target core number
|
| 3904 |
|
|
; d2 = argument 1
|
| 3905 |
|
|
; d3 = argument 2
|
| 3906 |
|
|
; d4 = argument 3
|
| 3907 |
|
|
;
|
| 3908 |
|
|
;------------------------------------------------------------------------------
|
| 3909 |
|
|
|
| 3910 |
|
|
SendMsg:
|
| 3911 |
|
|
movem.l d5/a1,-(a7)
|
| 3912 |
|
|
lsl.w #8,d1
|
| 3913 |
|
|
movec coreno,d5
|
| 3914 |
|
|
lsl.w #4,d5
|
| 3915 |
|
|
or.w d5,d1
|
| 3916 |
|
|
lea $00100000,a1
|
| 3917 |
|
|
tst.l 0(a1,d1.w)
|
| 3918 |
|
|
bne .msgFull
|
| 3919 |
|
|
movec coreno,d5
|
| 3920 |
|
|
move.l d5,0(a1,d1.w)
|
| 3921 |
|
|
move.l d2,4(a1,d1.w)
|
| 3922 |
|
|
move.l d3,8(a1,d1.w)
|
| 3923 |
|
|
move.l d4,12(a1,d1.w)
|
| 3924 |
|
|
movem.l (a7)+,d5/a1
|
| 3925 |
|
|
moveq #0,d1
|
| 3926 |
|
|
rts
|
| 3927 |
|
|
.msgFull:
|
| 3928 |
|
|
movem.l (a7)+,d5/a1
|
| 3929 |
|
|
moveq #-1,d1
|
| 3930 |
|
|
rts
|
| 3931 |
|
|
|
| 3932 |
|
|
;------------------------------------------------------------------------------
|
| 3933 |
|
|
; ReceiveMsg
|
| 3934 |
|
|
; Scan the message table for messages and dispatch them.
|
| 3935 |
|
|
; 00100xy0
|
| 3936 |
|
|
;
|
| 3937 |
|
|
; Parameters:
|
| 3938 |
|
|
;------------------------------------------------------------------------------
|
| 3939 |
|
|
|
| 3940 |
|
|
ReceiveMsg:
|
| 3941 |
|
|
movem.l d1/d2/d3/d4/d5/d6/d7/a1,-(a7)
|
| 3942 |
|
|
lea $00100000,a1
|
| 3943 |
|
|
movec coreno,d5
|
| 3944 |
|
|
lsl.w #8,d5
|
| 3945 |
|
|
moveq #2,d6
|
| 3946 |
|
|
.nextCore:
|
| 3947 |
|
|
move.w d6,d7
|
| 3948 |
|
|
lsl.w #4,d7
|
| 3949 |
|
|
add.w d5,d7
|
| 3950 |
|
|
tst.l 0(a1,d7.w) ; Is there a message from core d6?
|
| 3951 |
|
|
beq .noMsg
|
| 3952 |
|
|
move.l 0(a1,d7.w),d1
|
| 3953 |
|
|
move.l 4(a1,d7.w),d2
|
| 3954 |
|
|
move.l 8(a1,d7.w),d3
|
| 3955 |
|
|
move.l 12(a1,d7.w),d4
|
| 3956 |
|
|
clr.l 0(a1,d7.w) ; indicate message was received
|
| 3957 |
|
|
bsr DispatchMsg
|
| 3958 |
|
|
.noMsg:
|
| 3959 |
|
|
addq #1,d6
|
| 3960 |
|
|
cmp.w #9,d6
|
| 3961 |
|
|
bls .nextCore
|
| 3962 |
|
|
movem.l (a7)+,d1/d2/d3/d4/d5/d6/d7/a1
|
| 3963 |
|
|
rts
|
| 3964 |
|
|
|
| 3965 |
|
|
;------------------------------------------------------------------------------
|
| 3966 |
|
|
;------------------------------------------------------------------------------
|
| 3967 |
|
|
|
| 3968 |
|
|
DispatchMsg:
|
| 3969 |
|
|
rts
|
| 3970 |
|
|
|
| 3971 |
7 |
robfinch |
code
|
| 3972 |
|
|
;==============================================================================
|
| 3973 |
|
|
; Decimal-Floating point to string conversion routine.
|
| 3974 |
|
|
;
|
| 3975 |
|
|
; Modifies
|
| 3976 |
|
|
; _fpWork work area
|
| 3977 |
|
|
; Register Usage:
|
| 3978 |
|
|
; fp0 = input decimal-float to convert
|
| 3979 |
|
|
; fp1 = constant holder, 1.0, 10.0
|
| 3980 |
|
|
; fp2 = 1.0e value for conversion
|
| 3981 |
|
|
; fp3 = holds digit value during significand conversion
|
| 3982 |
|
|
; a0 = pointer to string buffer, updated to point to NULL at end of string
|
| 3983 |
|
|
; a1 = pointer to "Nan" or "Inf" message string
|
| 3984 |
|
|
; d0 = temporary
|
| 3985 |
|
|
; d1 = digit value during exponent, significand conversion
|
| 3986 |
|
|
; d6 = exponent
|
| 3987 |
|
|
;==============================================================================
|
| 3988 |
|
|
align 4
|
| 3989 |
|
|
_dfOne dc.l $25ff0000,$00000000,$00000000
|
| 3990 |
|
|
_dfTen dc.l $2600C000,$00000000,$00000000
|
| 3991 |
|
|
_dfMil dc.l $2606DDFA,$1C000000,$00000000
|
| 3992 |
|
|
|
| 3993 |
|
|
_msgNan dc.b "NaN",0
|
| 3994 |
|
|
_msgInf dc.b "Inf",0
|
| 3995 |
|
|
even
|
| 3996 |
|
|
|
| 3997 |
2 |
robfinch |
;------------------------------------------------------------------------------
|
| 3998 |
7 |
robfinch |
; Check for the special Nan and infinity values. Output the appropriate string.
|
| 3999 |
|
|
;
|
| 4000 |
|
|
; Modifies
|
| 4001 |
|
|
; _fpWork area
|
| 4002 |
|
|
; d0,a1,a0
|
| 4003 |
|
|
; Parameters:
|
| 4004 |
|
|
; fp0 = dbl
|
| 4005 |
2 |
robfinch |
;------------------------------------------------------------------------------
|
| 4006 |
|
|
|
| 4007 |
7 |
robfinch |
_CheckNan:
|
| 4008 |
|
|
fmove.p fp0,_fpWork
|
| 4009 |
|
|
move.b _fpWork,d0 ; get sign+combo
|
| 4010 |
|
|
andi.b #$7C,d0 ; mask for combo bits
|
| 4011 |
|
|
cmpi.b #$7C,d0 ; is it the Nan combo?
|
| 4012 |
|
|
bne .notNan
|
| 4013 |
|
|
lea _msgNan,a1 ; output "Nan"
|
| 4014 |
|
|
bra .outStr
|
| 4015 |
|
|
.notNan
|
| 4016 |
|
|
cmpi.b #$78,d0 ; is it infinity combo?
|
| 4017 |
|
|
bne .notInf
|
| 4018 |
|
|
lea _msgInf,a1
|
| 4019 |
|
|
.outStr
|
| 4020 |
|
|
move.b (a1)+,(a0)+ ; output "Inf"
|
| 4021 |
|
|
move.b (a1)+,(a0)+
|
| 4022 |
|
|
move.b (a1)+,(a0)+
|
| 4023 |
|
|
clr.b (a0)
|
| 4024 |
|
|
.twoup
|
| 4025 |
|
|
addq #4,sp ; pop return address for two up return
|
| 4026 |
|
|
.notInf
|
| 4027 |
|
|
rts
|
| 4028 |
|
|
|
| 4029 |
|
|
;------------------------------------------------------------------------------
|
| 4030 |
|
|
; Check for a zero value. Output a single "0" if zero,
|
| 4031 |
|
|
;
|
| 4032 |
|
|
; Modifies:
|
| 4033 |
|
|
; a0
|
| 4034 |
|
|
; Parameters:
|
| 4035 |
|
|
; fp0 = dbl
|
| 4036 |
|
|
;------------------------------------------------------------------------------
|
| 4037 |
|
|
|
| 4038 |
|
|
_CheckZero:
|
| 4039 |
|
|
ftst fp0 ; check if number is zero
|
| 4040 |
|
|
fbne .0003
|
| 4041 |
|
|
move.b #'0',(a0)+ ; if zero output "0"
|
| 4042 |
|
|
clr.b (a0)
|
| 4043 |
|
|
addq #4,sp ; pop return address for two up return
|
| 4044 |
|
|
.0003
|
| 4045 |
|
|
rts
|
| 4046 |
|
|
|
| 4047 |
|
|
;------------------------------------------------------------------------------
|
| 4048 |
|
|
; Check for a negative number. This includes Nans and Infinities. Output a "-"
|
| 4049 |
|
|
; if negative.
|
| 4050 |
|
|
;
|
| 4051 |
|
|
; Modifies
|
| 4052 |
|
|
; a0
|
| 4053 |
|
|
; Parameters:
|
| 4054 |
|
|
; fp0 = dbl
|
| 4055 |
|
|
;------------------------------------------------------------------------------
|
| 4056 |
|
|
|
| 4057 |
|
|
_CheckNegative:
|
| 4058 |
|
|
ftst fp0 ; is number negative?
|
| 4059 |
|
|
fbge .0002
|
| 4060 |
|
|
move.b #'-',(a0)+ ; yes, output '-'
|
| 4061 |
|
|
fneg fp0 ; make fp0 positive
|
| 4062 |
|
|
.0002
|
| 4063 |
|
|
rts
|
| 4064 |
|
|
|
| 4065 |
|
|
;------------------------------------------------------------------------------
|
| 4066 |
|
|
; Make the input value larger so that digits may appear before the decimal
|
| 4067 |
|
|
; point.
|
| 4068 |
|
|
;
|
| 4069 |
|
|
; Modifies:
|
| 4070 |
|
|
; fp0,fp1,d6
|
| 4071 |
|
|
; Parameters:
|
| 4072 |
|
|
; fp0 = dbl
|
| 4073 |
|
|
;------------------------------------------------------------------------------
|
| 4074 |
|
|
|
| 4075 |
|
|
; if (dbl < 1.0) {
|
| 4076 |
|
|
; while (dbl < 1.0) {
|
| 4077 |
|
|
; dbl *= 1000000.0;
|
| 4078 |
|
|
; exp -= 6;
|
| 4079 |
|
|
; }
|
| 4080 |
|
|
; }
|
| 4081 |
|
|
|
| 4082 |
|
|
_MakeBig:
|
| 4083 |
|
|
fmove.w #1,fp1
|
| 4084 |
|
|
.0002
|
| 4085 |
|
|
fcmp fp1,fp0 ; is fp0 > 1?
|
| 4086 |
|
|
fbge .0001 ; yes, return
|
| 4087 |
|
|
fscale.l #6,fp0 ; multiply fp0 by a million
|
| 4088 |
|
|
subi.w #6,d6 ; decrement exponent by six
|
| 4089 |
|
|
bra .0002 ; keep trying until number is > 1
|
| 4090 |
|
|
.0001
|
| 4091 |
|
|
fmove.p fp0,_fpWork+24 ; debugging
|
| 4092 |
|
|
rts
|
| 4093 |
|
|
|
| 4094 |
|
|
;------------------------------------------------------------------------------
|
| 4095 |
|
|
; Create a number dbl2 on the same order of magnitude as dbl, but
|
| 4096 |
|
|
; less than dbl. The number will be 1.0e
|
| 4097 |
|
|
;
|
| 4098 |
|
|
; Modifies:
|
| 4099 |
|
|
; d6,fp2
|
| 4100 |
|
|
; Parameters:
|
| 4101 |
|
|
; fp0 = dbl
|
| 4102 |
|
|
;------------------------------------------------------------------------------
|
| 4103 |
|
|
|
| 4104 |
|
|
; // The following is similar to using log10() and pow() functions.
|
| 4105 |
|
|
; // Now dbl is >= 1.0
|
| 4106 |
|
|
; // Create a number dbl2 on the same order of magnitude as dbl, but
|
| 4107 |
|
|
; // less than dbl.
|
| 4108 |
|
|
; dbl2 = 1.0;
|
| 4109 |
|
|
; dbla = dbl2;
|
| 4110 |
|
|
; if (dbl > dbl2) { // dbl > 1.0 ?
|
| 4111 |
|
|
; while (dbl2 <= dbl) {
|
| 4112 |
|
|
; dbla = dbl2;
|
| 4113 |
|
|
; dbl2 *= 10.0; // increase power of 10
|
| 4114 |
|
|
; exp++;
|
| 4115 |
|
|
; }
|
| 4116 |
|
|
; // The above loop goes one too far, we want the last value less
|
| 4117 |
|
|
; // than dbl.
|
| 4118 |
|
|
; dbl2 = dbla;
|
| 4119 |
|
|
; exp--;
|
| 4120 |
|
|
; }
|
| 4121 |
|
|
|
| 4122 |
|
|
_LessThanDbl:
|
| 4123 |
|
|
fmove.w #1,fp2 ; setup fp2 = 1
|
| 4124 |
|
|
fcmp fp2,fp0 ; if (dbl > dbl2)
|
| 4125 |
|
|
fble .0004
|
| 4126 |
|
|
.0006
|
| 4127 |
|
|
fcmp fp0,fp2 ; while (dbl2 <= dbl)
|
| 4128 |
|
|
fbgt .0005
|
| 4129 |
|
|
fscale.w #1,fp2 ; dbl2 *= 10 (increase exponent by one)
|
| 4130 |
|
|
addi.w #1,d6 ; exp++
|
| 4131 |
|
|
bra .0006
|
| 4132 |
|
|
.0005
|
| 4133 |
|
|
fscale.l #-1,fp2 ; dbl2 /= 10 (decrease exponent by one)
|
| 4134 |
|
|
subi.w #1,d6 ; exp--;
|
| 4135 |
|
|
.0004
|
| 4136 |
|
|
fmove.p fp0,_fpWork ; debugging
|
| 4137 |
|
|
fmove.p fp2,_fpWork+12
|
| 4138 |
|
|
rts
|
| 4139 |
|
|
|
| 4140 |
|
|
;------------------------------------------------------------------------------
|
| 4141 |
|
|
; Compute the number of digits before the decimal point.
|
| 4142 |
|
|
;
|
| 4143 |
|
|
; Modifies:
|
| 4144 |
|
|
; d0,d6,_digits_before_decpt
|
| 4145 |
|
|
; Parameters:
|
| 4146 |
|
|
; d6 = exponent
|
| 4147 |
|
|
;------------------------------------------------------------------------------
|
| 4148 |
|
|
|
| 4149 |
|
|
; if (exp >= 0 && exp < 6) {
|
| 4150 |
|
|
; digits_before_decpt = exp+1;
|
| 4151 |
|
|
; exp = 0;
|
| 4152 |
|
|
; }
|
| 4153 |
|
|
; else if (exp >= -6)
|
| 4154 |
|
|
; digits_before_decpt = 1;
|
| 4155 |
|
|
; else
|
| 4156 |
|
|
; digits_before_decpt = -1;
|
| 4157 |
|
|
|
| 4158 |
|
|
_ComputeDigitsBeforeDecpt:
|
| 4159 |
|
|
tst.w d6
|
| 4160 |
|
|
bmi .0007
|
| 4161 |
|
|
cmpi.w #6,d6
|
| 4162 |
|
|
bge .0007
|
| 4163 |
|
|
move.w d6,d0
|
| 4164 |
|
|
addi.w #1,d0
|
| 4165 |
|
|
move.w d0,_digits_before_decpt
|
| 4166 |
|
|
clr.w d6
|
| 4167 |
|
|
rts
|
| 4168 |
|
|
.0007
|
| 4169 |
|
|
cmpi.w #-6,d6
|
| 4170 |
|
|
blt .0009
|
| 4171 |
|
|
move.w #1,_digits_before_decpt
|
| 4172 |
|
|
rts
|
| 4173 |
|
|
.0009
|
| 4174 |
|
|
move.w #-1,_digits_before_decpt
|
| 4175 |
|
|
rts
|
| 4176 |
|
|
|
| 4177 |
|
|
;------------------------------------------------------------------------------
|
| 4178 |
|
|
; Spit out a leading zero before the decimal point for a small number.
|
| 4179 |
|
|
;
|
| 4180 |
|
|
; Parameters:
|
| 4181 |
|
|
; d6 = exponent
|
| 4182 |
|
|
;------------------------------------------------------------------------------
|
| 4183 |
|
|
|
| 4184 |
|
|
; if (exp < -6) {
|
| 4185 |
|
|
; buf[ndx] = '0';
|
| 4186 |
|
|
; ndx++;
|
| 4187 |
|
|
; buf[ndx] = '.';
|
| 4188 |
|
|
; ndx++;
|
| 4189 |
|
|
; }
|
| 4190 |
|
|
|
| 4191 |
|
|
_LeadingZero:
|
| 4192 |
|
|
cmpi.w #-6,d6
|
| 4193 |
|
|
bge .0010
|
| 4194 |
|
|
move.b #'0',(a0)+
|
| 4195 |
|
|
move.b #'.',(a0)+
|
| 4196 |
|
|
.0010
|
| 4197 |
|
|
rts
|
| 4198 |
|
|
|
| 4199 |
|
|
;------------------------------------------------------------------------------
|
| 4200 |
|
|
; Extract the digits of the significand.
|
| 4201 |
|
|
;
|
| 4202 |
|
|
; Modifies:
|
| 4203 |
|
|
; _precision variable
|
| 4204 |
|
|
; Register Usage
|
| 4205 |
|
|
; d1 = digit
|
| 4206 |
|
|
; fp0 = dbl
|
| 4207 |
|
|
; fp2 = dbl2
|
| 4208 |
|
|
; fp3 = digit as decimal float
|
| 4209 |
|
|
; fp7 = dbla
|
| 4210 |
|
|
; Parameters:
|
| 4211 |
|
|
; fp0
|
| 4212 |
|
|
;------------------------------------------------------------------------------
|
| 4213 |
|
|
|
| 4214 |
|
|
; // Now loop processing one digit at a time.
|
| 4215 |
|
|
; for (nn = 0; nn < 25 && precision > 0; nn++) {
|
| 4216 |
|
|
; digit = 0;
|
| 4217 |
|
|
; dbla = dbl;
|
| 4218 |
|
|
; // dbl is on the same order of magnitude as dbl2 so
|
| 4219 |
|
|
; // a repeated subtract can be used to find the digit.
|
| 4220 |
|
|
; while (dbl >= dbl2) {
|
| 4221 |
|
|
; dbl -= dbl2;
|
| 4222 |
|
|
; digit++;
|
| 4223 |
|
|
; }
|
| 4224 |
|
|
; buf[ndx] = digit + '0';
|
| 4225 |
|
|
; // Now go back and perform just a single subtract and
|
| 4226 |
|
|
; // a multiply to find out how much to reduce dbl by.
|
| 4227 |
|
|
; // This should improve the accuracy
|
| 4228 |
|
|
; if (digit > 2)
|
| 4229 |
|
|
; dbl = dbla - dbl2 * digit;
|
| 4230 |
|
|
; ndx++;
|
| 4231 |
|
|
; digits_before_decpt--;
|
| 4232 |
|
|
; if (digits_before_decpt==0) {
|
| 4233 |
|
|
; buf[ndx] = '.';
|
| 4234 |
|
|
; ndx++;
|
| 4235 |
|
|
; }
|
| 4236 |
|
|
; else if (digits_before_decpt < 0)
|
| 4237 |
|
|
; precision--;
|
| 4238 |
|
|
; // Shift the next digit to be tested into position.
|
| 4239 |
|
|
; dbl *= 10.0;
|
| 4240 |
|
|
; }
|
| 4241 |
|
|
|
| 4242 |
|
|
_SpitOutDigits:
|
| 4243 |
|
|
move.w #24,d0 ; d0 = nn
|
| 4244 |
|
|
fmove.l #10,fp1 ; fp1 = 10.0
|
| 4245 |
|
|
.0017
|
| 4246 |
|
|
tst.l _precision
|
| 4247 |
|
|
ble .0011
|
| 4248 |
|
|
moveq #0,d1 ; digit = 0
|
| 4249 |
|
|
fmove fp0,fp7 ; dbla = dbl
|
| 4250 |
|
|
.0013
|
| 4251 |
|
|
fcmp fp2,fp0
|
| 4252 |
|
|
fblt .0012
|
| 4253 |
|
|
fsub fp2,fp0 ; dbl -= dbl2
|
| 4254 |
|
|
addi.b #1,d1 ; digit++
|
| 4255 |
|
|
bra .0013
|
| 4256 |
|
|
.0012
|
| 4257 |
|
|
addi.b #'0',d1 ; convert digit to ascii
|
| 4258 |
|
|
move.b d1,(a0)+ ; and store
|
| 4259 |
|
|
subi.b #'0',d1 ; d1 = binary digit again
|
| 4260 |
|
|
; cmpi.b #2,d1
|
| 4261 |
|
|
; ble .0014
|
| 4262 |
|
|
|
| 4263 |
|
|
; ext.w d1
|
| 4264 |
|
|
; ext.l d1
|
| 4265 |
|
|
; fmove.l d1,fp3 ; fp3 = digit
|
| 4266 |
|
|
; fmul fp2,fp3 ; fp3 = dbl2 * digit
|
| 4267 |
|
|
; fmove fp7,fp0
|
| 4268 |
|
|
; fsub fp3,fp0 ; dbl = dbla - dbl2 * digit
|
| 4269 |
|
|
.0014
|
| 4270 |
|
|
subi.w #1,_digits_before_decpt
|
| 4271 |
|
|
bne .0015
|
| 4272 |
|
|
move.b #'.',(a0)+
|
| 4273 |
|
|
.0015
|
| 4274 |
|
|
tst.w _digits_before_decpt
|
| 4275 |
|
|
bge .0016
|
| 4276 |
|
|
subi.l #1,_precision
|
| 4277 |
|
|
.0016
|
| 4278 |
|
|
fscale.l #-1,fp2 ; dbl *= 10.0
|
| 4279 |
|
|
dbra d0,.0017
|
| 4280 |
|
|
.0011
|
| 4281 |
|
|
rts
|
| 4282 |
|
|
|
| 4283 |
|
|
;------------------------------------------------------------------------------
|
| 4284 |
|
|
; If the number ends in a decimal point, trim off the point.
|
| 4285 |
|
|
;
|
| 4286 |
|
|
; Registers Modified:
|
| 4287 |
|
|
; none
|
| 4288 |
|
|
; Parameters:
|
| 4289 |
|
|
; a0 = pointer to end of number
|
| 4290 |
|
|
; Returns:
|
| 4291 |
|
|
; a0 = updated to point just past last digit.
|
| 4292 |
|
|
;------------------------------------------------------------------------------
|
| 4293 |
|
|
|
| 4294 |
|
|
_TrimTrailingPoint:
|
| 4295 |
|
|
cmpi.b #'.',-1(a0)
|
| 4296 |
|
|
bne .0001
|
| 4297 |
|
|
clr.b -(a0)
|
| 4298 |
|
|
rts
|
| 4299 |
|
|
.0001
|
| 4300 |
|
|
cmpi.b #'.',(a0)
|
| 4301 |
|
|
bne .0002
|
| 4302 |
|
|
cmpi.b #0,1(a0)
|
| 4303 |
|
|
bne .0002
|
| 4304 |
|
|
clr.b (a0)
|
| 4305 |
|
|
subq #1,a0
|
| 4306 |
|
|
.0002
|
| 4307 |
|
|
rts
|
| 4308 |
|
|
|
| 4309 |
|
|
;------------------------------------------------------------------------------
|
| 4310 |
|
|
; If the number ends in .0 get rid of the .0
|
| 4311 |
|
|
;
|
| 4312 |
|
|
; Registers Modified:
|
| 4313 |
|
|
; none
|
| 4314 |
|
|
; Parameters:
|
| 4315 |
|
|
; a0 = pointer to last digits of number
|
| 4316 |
|
|
; Returns:
|
| 4317 |
|
|
; a0 = updated to point just past last digit.
|
| 4318 |
|
|
;------------------------------------------------------------------------------
|
| 4319 |
|
|
|
| 4320 |
|
|
_TrimDotZero:
|
| 4321 |
|
|
tst.b (a0)
|
| 4322 |
|
|
bne .0004
|
| 4323 |
|
|
cmpi.b #'0',-1(a0)
|
| 4324 |
|
|
bne .0004
|
| 4325 |
|
|
cmpi.b #'.',-2(a0)
|
| 4326 |
|
|
bne .0004
|
| 4327 |
|
|
clr.b -2(a0)
|
| 4328 |
|
|
subq #2,a0
|
| 4329 |
|
|
.0004
|
| 4330 |
|
|
rts
|
| 4331 |
|
|
|
| 4332 |
|
|
;------------------------------------------------------------------------------
|
| 4333 |
|
|
; Trim trailing zeros from the number. Generally there is no need to display
|
| 4334 |
|
|
; trailing zeros.
|
| 4335 |
|
|
; Turns a number like 652.000000000000000000000 into 650.0
|
| 4336 |
|
|
;
|
| 4337 |
|
|
; Registers Modified:
|
| 4338 |
|
|
; none
|
| 4339 |
|
|
; Parameters:
|
| 4340 |
|
|
; a0 = pointer to last digits of number
|
| 4341 |
|
|
; Returns:
|
| 4342 |
|
|
; a0 = updated to point just past last digit.
|
| 4343 |
|
|
;------------------------------------------------------------------------------
|
| 4344 |
|
|
|
| 4345 |
|
|
; // Trim trailing zeros from the number
|
| 4346 |
|
|
; do {
|
| 4347 |
|
|
; ndx--;
|
| 4348 |
|
|
; } while(buf[ndx]=='0');
|
| 4349 |
|
|
; ndx++;
|
| 4350 |
|
|
|
| 4351 |
|
|
_TrimTrailingZeros:
|
| 4352 |
|
|
.0018
|
| 4353 |
|
|
cmpi.b #'0',-(a0) ; if the last digit was a zero, backup
|
| 4354 |
|
|
beq .0018
|
| 4355 |
|
|
addq #1,a0 ; now advance by one
|
| 4356 |
|
|
move.b #0,(a0) ; NULL terminate string
|
| 4357 |
|
|
rts
|
| 4358 |
|
|
|
| 4359 |
|
|
;------------------------------------------------------------------------------
|
| 4360 |
|
|
; Output 'e+' or 'e-'
|
| 4361 |
|
|
;
|
| 4362 |
|
|
; Registers Modified:
|
| 4363 |
|
|
; d6.w (if negative)
|
| 4364 |
|
|
; Parameters:
|
| 4365 |
|
|
; a0 = pointer to last digits of number
|
| 4366 |
|
|
; Returns:
|
| 4367 |
|
|
; a0 = updated to point just past '+' or '-'.
|
| 4368 |
|
|
;------------------------------------------------------------------------------
|
| 4369 |
|
|
|
| 4370 |
|
|
; // Spit out +/-E
|
| 4371 |
|
|
; buf[ndx] = E;
|
| 4372 |
|
|
; ndx++;
|
| 4373 |
|
|
; if (exp < 0) {
|
| 4374 |
|
|
; buf[ndx]='-';
|
| 4375 |
|
|
; ndx++;
|
| 4376 |
|
|
; exp = -exp;
|
| 4377 |
|
|
; }
|
| 4378 |
|
|
; else {
|
| 4379 |
|
|
; buf[ndx]='+';
|
| 4380 |
|
|
; ndx++;
|
| 4381 |
|
|
; }
|
| 4382 |
|
|
|
| 4383 |
|
|
_SpitOutE:
|
| 4384 |
|
|
move.b _E,(a0)+
|
| 4385 |
|
|
tst.w d6
|
| 4386 |
|
|
bge .0021
|
| 4387 |
|
|
move.b #'-',(a0)+
|
| 4388 |
|
|
neg.w d6
|
| 4389 |
|
|
bra .0022
|
| 4390 |
|
|
.0021
|
| 4391 |
|
|
move.b #'+',(a0)+
|
| 4392 |
|
|
.0022
|
| 4393 |
|
|
rts
|
| 4394 |
|
|
|
| 4395 |
|
|
;------------------------------------------------------------------------------
|
| 4396 |
|
|
; Extract a single digit of the exponent. Extract works from the leftmost digit
|
| 4397 |
|
|
; to the rightmost.
|
| 4398 |
|
|
;
|
| 4399 |
|
|
; Register Usage
|
| 4400 |
|
|
; d2 = history of zeros
|
| 4401 |
|
|
; d3 = digit
|
| 4402 |
|
|
; Modifies
|
| 4403 |
|
|
; d2,d3,d6,a0
|
| 4404 |
|
|
; Parameter
|
| 4405 |
|
|
; d1.w = power of ten
|
| 4406 |
|
|
; d6.w = exponent
|
| 4407 |
|
|
;------------------------------------------------------------------------------
|
| 4408 |
|
|
|
| 4409 |
|
|
_ExtExpDigit:
|
| 4410 |
|
|
ext.l d6 ; make d6 a long
|
| 4411 |
|
|
divu d1,d6 ; divide by power of ten
|
| 4412 |
|
|
move.b d6,d3 ; d3 = quotient (0 to 9)
|
| 4413 |
|
|
swap d6 ; d6 = remainder, setup for next digit
|
| 4414 |
|
|
or.b d3,d2
|
| 4415 |
|
|
tst.b d3
|
| 4416 |
|
|
bne .0003
|
| 4417 |
|
|
tst.b d2
|
| 4418 |
|
|
beq .0004
|
| 4419 |
|
|
.0003
|
| 4420 |
|
|
addi.b #'0',d3 ; convert to ascii
|
| 4421 |
|
|
move.b d3,(a0)+
|
| 4422 |
|
|
.0004
|
| 4423 |
|
|
rts
|
| 4424 |
|
|
|
| 4425 |
|
|
;------------------------------------------------------------------------------
|
| 4426 |
|
|
; Extract all the digits of the exponent.
|
| 4427 |
|
|
;
|
| 4428 |
|
|
; Register Usage
|
| 4429 |
|
|
; d1 = power of 10
|
| 4430 |
|
|
; d2 = history of zeros
|
| 4431 |
|
|
; Parameters
|
| 4432 |
|
|
; a0 = pointer to string buffer
|
| 4433 |
|
|
; d6 = exponent
|
| 4434 |
|
|
;------------------------------------------------------------------------------
|
| 4435 |
|
|
|
| 4436 |
|
|
; // If the number is times 10^0 don't output the exponent
|
| 4437 |
|
|
; if (exp==0) {
|
| 4438 |
|
|
; buf[ndx]='\0';
|
| 4439 |
|
|
; goto prt;
|
| 4440 |
|
|
; }
|
| 4441 |
|
|
|
| 4442 |
|
|
_ExtExpDigits:
|
| 4443 |
|
|
tst.w d6 ; is exponent zero?
|
| 4444 |
|
|
beq .0002
|
| 4445 |
|
|
bsr _SpitOutE ; exponent is non-zero e+
|
| 4446 |
|
|
clr.b d2 ; d2 = history of zeros
|
| 4447 |
|
|
move.w #1000,d1
|
| 4448 |
|
|
bsr _ExtExpDigit
|
| 4449 |
|
|
move.w #100,d1
|
| 4450 |
|
|
bsr _ExtExpDigit
|
| 4451 |
|
|
move.w #10,d1
|
| 4452 |
|
|
bsr _ExtExpDigit
|
| 4453 |
|
|
move.w #1,d1
|
| 4454 |
|
|
bsr _ExtExpDigit
|
| 4455 |
|
|
.0002:
|
| 4456 |
|
|
move.b #0,(a0) ; NULL terminate string
|
| 4457 |
|
|
rts ; and return
|
| 4458 |
|
|
|
| 4459 |
|
|
;------------------------------------------------------------------------------
|
| 4460 |
|
|
; Pad the left side of the output string.
|
| 4461 |
|
|
;
|
| 4462 |
|
|
; Modifies:
|
| 4463 |
|
|
; d0,d1,d2,d3
|
| 4464 |
|
|
;------------------------------------------------------------------------------
|
| 4465 |
|
|
|
| 4466 |
|
|
; // pad left
|
| 4467 |
|
|
; if (width > 0) {
|
| 4468 |
|
|
; if (ndx < width) {
|
| 4469 |
|
|
; for (nn = 39; nn >= width-ndx; nn--)
|
| 4470 |
|
|
; buf[nn] = buf[nn-(width-ndx)];
|
| 4471 |
|
|
; for (; nn >= 0; nn--)
|
| 4472 |
|
|
; buf[nn] = ' ';
|
| 4473 |
|
|
; }
|
| 4474 |
|
|
; }
|
| 4475 |
|
|
|
| 4476 |
|
|
_PadLeft:
|
| 4477 |
|
|
tst.b _width
|
| 4478 |
|
|
ble .0041
|
| 4479 |
|
|
move.l a0,d0
|
| 4480 |
|
|
sub.l #_fpBuf,d0 ; d0 = ndx
|
| 4481 |
|
|
cmp.b _width,d0
|
| 4482 |
|
|
bge .0041
|
| 4483 |
|
|
move.w #49,d1 ; d1 = nn
|
| 4484 |
|
|
.0040
|
| 4485 |
|
|
move.b _width,d2
|
| 4486 |
|
|
ext.w d2
|
| 4487 |
|
|
sub.w d0,d2 ; d2 = width-ndx
|
| 4488 |
|
|
cmp.w d2,d1
|
| 4489 |
|
|
blt .0039
|
| 4490 |
|
|
move.w d1,d3 ; d3 = nn
|
| 4491 |
|
|
sub.w d2,d3 ; d3 = nn-(width-ndx)
|
| 4492 |
|
|
move.b (a0,d3.w),(a0,d1.w)
|
| 4493 |
|
|
subi.w #1,d1
|
| 4494 |
|
|
bra .0040
|
| 4495 |
|
|
.0039
|
| 4496 |
|
|
tst.w d1
|
| 4497 |
|
|
bmi .0041
|
| 4498 |
|
|
move.b #' ',(a0,d1.w)
|
| 4499 |
|
|
subi.w #1,d1
|
| 4500 |
|
|
bra .0039
|
| 4501 |
|
|
.0041
|
| 4502 |
|
|
rts
|
| 4503 |
|
|
|
| 4504 |
|
|
;------------------------------------------------------------------------------
|
| 4505 |
|
|
; Pad the right side of the output string.
|
| 4506 |
|
|
;
|
| 4507 |
|
|
; Modifies:
|
| 4508 |
|
|
; d0
|
| 4509 |
|
|
; Returns:
|
| 4510 |
|
|
; d0 = length of string
|
| 4511 |
|
|
;------------------------------------------------------------------------------
|
| 4512 |
|
|
|
| 4513 |
|
|
; // pad right
|
| 4514 |
|
|
; if (width < 0) {
|
| 4515 |
|
|
; width = -width;
|
| 4516 |
|
|
; while (ndx < width) {
|
| 4517 |
|
|
; buf[ndx]=' ';
|
| 4518 |
|
|
; ndx++;
|
| 4519 |
|
|
; }
|
| 4520 |
|
|
; buf[ndx]='\0';
|
| 4521 |
|
|
; }
|
| 4522 |
|
|
; return (ndx);
|
| 4523 |
|
|
|
| 4524 |
|
|
_PadRight:
|
| 4525 |
|
|
tst.b _width
|
| 4526 |
|
|
bpl .0042
|
| 4527 |
|
|
neg.b _width
|
| 4528 |
|
|
move.l a0,d0
|
| 4529 |
|
|
sub.l #_fpBuf,d0 ; d0 = ndx
|
| 4530 |
|
|
.0044
|
| 4531 |
|
|
cmp.b _width,d0
|
| 4532 |
|
|
bge .0043
|
| 4533 |
|
|
move.b #' ',(a0,d0.w)
|
| 4534 |
|
|
addi.w #1,d0
|
| 4535 |
|
|
bra .0044
|
| 4536 |
|
|
.0043
|
| 4537 |
|
|
move.b #0,(a0,d0.w)
|
| 4538 |
|
|
.0042
|
| 4539 |
|
|
ext.w d0
|
| 4540 |
|
|
ext.l d0
|
| 4541 |
|
|
rts
|
| 4542 |
|
|
|
| 4543 |
|
|
;------------------------------------------------------------------------------
|
| 4544 |
|
|
;
|
| 4545 |
|
|
;------------------------------------------------------------------------------
|
| 4546 |
|
|
|
| 4547 |
|
|
_IsZero:
|
| 4548 |
|
|
clr.l d0 ; d0 = 0
|
| 4549 |
|
|
move.b _fpWork,d0 ; get sign, combo
|
| 4550 |
|
|
andi.b #$7f,d0 ; ignore sign bit
|
| 4551 |
|
|
or.b _fpWork+1,d0 ; check all bytes for zero
|
| 4552 |
|
|
or.w _fpWork+2,d0
|
| 4553 |
|
|
or.w _fpWork+4,d0
|
| 4554 |
|
|
or.w _fpWork+6,d0
|
| 4555 |
|
|
or.w _fpWork+8,d0
|
| 4556 |
|
|
or.w _fpWork+10,d0
|
| 4557 |
|
|
rts
|
| 4558 |
|
|
|
| 4559 |
|
|
;------------------------------------------------------------------------------
|
| 4560 |
|
|
; Output a string representation of a decimal floating point number to a
|
| 4561 |
|
|
; buffer.
|
| 4562 |
|
|
;
|
| 4563 |
|
|
; Register Usage
|
| 4564 |
|
|
; a0 = pointer to string buffer
|
| 4565 |
|
|
; d6 = exponent
|
| 4566 |
|
|
; Parameters:
|
| 4567 |
|
|
; fp0 = number to convert
|
| 4568 |
|
|
;------------------------------------------------------------------------------
|
| 4569 |
|
|
|
| 4570 |
|
|
_sprtflt:
|
| 4571 |
|
|
bsr _CheckNegative ; is number negative?
|
| 4572 |
|
|
bsr _CheckZero ; check for zero
|
| 4573 |
|
|
bsr _CheckNan ; check for Nan or infinity
|
| 4574 |
|
|
; Now the fun begins
|
| 4575 |
|
|
clr.l d6
|
| 4576 |
|
|
bsr _MakeBig
|
| 4577 |
|
|
bsr _LessThanDbl
|
| 4578 |
|
|
bsr _ComputeDigitsBeforeDecpt
|
| 4579 |
|
|
bsr _LeadingZero
|
| 4580 |
|
|
bsr _SpitOutDigits
|
| 4581 |
|
|
bsr _TrimTrailingZeros
|
| 4582 |
|
|
bsr _TrimTrailingPoint
|
| 4583 |
|
|
bsr _TrimDotZero
|
| 4584 |
|
|
bsr _ExtExpDigits ; extract exponent digits
|
| 4585 |
|
|
bsr _PadLeft ; pad the number to the left or right
|
| 4586 |
|
|
bra _PadRight
|
| 4587 |
|
|
|
| 4588 |
|
|
;------------------------------------------------------------------------------
|
| 4589 |
|
|
; Trap #15, function 39 - convert floating-point to string and display
|
| 4590 |
|
|
;
|
| 4591 |
|
|
; Parameters
|
| 4592 |
|
|
; a0 = pointer to buffer
|
| 4593 |
|
|
; fp0 = number to print
|
| 4594 |
|
|
; d1 = width of print field
|
| 4595 |
|
|
; d2 = precision
|
| 4596 |
|
|
; d3 = 'E' or 'e'
|
| 4597 |
|
|
;------------------------------------------------------------------------------
|
| 4598 |
|
|
|
| 4599 |
|
|
prtflt:
|
| 4600 |
|
|
movem.l d0/d1/d2/d3/d6/a1,-(a7)
|
| 4601 |
|
|
; fmove.p fp0,-(a7)
|
| 4602 |
|
|
move.l a1,a0 ; a0 = pointer to buffer to use
|
| 4603 |
|
|
move.b d1,_width
|
| 4604 |
|
|
move.l d2,_precision
|
| 4605 |
|
|
move.b d3,_E
|
| 4606 |
|
|
bsr _sprtflt
|
| 4607 |
|
|
bsr DisplayString
|
| 4608 |
|
|
; fmove.p (a7)+,fp0
|
| 4609 |
|
|
movem.l (a7)+,d0/d1/d2/d3/d6/a1
|
| 4610 |
|
|
rts
|
| 4611 |
|
|
|
| 4612 |
|
|
;==============================================================================
|
| 4613 |
|
|
;==============================================================================
|
| 4614 |
|
|
;------------------------------------------------------------------------------
|
| 4615 |
|
|
;------------------------------------------------------------------------------
|
| 4616 |
|
|
|
| 4617 |
2 |
robfinch |
InitIRQ:
|
| 4618 |
|
|
moveq #6,d0
|
| 4619 |
|
|
lea KeybdIRQ,a0
|
| 4620 |
|
|
bsr InstallIRQ
|
| 4621 |
|
|
lea TickIRQ,a0
|
| 4622 |
|
|
bsr InstallIRQ
|
| 4623 |
|
|
moveq #3,d0
|
| 4624 |
|
|
lea SerialIRQ,a0
|
| 4625 |
|
|
; fall through
|
| 4626 |
|
|
|
| 4627 |
|
|
;------------------------------------------------------------------------------
|
| 4628 |
|
|
; Install an IRQ handler.
|
| 4629 |
|
|
;
|
| 4630 |
|
|
; Parameters:
|
| 4631 |
|
|
; d0 = IRQ level
|
| 4632 |
|
|
; a0 = pointer to IRQ routine
|
| 4633 |
|
|
; Returns:
|
| 4634 |
|
|
; d1 = -1 if successfully added, 0 otherwise
|
| 4635 |
|
|
; nf = 1, zf = 0 if successfully added, otherwise nf = 0, zf = 1
|
| 4636 |
|
|
;------------------------------------------------------------------------------
|
| 4637 |
|
|
|
| 4638 |
|
|
InstallIRQ:
|
| 4639 |
|
|
move.l d0,-(a7) ; save working register
|
| 4640 |
|
|
lea InstalledIRQ,a1 ; a1 points to installed IRQ list
|
| 4641 |
|
|
lsl.w #5,d0 ; multiply by 8 long words per IRQ level
|
| 4642 |
|
|
.nextSpot:
|
| 4643 |
|
|
cmpa.l (a1,d0.w),a0 ; Is the IRQ already installed?
|
| 4644 |
|
|
beq.s .found
|
| 4645 |
|
|
tst.l (a1,d0.w) ; test for an empty spot
|
| 4646 |
|
|
beq.s .foundSpot
|
| 4647 |
|
|
addi.w #4,d0 ; increment to next slot
|
| 4648 |
|
|
move.w d0,d1
|
| 4649 |
|
|
andi.w #$1F,d1 ; check to see if spots exhausted
|
| 4650 |
|
|
beq.s .noEmpties
|
| 4651 |
|
|
bra.s .nextSpot
|
| 4652 |
|
|
.foundSpot:
|
| 4653 |
|
|
move.l a0,(a1,d0.w) ; add IRQ routine to table
|
| 4654 |
|
|
.found:
|
| 4655 |
|
|
move.l (a7)+,d0
|
| 4656 |
|
|
moveq #-1,d1 ; return success
|
| 4657 |
|
|
rts
|
| 4658 |
|
|
.noEmpties:
|
| 4659 |
|
|
move.l (a7)+,d0
|
| 4660 |
|
|
moveq #0,d1 ; return failed to add
|
| 4661 |
|
|
rts
|
| 4662 |
|
|
|
| 4663 |
|
|
|
| 4664 |
|
|
;------------------------------------------------------------------------------
|
| 4665 |
|
|
;------------------------------------------------------------------------------
|
| 4666 |
|
|
|
| 4667 |
|
|
TickIRQ:
|
| 4668 |
|
|
move.w #$2600,sr ; disable lower level IRQs
|
| 4669 |
|
|
movem.l d1/d2/a0,-(a7)
|
| 4670 |
|
|
; ToDo: detect a tick interrupt
|
| 4671 |
|
|
; move.l PLIC+$00,d1
|
| 4672 |
|
|
; rol.l #8,d1
|
| 4673 |
|
|
; cmpi.b #29,d1
|
| 4674 |
|
|
; bne.s .notTick
|
| 4675 |
|
|
movec coreno,d1 ; d1 = core number
|
| 4676 |
|
|
cmpi.b #2,d1
|
| 4677 |
|
|
bne.s .0001
|
| 4678 |
|
|
move.l #$1D000000,PLIC+$14 ; reset edge sense circuit
|
| 4679 |
|
|
.0001:
|
| 4680 |
|
|
move.l TextScr,a0 ; a0 = screen address
|
| 4681 |
|
|
move.l (a0),d2
|
| 4682 |
|
|
rol.w #8,d2 ; reverse byte order of d2
|
| 4683 |
|
|
swap d2
|
| 4684 |
|
|
rol.w #8,d2
|
| 4685 |
|
|
addi.b #'0',d1 ; binary to ascii core number
|
| 4686 |
|
|
add.b d2,d1
|
| 4687 |
|
|
rol.w #8,d1 ; put bytes back in order
|
| 4688 |
|
|
swap d1
|
| 4689 |
|
|
rol.w #8,d1
|
| 4690 |
|
|
move.l d1,4(a0) ; update onscreen IRQ flag
|
| 4691 |
|
|
addi.l #1,(a0) ; flashy colors
|
| 4692 |
|
|
; addi.l #1,40(a0) ; nice effect
|
| 4693 |
|
|
bsr ReceiveMsg
|
| 4694 |
|
|
movem.l (a7)+,d1/d2/a0
|
| 4695 |
|
|
rte
|
| 4696 |
|
|
;.notTick:
|
| 4697 |
|
|
; movem.l (a7)+,d1/a0
|
| 4698 |
|
|
; rte
|
| 4699 |
|
|
;------------------------------------------------------------------------------
|
| 4700 |
|
|
;------------------------------------------------------------------------------
|
| 4701 |
|
|
|
| 4702 |
|
|
irq3_rout:
|
| 4703 |
|
|
movem.l d0/d1/a0/a1,-(a7)
|
| 4704 |
|
|
lea InstalledIRQ+8*4*3,a0
|
| 4705 |
|
|
bra irq_rout
|
| 4706 |
|
|
|
| 4707 |
|
|
irq6_rout:
|
| 4708 |
|
|
movem.l d0/d1/a0/a1,-(a7)
|
| 4709 |
|
|
lea InstalledIRQ+8*4*6,a0
|
| 4710 |
|
|
irq_rout:
|
| 4711 |
|
|
moveq #7,d0
|
| 4712 |
|
|
.nextHandler:
|
| 4713 |
|
|
move.l (a0)+,a1
|
| 4714 |
|
|
beq.s .0003
|
| 4715 |
|
|
jsr (a1)
|
| 4716 |
|
|
tst.l d1 ; was IRQ handled?
|
| 4717 |
|
|
bmi.s .0002 ; first one to return handled quits loop
|
| 4718 |
|
|
.0003:
|
| 4719 |
|
|
dbra d0,.nextHandler
|
| 4720 |
|
|
.0002:
|
| 4721 |
|
|
movem.l (a7)+,d0/d1/a0/a1 ; return
|
| 4722 |
|
|
|
| 4723 |
|
|
SpuriousIRQ:
|
| 4724 |
|
|
rte
|
| 4725 |
|
|
|
| 4726 |
|
|
; bsr KeybdIRQ
|
| 4727 |
|
|
; tst.l d1 ; handled by KeybdIRQ?
|
| 4728 |
|
|
; bmi.s .0002 ; if yes, go return
|
| 4729 |
|
|
;.0001:
|
| 4730 |
|
|
; move.l #$1D000000,PLIC+$14 ; reset edge sense circuit
|
| 4731 |
|
|
; move.l TextScr,a0 ; a0 = screen address
|
| 4732 |
|
|
; addi.l #1,40(a0) ; update onscreen IRQ flag
|
| 4733 |
|
|
;.0002:
|
| 4734 |
|
|
; movem.l (a7)+,d0/d1/a0/a1 ; return
|
| 4735 |
|
|
; rte
|
| 4736 |
|
|
|
| 4737 |
|
|
nmi_rout:
|
| 4738 |
|
|
movem.l d0/d1/a0,-(a7)
|
| 4739 |
|
|
move.b #'N',d1
|
| 4740 |
|
|
bsr DisplayChar
|
| 4741 |
|
|
movem.l (a7)+,d0/d1/a0 ; return
|
| 4742 |
|
|
rte
|
| 4743 |
|
|
|
| 4744 |
|
|
brdisp_trap:
|
| 4745 |
|
|
movem.l d0/d1/d2/d3/d4/d5/d6/d7/a0/a1/a2/a3/a4/a5/a6/a7,Regsave
|
| 4746 |
|
|
move.w (a7)+,Regsave+$40
|
| 4747 |
|
|
move.l (a7)+,Regsave+$44
|
| 4748 |
|
|
move.l #$40FFC,a7 ; reset stack pointer
|
| 4749 |
|
|
move.w #$2500,sr ; enable interrupts
|
| 4750 |
|
|
lea msg_bad_branch_disp,a1
|
| 4751 |
|
|
bsr DisplayString
|
| 4752 |
|
|
bsr DisplaySpace
|
| 4753 |
|
|
move.l Regsave+$44,d1 ; exception address
|
| 4754 |
|
|
bsr DisplayTetra ; and display it
|
| 4755 |
|
|
; move.l (sp)+,d1 ; pop format word 68010 mode only
|
| 4756 |
|
|
bra cmdDumpRegs
|
| 4757 |
|
|
|
| 4758 |
|
|
illegal_trap:
|
| 4759 |
|
|
addq #2,sp ; get rid of sr
|
| 4760 |
|
|
move.l (sp)+,d1 ; pop exception address
|
| 4761 |
|
|
bsr DisplayTetra ; and display it
|
| 4762 |
|
|
lea msg_illegal,a1 ; followed by message
|
| 4763 |
|
|
bsr DisplayString
|
| 4764 |
|
|
.0001:
|
| 4765 |
|
|
bra .0001
|
| 4766 |
|
|
bra Monitor
|
| 4767 |
|
|
|
| 4768 |
|
|
io_irq:
|
| 4769 |
|
|
addq #2,sp
|
| 4770 |
|
|
move.l (sp)+,d1
|
| 4771 |
|
|
bsr DisplayTetra
|
| 4772 |
|
|
lea msg_io_access,a1
|
| 4773 |
|
|
bsr DisplayString
|
| 4774 |
|
|
bra cmdDumpRegs
|
| 4775 |
|
|
|
| 4776 |
|
|
; -----------------------------------------------------------------------------
|
| 4777 |
|
|
; -----------------------------------------------------------------------------
|
| 4778 |
|
|
|
| 4779 |
|
|
msg_start:
|
| 4780 |
|
|
dc.b "Femtiki rf68k Multi-core OS Starting",LF,CR,0
|
| 4781 |
|
|
; dc.b "rf68k System Starting",CR,LF,0
|
| 4782 |
|
|
msg_core_start:
|
| 4783 |
|
|
dc.b " core starting",CR,LF,0
|
| 4784 |
|
|
msg_illegal:
|
| 4785 |
|
|
dc.b " illegal opcode",CR,LF,0
|
| 4786 |
|
|
msg_bad_branch_disp:
|
| 4787 |
|
|
dc.b " branch selfref: ",0
|
| 4788 |
|
|
msg_test_done:
|
| 4789 |
|
|
dc.b " CPU test done.",0
|
| 4790 |
|
|
msg_io_access
|
| 4791 |
|
|
dc.b " unpermitted access to I/O",0
|
| 4792 |
|
|
|
| 4793 |
|
|
|
