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[/] [System09/] [trunk/] [src/] [sys09bug/] [sys09270.lst] - Rev 169
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Assembler release DWC_2.0 version 2.11
May 6, 2004 (c) Motorola (free ware)
0001 NAM SYS09BUG FOR TERASIC CYCLONE II DE2-70
0000 INCLUDE "opt_270.asm"
0001
0002 *
0003 ***************************************************
0004 * OPTION SWITCHES
0005 ***************************************************
0006 *
0007 *
0008 ** THE CONTROL PORT CAN ONLY BE ONE OF THESE
0009 ** NOTE THAT THE ACIA WILL ALWAYS BE PRESET
0010 ** FOR LOADING AND SAVING S1 RECORDS
0011 *
0012 *SWTOPT EQU $FF SWTP ACIA SERIAL CONTROL PORT
0013 *ADSOPT EQU $FF ADS6809 & DG640 VIDEO DISPAY
0014 *B3SOPT EQU $FF B3-SPARTAN2 FPGA VIDEO & PS2 KEYBOARD
0015 *B5XOPT EQU $FF B5-X300 FPGA VIDEO & PS2 KEYBOARD
0016 *S3SOPT EQU $FF SPARTAN3 STARTER FPGA VIDEO & PS2 KEYBOARD
0017 *S3EOPT EQU $FF SPARTAN3E STARTER
0018 *XESOPT EQU $FF XESS XSA-3S100 & XST-3.0
0019 00FF DE270OPT EQU $FF CYCLONE II DE2-70
0020 *
0002 END
0000 INCLUDE "sys09equ.asm"
0001 *
0002 ***************************************************
0003 * MEMORY MAP EQUATES *
0004 ***************************************************
0005 E000 MONIO EQU $E000 I/O SPACE
0006 IFD B3SOPT
0007 MONEXT EQU $F000 START OF EXTENDED COMMANDS
0008 EXTCMD EQU $00 EXTENDED OFFSET
0009 ENDIF B3SOPT
0009 ENDIF B3SOPT
0010 IFD S3EOPT
0011 MONRAM EQU $7FC0
0012 ELSE
0013 DFC0 MONRAM EQU $DFC0 STACK SPACE
0014 ENDIF S3EOPT
0015 F800 MONROM EQU $F800 START OF ROM
0016 IFD S3SOPT
0017 MONEXT EQU $F000 START OF EXTENDED COMMANDS
0018 EXTCMD EQU $00 EXTENDED OFFSET
0019 ENDIF S3SOPT
0019 ENDIF S3SOPT
0020 IFD XESOPT
0021 MONEXT EQU $F000 START OF EXTENDED COMMANDS
0022 EXTCMD EQU $00 EXTENDED OFFSET
0023 ENDIF XESOPT
0023 ENDIF XESOPT
0024 IFD DE270OPT
0025 F000 MONEXT EQU $F000 START OF EXTENDED COMMANDS
0026 0000 EXTCMD EQU $00 EXTENDED OFFSET
0027 ENDIF DE270OPT
0028 **************************************************
0029 **************************************************
0030
0031 IFD SWTOPT
0032 *
0033 * SOUTH WEST TECHNICAL PRODUCTS COMPUTER
0034 *
0035 ACIAOPT EQU $FF ACIA AT PORT 0
0036 DMAFOPT EQU $FF DMAF2 8" FLOPPY DISK BOOT
0037 MFDCOPT EQU $FF MINIFLOPPY 5.25" DISK BOOT
0038 DATOPT EQU $FF DYNAMIC ADDRESS TRANSLATION
0039 ENDIF
0039 ENDIF
0040 *
0041 IFD ADSOPT
0042 *
0043 * ACKERMAN DIGITAL ADS6809
0044 *
0045 DG640OPT EQU $FF DG640 VDU AT $E800
0046 *RTCOPT EQU $FF REAL TIME CLOCK
0047 PRTOPT EQU $FF PRINTER DRIVERS
0048 MFDCOPT EQU $FF MINIFLOPPY 5.25" DISK BOOT
0049 ENDIF ADSOPT
0049 ENDIF ADSOPT
0050 *
0051 IFD B3SOPT
0052 *
0053 * BURCHED SPARTAN 2 B3+
0054 *
0055 ACIAOPT EQU $FF ACIA AT PORT 0
0056 PS2OPT EQU $FF PS2 KEYBOARD AT $E020
0057 VDUOPT EQU $FF VDU AT $E030
0058 IDEOPT EQU $FF IDE AT $E100
0059 DATOPT EQU $FF DYNAMIC ADDRESS TRANSLATION
0060 HFCOPT EQU $FF HARDWARE FLOW CONTROL
0061 ENDIF B3SOPT
0061 ENDIF B3SOPT
0062 *
0063 IFD B5XOPT
0064 *
0065 * BURCHED SPARTAN 2 B5-X300
0066 *
0067 ACIAOPT EQU $FF ACIA AT PORT 0
0068 PS2OPT EQU $FF PS2 KEYBOARD AT $E020
0069 VDUOPT EQU $FF VDU AT $E030
0070 CF8OPT EQU $FF COMPACT FLASH AT $E040
0071 DATOPT EQU $FF DYNAMIC ADDRESS TRANSLATION
0072 HFCOPT EQU $FF HARDWARE FLOW CONTROL
0073 ENDIF B5XOPT
0073 ENDIF B5XOPT
0074 *
0075 IFD S3SOPT
0076 *
0077 * DIGILENT SPARTAN 3 STARTER
0078 *
0079 ACIAOPT EQU $FF ACIA AT PORT 0
0080 PS2OPT EQU $FF PS2 KEYBOARD AT $E020
0081 VDUOPT EQU $FF VDU AT $E030
0082 CF8OPT EQU $FF COMPACT FLASH AT $E040
0083 DATOPT EQU $FF DYNAMIC ADDRESS TRANSLATION
0084 EXTOPT EQU $FF EXTENDED COMMANDS
0085 ENDIF S3SOPT
0085 ENDIF S3SOPT
0086 *
0087 IFD S3EOPT
0088 *
0089 * DIGILENT SPARTAN 3E STARTER
0090 *
0091 ACIAOPT EQU $FF ACIA AT PORT 0
0092 PS2OPT EQU $FF PS2 KEYBOARD AT $E020
0093 VDUOPT EQU $FF VDU AT $E030
0094 TRAOPT EQU $FF PIA TRACE TIMER
0095 ENDIF S3EOPT
0095 ENDIF S3EOPT
0096 *
0097 IFD XESOPT
0098 *
0099 * XESS SPARTAN 3 XSA-3S1000 & XST-3.0
0100 *
0101 ACIAOPT EQU $FF ACIA AT PORT 0
0102 PS2OPT EQU $FF PS2 KEYBOARD AT $E020
0103 VDUOPT EQU $FF VDU AT $E030
0104 IDEOPT EQU $FF IDE AT $E100
0105 DATOPT EQU $FF DYNAMIC ADDRESS TRANSLATION
0106 HFCOPT EQU $FF HARDWARE FLOW CONTROL
0107 EXTOPT EQU $FF EXTENDED COMMANDS
0108 ENDIF XESOPT
0108 ENDIF XESOPT
0109 *
0110 IFD DE270OPT
0111 *
0112 * TERASIC CYCLONE 2 DE2-70
0113 *
0114 00FF ACIAOPT EQU $FF ACIA AT PORT 0
0115 00FF PS2OPT EQU $FF PS2 KEYBOARD AT $E020
0116 00FF VDUOPT EQU $FF VDU AT $E030
0117 00FF CF8OPT EQU $FF COMPACT FLASH AT $E040
0118 00FF DATOPT EQU $FF DYNAMIC ADDRESS TRANSLATION
0119 00FF EXTOPT EQU $FF EXTENDED COMMANDS
0120 ENDIF DE270OPT
0121 *
0122 *
0123 IFD ACIAOPT
0124 *
0125 ***************************************************
0126 * SERIAL PORT *
0127 ***************************************************
0128 *
0129 ** ACIA SITS ON PORT 0
0130 *
0131 E000 ACIAS EQU MONIO+$00 CONTROL PORT
0132 *
0133 ENDIF ACIAOPT
0134 IFD MFDCOPT
0135 *
0136 ***************************************************
0137 * MINIFLOPPY DRIVE *
0138 ***************************************************
0139 *
0140 ** FLOPPY DISK CONTROLLER SITS ON PORT 1
0141 *
0142 DRVFDC EQU MONIO+$14
0143 CMDFDC EQU MONIO+$18
0144 SECFDC EQU MONIO+$1A
0145 DATFDC EQU MONIO+$1B
0146 ENDIF MFDCOPT
0146 ENDIF MFDCOPT
0147 IFD PS2OPT
0148 *
0149 ***************************************************
0150 * VDU8 PS/2 KEYBOARD PORT *
0151 ***************************************************
0152 *
0153 ** KEYBOARD SITS ON PORT 2
0154 *
0155 E020 PS2KBD EQU MONIO+$20 PS/2 KEYBOARD PORT
0156 ENDIF PS2OPT
0157 IFD VDUOPT
0158 *
0159 ***************************************************
0160 * VDU8 DISPLAY DRIVER EQUATES *
0161 ***************************************************
0162 *
0163 ** VDU8 DISPLAY SITS ON PORT 3
0164 *
0165 E030 VDU EQU MONIO+$30
0166 0000 VDUCHR EQU 0 CHARACTER REGISTER
0167 0001 VDUATT EQU 1 ATTRIBUTE REGISTER
0168 0002 VDUCOL EQU 2 CURSOR COLUMN
0169 0003 VDUROW EQU 3 CURSOR ROW
0170 0004 VDUOFF EQU 4 ROW OFFSET
0171 *
0172 0050 LINLEN EQU 80 LENGTH OF A LINE
0173 0019 NUMLIN EQU 25 NUMBER OF LINES
0174 ENDIF VDUOPT
0175 *
0176 IFD CF8OPT
0177 *
0178 ***************************************************
0179 * COMPACT FLASH EQUATES 8 BIT TRANSFER *
0180 ***************************************************
0181 *
0182 ** COMPACT FLASH SITS AT PORT 4
0183 *
0184 E040 CF_BASE EQU MONIO+$40
0185 E040 CF_DATA EQU CF_BASE+0
0186 E041 CF_ERROR EQU CF_BASE+1 ; read error
0187 E041 CF_FEATURE EQU CF_BASE+1 ; write feature
0188 E042 CF_SECCNT EQU CF_BASE+2
0189 E043 CF_SECNUM EQU CF_BASE+3
0190 E044 CF_CYLLO EQU CF_BASE+4
0191 E045 CF_CYLHI EQU CF_BASE+5
0192 E046 CF_HEAD EQU CF_BASE+6
0193 E047 CF_STATUS EQU CF_BASE+7 ; read status
0194 E047 CF_COMAND EQU CF_BASE+7 ; write command
0195 *
0196 * Command Equates
0197 *
0198 0020 CMDREAD EQU $20 ; Read Single sector
0199 0030 CMDWRITE EQU $30 ; Write Single sector
0200 00EF CMDFEATURE EQU $EF
0201 0001 FEAT8BIT EQU $01 ; enable 8 bit transfers
0202 00E0 HEADLBA EQU $E0
0203 *
0204 * Status bit equates
0205 *
0206 0080 BUSY EQU $80
0207 0040 DRDY EQU $40
0208 0008 DRQ EQU $08
0209 0001 ERR EQU $01
0210 *
0211 ENDIF CF8OPT
0212 *
0213 IFD IDEOPT
0214 *
0215 ***************************************************
0216 * COMPACT FLASH EQUATES 16 BIT TRANSFER (XESS) *
0217 ***************************************************
0218 *
0219 ** COMPACT FLASH SITS AT PORT 4
0220 *
0221 CF_BASE EQU MONIO+$0100
0222 CF_DATA EQU CF_BASE+0
0223 CF_ERROR EQU CF_BASE+2 ; read error
0224 CF_FEATURE EQU CF_BASE+2 ; write feature
0225 CF_SECCNT EQU CF_BASE+4
0226 CF_SECNUM EQU CF_BASE+6
0227 CF_CYLLO EQU CF_BASE+8
0228 CF_CYLHI EQU CF_BASE+10
0229 CF_HEAD EQU CF_BASE+12
0230 CF_STATUS EQU CF_BASE+14 ; read status
0231 CF_COMAND EQU CF_BASE+14 ; write command
0232 CF_AUX EQU CF_BASE+30
0233 *
0234 * Command Equates
0235 *
0236 CMDREAD EQU $20 ; Read Single sector
0237 CMDWRITE EQU $30 ; Write Single sector
0238 AUXRESET EQU $06 ; Reset IDE
0239 AUXRSTREL EQU $02 ; Reset release IRQ masked
0240 HEADLBA EQU $E0
0241 *
0242 * Status bit equates
0243 *
0244 BUSY EQU $80
0245 DRDY EQU $40
0246 DRQ EQU $08
0247 ERR EQU $01
0248 *
0249 ENDIF CF8OPT
0249 ENDIF CF8OPT
0250 *
0251 IFD RTCOPT
0252 *
0253 **************************************************
0254 * MM58167A REAL TIME CLOCK MEMORY MAP:
0255 **************************************************
0256 *
0257 ** REAL TIME CLOCK SITS ON PORT 4 AND PORT 5
0258 *
0259 CLOCK EQU MONIO+$40 CLOCK BASE ADDRESS AND REGISTERS
0260 *
0261 * COUNTER AND COMPARITOR REGISTERS:
0262 *
0263 * Both the Clock Counter and Clock Comparitor
0264 * consist of 8 registers for holding the time.
0265 * The register offsets from the Counter and
0266 * Comparitor registers are listed above.
0267 *
0268 COUNTR EQU CLOCK+0
0269 CMPRAM EQU CLOCK+8 COMPARITOR REGISTERS
0270 *
0271 * CLOCK REGISTER OFFSETS:
0272 * These register offsets are used for the CLOCK
0273 * and comparitor ram CMPRAM.
0274 *
0275 S10000 EQU 0 TEN THOUNSANDTHS OF SECONDS
0276 S100 EQU 1 HUNDRETHS AND TENTHS OF SECONDS
0277 SECOND EQU 2
0278 MINUIT EQU 3
0279 HOUR EQU 4
0280 WKDAY EQU 5
0281 MTHDAY EQU 6
0282 MONTH EQU 7
0283 *
0284 * INTERRUPT OUTPUT REGISTERS:
0285 *
0286 * An interrupt output may be generated at the
0287 * following rates by setting the appropriate bit
0288 * in the Interrupt Control Register (CINTCR).
0289 * The Interrupt Status Register (CINTSR) must be
0290 * read to clear the interrupt and will return
0291 * the source of the interrupt.
0292 *
0293 * 1/Month Bit 7
0294 * 1/Week Bit 6
0295 * 1/Day Bit 5
0296 * 1/Hour Bit 4
0297 * 1/Minuite Bit 3
0298 * 1/Second Bit 2
0299 * 10/Second Bit 1
0300 * Comparitor Bit 0
0301 *
0302 CINTSR EQU CLOCK+16 INTERRUPT STATUS REGISTER
0303 CINTCR EQU CLOCK+17 INTERRUPT CONTROL REGISTER
0304 *
0305 * COUNTER AND RAM RESETS; GO COMMAND.
0306 *
0307 * The counter and comparitor may be reset
0308 * by writing $FF into CTRRES and CMPRES
0309 * respectivly.
0310 * A write to the Go command register (GOCMND)
0311 * will reset the 1/1000ths, 1/100ths and 1/10ths
0312 * of a second counter.
0313 *
0314 CTRRES EQU CLOCK+18 COUNTER RESET
0315 CMPRES EQU CLOCK+19 COMPARITOR RAM RESET
0316 GOCMND EQU CLOCK+21 GO COMMAND
0317 *
0318 * CLOCK STATUS REGISTER.
0319 *
0320 * The counter takes 61 usec. to rollover for
0321 * every 1KHz clock pulse. If the Status bit is
0322 * set after reading the counter, the counter
0323 * should be re-read to ensure the time is correct.
0324 *
0325 CLKSTA EQU CLOCK+20 STATUS BIT
0326 SBYINT EQU CLOCK+22 STANDBY INTERRUPT
0327 TSTMOD EQU CLOCK+31 TEST MODE REGISTER
0328 ENDIF RTCOPT
0328 ENDIF RTCOPT
0329 *
0330 IFD TRAOPT
0331 *
0332 **************************************************
0333 * PIA INTERRUPT TIMER
0334 **************************************************
0335 *
0336 ** PIA INTERRUPT TIMER SITS ON PORT 7
0337 *
0338 ** PIA TIMER FOR SINGLE STEP / TRACE
0339 *
0340 * TADATA = Output = Timer preset register
0341 * TACTRL - CA1 = input = rising edge = NMI
0342 * - CA2 = Output = Timer Reset (Active High)
0343 * TBDATA = Input = Timer read back register
0344 * TBCTRL - CB1 = input = rising edge = FIRQ
0345 * - CB2 = output = strobe low on write to TBDATA = Timer Preset
0346 *
0347 * CRA0 = 0 CA1 IRQ DISAB, CRA0 = 1 CA1 IRQ ENAB
0348 * CRA1 = 1 CA1 Rising edge IRQ
0349 * CRA2 = 0 TADATA = Data Direction, CRA2 = 1 TADATA = I/O Register
0350 * CRA3 = 0 CA2 = 0 output, CRA3 = 1 CA2 = 1
0351 * CRA4 = 1 ] CA2 = Set/Reset output
0352 * CRA5 = 1 ]
0353 * CRA6 = X CA2 Input Interrupt Flag
0354 * CRA7 = X CA1 Interrupt Flag
0355 *
0356 * CRB0 = 0 CB1 IRQ DISAB, CRB0 = 1 CA1 IRQ ENAB
0357 * CRB1 = 1 CB1 Rising edge IRQ
0358 * CRB2 = 0 TBDATA = Data Direction, CRB2 = 1 TBDATA = I/O Register
0359 * CRB3 = 0 CB2 = 0 output, CRB3 = 1 CB2 = 1
0360 * CRB4 = 1 ] CB2 = Set/Reset output
0361 * CRB5 = 1 ]
0362 * CRB6 = X CB2 Input Interrupt Flag
0363 * CRB7 = X CB1 Interrupt Flag
0364 *
0365 * DDRA = 0 TADATA = Input, DDRA = 1 TADATA = Output
0366 * DDRB = 0 TBDATA = Input, DDRB = 1 TBDATA = Output
0367 *
0368 TADATA EQU MONIO+$70 Timer preset port
0369 TACTRL EQU MONIO+$71
0370 TBDATA EQU MONIO+$72 Timer read back port
0371 TBCTRL EQU MONIO+$73
0372 *
0373 TRADEL EQU 13 Number of E cycles for RTI (May need to be fudged)
0374 *
0375 ENDIF TRAOPT
0375 ENDIF TRAOPT
0376 IFD ADSOPT
0377 *
0378 ***************************************************
0379 * SERIAL PORT FOR DG640 *
0380 ***************************************************
0381 *
0382 ** SET UP FOR ACKERMAN DIGITAL ADS6809
0383 ** THE ADS6809 S100 BOAD HAS AN ON BOARD ACIA
0384 *
0385 ACIAS EQU MONIO+$400 CONTROL PORT
0386 *
0387 ENDIF ADSOPT
0387 ENDIF ADSOPT
0388 IFD PRTOPT
0389 *
0390 ***************************************************
0391 * PRINTER INTERFACE *
0392 ***************************************************
0393 *
0394 PADATA EQU MONIO+$404
0395 PACTRL EQU MONIO+$405
0396 PBDATA EQU MONIO+$406
0397 PBCTRL EQU MONIO+$407
0398 *
0399 ** CB1 ACK. I/P
0400 ** CB2 STB. O/P
0401 ** PB0 - PB7 DATA 1 - 8 O/P
0402 ** PORT A BIT ASSIGNMENT
0403 *
0404 PBUSY EQU $80 I/P
0405 PEMPTY EQU $40 I/P
0406 SELECT EQU $20 I/P
0407 PERROR EQU $10 I/P
0408 PRESET EQU %00000100 O/P PA3 = 0
0409 AUTOFD EQU %00001000 O/P PA2 = 0
0410 DIRMSK EQU %00001100
0411 ENDIF PRTOPT
0411 ENDIF PRTOPT
0412 IFD DG640OPT
0413 *
0414 ***************************************************
0415 * DG640 MEMORY MAPPED DISPLAY DRIVER VARIABLES *
0416 ***************************************************
0417 *
0418 ** VIDEO DISPLAY DEFINITIONS
0419 *
0420 SCREEN EQU MONIO+$0800 START OF SCREEN MEMORY
0421 LINLEN EQU 64 LENGTH OF A LINE
0422 NUMLIN EQU 16 NUMBER OF LINES
0423 SCNLEN EQU $400 LENGTH OF SCREEN
0424 ENDIF DG640OPT
0424 ENDIF DG640OPT
0425 *
0426 IFD DMAFOPT
0427 *
0428 ***************************************************
0429 * DMAF2 8" DRIVE *
0430 ***************************************************
0431 *
0432 ADDREG EQU $F000 ADDRESS REGISTER
0433 CNTREG EQU $F002 COUNT REGISTER
0434 CCREG EQU $F010 CHANNEL CONTROL REGISTER
0435 PRIREG EQU $F014 DMA PRIORITY REGISTER
0436 AAAREG EQU $F015 ???
0437 BBBREG EQU $F016 ???
0438 COMREG EQU $F020 1791 COMMAND REGISTER
0439 SECREG EQU $F022 SECTOR REGISTER
0440 DRVREG EQU $F024 DRIVE SELECT LATCH
0441 CCCREG EQU $F040 ???
0442 ENDIF DMAFOPT
0442 ENDIF DMAFOPT
0443 IFD DATOPT
0444 **************************************************
0445 * DYNAMIC ADDRESS TRANSLATION REGISTERS *
0446 **************************************************
0447 *
0448 FFF0 IC11 EQU $FFF0 DAT RAM CHIP
0449 55AA TSTPAT EQU $55AA TEST PATTERN
0450 ENDIF DATOPT
0451 *
0003 END
0000 INCLUDE "sys09bug.asm"
0001 * NAM SYS09BUG12 SYSTEM09 MONITOR
0002 OPT l
sys09bug.asm page 2
0004 *
0005 * MONITOR PROGRAM FOR THE SOUTHWEST TECHNICAL
0006 * PRODUCTS MP-09 CPU BOARD AS COMMENTED BY....
0007 *
0008 * ALLEN CLARK WALLACE WATSON
0009 * 2502 REGAL OAKS LANE 4815 EAST 97th AVE.
0010 * LUTZ, FLA. 33549 TEMPLE TERRACE, FLA. 33617
0011 * PH. 813-977-0347 PH. 813-985-1359
0012 *
0013 * MODIFIED TO SBUG09 VER 1.8 BY: RANDY JARRETT
0014 * 2561 NANTUCKET DR APT. E
0015 * ATLANTA, GA 30345
0016 * PH. 404-320-1043
0017 *
0018 * MODIFIED TO SYS09BUG VER 1.0
0019 * FOR: SYSTEM09 FPGA SYSTEM
0020 * BY: JOHN KENT
0021 * DATE: 21ST NOVEMBER 2006
0022 * REMOVED: DISK BOOTS
0023 * MEMORY TEST
0024 * ADDED: ADM3A VDU DRIVER
0025 *
0026 * MODIFIED TO SYS09BUG VER 1.1
0027 * BY: JOHN KENT
0028 * DATE: 7TH JANUARY 2007
0029 * ADDED: 'U' USER EXTENTION COMMANDS AT $F000
0030 * CONDITIONAL ASSEMBLY OF FLOPPY BOOTS
0031 * AND REALTIME CLOCK
0032 *
0033 * MODIFIED TO SYS09BUG VER 1.2
0034 * BY: JOHN KENT
0035 * DATE: 21ST MAY 2007
0036 * ADDED: COMPACT FLASH BOOT TO FPGA VERSION
0037 * REMOVED PORT REDIRECTION ON PUNCH & LOAD
0038 *
0039 * Modified to SYS09BUG VER 1.3
0040 * BY: JOHN KENT
0041 * DATE: 8TH JAN 2008
0042 * ADDED: CONDITIONALS FOR SPARTAN3E STARTER BOARD
0043 * WITH ONLY 32K OF RAM
0044 *
0045 * Modified to SYS09BUG VER 1.4
0046 * BY: JOHN KENT
0047 * DATE: 3RD FEB 2008
0048 * ADDED: CONDITIONALS FOR XESS BOARD WITH IDE
0049 * SEPERATE CONDITIONAL FOR S3 STARTER AND B5-X300
0050 * 16 BIT IDE DISK BOOT STRAP ROUTINE
0051 *
0052 * Modified to SYS09BUG VER 1.5
0053 * BY: JOHN KENT
0054 * DATE: 7TH SEP 2008
0055 * ADDED: ADDED "B3-S2+" STRING
0056 *
0057 * Modified to SYS09BUG VER 1.6
0058 * BY: JOHN KENT
0059 * DATE: 2ND DEC 2008
0060 * ADDED: ADDED HARDWARE FLOW CONTROL
0061 *
0062 * CHANGED: SEPARARTED OPTIONS EQUATES AND BODY INTO SEPARATE FILES
0063 *
0064 * Modified to SYS09BUG VER 1.7
0065 * BY: JOHN KENT
0066 * DATE: 16TH OCT 2010
0067 * ADDED: "DE2-70" STRING
0068 *
0069 * *** COMMANDS ***
0070 *
0071 * CONTROL A = ALTER THE "A" ACCUMULATOR
0072 * CONTROL B = ALTER THE "B" ACCUMULATOR
0073 * CONTROL C = ALTER THE CONDITION CODE REGISTER
0074 * CONTROL D = ALTER THE DIRECT PAGE REGISTER
0075 * CONTROL P = ALTER THE PROGRAM COUNTER
0076 * CONTROL U = ALTER USER STACK POINTER
0077 * CONTROL X = ALTER "X" INDEX REGISTER
0078 * CONTROL Y = ALTER "Y" INDEX REGISTER
0079 * B hhhh = SET BREAKPOINT AT LOCATION $hhhh
0080 * D = 5.25" MINIFLOPPY BOOT
0081 * E ssss-eeee = EXAMINE MEMORY
0082 * FROM STARTING ADDRESS ssss
0083 * TO ENDING ADDRESS eeee.
0084 * G = CONTINUE EXECUTION FROM BREAKPOINT OR SWI
0085 * L = LOAD TAPE
0086 * M hhhh = EXAMINE AND CHANGE MEMORY LOCATION hhhh
0087 * P ssss-eeee = PUNCH TAPE, START ssss TO END eeee ADDR.
0088 * R = DISPLAY REGISTER CONTENTS
0089 * S = DISPLAY STACK FROM ssss TO $DFC0
0090 * U = 8" DMAF2 FLOPPY BOOT
0091 * U = USER EXTENSION COMMANDS AT $F000
0092 * X = REMOVE ALL BREAKPOINTS
0093 *
0094 *
0095 ***************************************************
0096 * SYS09BUG VARIABLE SPACE
0097 ***************************************************
0098 *
0099 DFC0 ORG MONRAM
0100 DFC0 STACK EQU * ; TOP OF INTERNAL STACK
0101 DFC0 NMI RMB 2 ; USER NMI VECTOR
0102 DFC2 SWI3 RMB 2 ; SOFTWARE INTERRUPT VECTOR #3
0103 DFC4 SWI2 RMB 2 ; SOFTWARE INTERRUPT VECTOR #2
0104 DFC6 FIRQ RMB 2 ; FAST INTERRUPT VECTOR
0105 DFC8 IRQ RMB 2 ; INTERRUPT VECTOR
0106 DFCA SWI RMB 2 ; SOFTWARE INTERRUPT VECTOR
0107 DFCC SVCVO RMB 2 ; SUPERVISOR CALL VECTOR ORGIN
0108 DFCE SVCVL RMB 2 ; SUPERVISOR CALL VECTOR LIMIT
0109 IFD DATOPT
0110 DFD0 LRARAM RMB 16 ; LRA ADDRESSES
0111 ENDIF DATOPT
0112 DFE0 CPORT RMB 2 ; RE-VECTORABLE CONTROL PORT
0113 DFE2 ECHO RMB 1 ; ECHO FLAG
0114 DFE3 BPTBL RMB 24 ; BREAKPOINT TABLE BASE ADDR
0115 IFD TRAOPT
0116 NMISAV RMB 2 ; NMI Jump Vector Backup
0117 TRACNT RMB 2 ; Trace Count
0118 ENDIF TRAOPT
0118 ENDIF TRAOPT
0119 IFD VDUOPT
0120 *
0121 **************************************************
0122 * VDU8 DISPLAY DRIVER VARIABLES *
0123 **************************************************
0124 *
0125 **** ALWAYS KEEP COLADX AND ROWADX TOGETHER ******
0126 DFFB COLADX RMB 1 ; CURSOR COLUMN
0127 DFFC ROWADX RMB 1 ; CURSOR ROW
0128 **************************************************
0129 *
0130 DFFD NEWROW RMB 1 ; NEW ROW TEMP FOR ESCAPE
0131 DFFE ESCFLG RMB 1 ; ESCAPE SEQUENCE ACTIVE
0132 ENDIF VDUOPT
0133 IFD DG640OPT
0134 *
0135 ***************************************************
0136 * DG640 MEMORY MAPPED DISPLAY DRIVER VARIABLES *
0137 ***************************************************
0138 *
0139 ***** ALWAYS KEEP THESE TWO BYTES TOGETHER *****
0140 COLADX RMB 1 ; CURSOR COLUMN
0141 ROWADX RMB 1 ; CURSOR ROW
0142 *************************************************
0143 CURSOR RMB 2 ; ABSOLUTE SCREEN ADDRESS
0144 NEWROW RMB 1 ; NEW ROW TEMP FOR ESCAPE
0145 ESCFLG RMB 1 ; ESCAPE SEQUENCE ACTIVE
0146 ENDIF DG640OPT
0146 ENDIF DG640OPT
0147 *
0148 *
0149 ***************************************************
0150 * START OF ROM *
0151 ***************************************************
0152 *
0153 F800 ORG MONROM
0154 F800 F8 14 FDB MONITOR
0155 F802 F8 61 FDB NEXTCMD
0156 F804 FC A1 FDB INCH
0157 F806 FC 9B FDB INCHE
0158 F808 FC B9 FDB INCHEK
0159 F80A FC CE FDB OUTCH
0160 F80C FB 8F FDB PDATA
0161 F80E FB 1E FDB PCRLF
0162 F810 FB 1A FDB PSTRNG
0163 F812 FA 2E FDB LRA
0164 *
0165 IFD ADSOPT
0166 FDB PCHK ; CHECK FOR PRINTER INPUT
0167 FDB PINIZ ; INITIATE PRINTER
0168 FDB POUTCH ; OUTPUT CH. TO PRINTER
0169 FDB VINIZ
0170 FDB VOUTCH
0171 FDB ACINIZ
0172 FDB AOUTCH
0173 ENDIF ADSOPT
0173 ENDIF ADSOPT
0174 *
0175 * MONITOR
0176 *
0177 * VECTOR ADDRESS STRING IS.....
0178 * $F8A1-$F8A1-$F8A1-$F8A1-$F8A1-$FAB0-$FFFF-$FFFF
0179 *
0180 F814 8E FE 62 MONITOR LDX #RAMVEC ; POINT TO VECTOR ADDR. STRING
0181 F817 10 8E DF C0 LDY #STACK ; POINT TO RAM VECTOR LOCATION
0182 F81B C6 10 LDB #$10 ; BYTES TO MOVE = 16
0183 F81D A6 80 LOOPA LDA ,X+ ; GET VECTOR BYTE
0184 F81F A7 A0 STA ,Y+ ; PUT VECTORS IN RAM / $DFC0-$DFCF
0185 F821 5A DECB ; SUBTRACT 1 FROM NUMBER OF BYTES TO MOVE
0186 F822 26 F9 BNE LOOPA ; CONTINUE UNTIL ALL VECTORS MOVED
0187 *
0188 * CONTENTS FROM TO FUNCTION
0189 * $F8A1 $FE40 $DFC0 USER-V
0190 * $F8A1 $FE42 $DFC2 SWI3-V
0191 * $F8A1 $FE44 $DFC4 SWI2-V
0192 * $F8A1 $FE46 $DFC6 FIRQ-V
0193 * $F8A1 $FE48 $DFC8 IRQ-V
0194 * $FAB0 $FE4A $DFCA SWI-V
0195 * $FFFF $FE4C $DFCC SVC-VO
0196 * $FFFF $FE4E $DFCE SVC-VL
0197 *
0198 F824 8E E0 00 LDX #ACIAS
0199 F827 BF DF E0 STX CPORT ; STORE ADDR. IN RAM
0200 F82A 17 01 5B LBSR XBKPNT ; CLEAR OUTSTANDING BREAKPOINTS
0201 F82D C6 0C LDB #12 ; CLEAR 12 BYTES ON STACK
0202 F82F 6F E2 CLRSTK CLR ,-S
0203 F831 5A DECB
0204 F832 26 FB BNE CLRSTK
0205 F834 30 8C DD LEAX MONITOR,PCR ; SET PC TO SBUG-E ENTRY
0206 F837 AF 6A STX 10,S ; ON STACK
0207 F839 86 D0 LDA #$D0 ; PRESET CONDITION CODES ON STACK
0208 F83B A7 E4 STA ,S
0209 F83D 1F 43 TFR S,U
0210 F83F 17 04 A3 LBSR IOINIZ ; INITIALIZE CONTROL PORT
0211 F842 8E FE 72 LDX #MSG1 ; POINT TO MONITOR MESSAGE
0212 F845 17 03 47 LBSR PDATA ; PRINT MSG
0213 *
0214 IFD DATOPT
0215 F848 8E DF D0 LDX #LRARAM ; POINT TO LRA RAM STORAGE AREA
0216 F84B 4F CLRA START ; TOTAL AT ZERO
0217 F84C C6 0D LDB #13 ; TOTAL UP ALL ACTIVE RAM MEMORY
0218 F84E 6D 85 FNDREL TST B,X ; TEST FOR RAM AT NEXT LOC.
0219 F850 27 03 BEQ RELPAS ; IF NO RAM GO TO NEXT LOC.
0220 F852 8B 04 ADDA #4 ; ELSE ADD 4K TO TOTAL
0221 F854 19 DAA ; ADJ. TOTAL FOR DECIMAL
0222 F855 5A RELPAS DECB ; SUB. 1 FROM LOCS. TO TEST
0223 F856 2A F6 BPL FNDREL ; PRINT TOTAL OF RAM
0224 F858 17 04 0C LBSR OUT2H ; OUTPUT HEX BYTE AS ASCII
0225 F85B 8E FE 92 LDX #MSG2 ; POINT TO MSG 'K' CR/LF + 3 NULS
0226 F85E 17 03 2E LBSR PDATA ; PRINT MSG
0227 ENDIF DATOPT
0228 *
0229 IFD TRAOPT
0230 LBSR TRAINZ
0231 ENDIF TRAOPT
0231 ENDIF TRAOPT
0232 *
0233 ***** NEXTCMD *****
0234 *
0235 F861 8E FE 99 NEXTCMD LDX #MSG3 ; POINT TO MSG ">"
0236 F864 17 02 B3 LBSR PSTRNG ; PRINT MSG
0237 F867 17 04 37 LBSR INCH ; GET ONE CHAR. FROM TERMINAL
0238 F86A 84 7F ANDA #$7F ; STRIP PARITY FROM CHAR.
0239 F86C 81 0D CMPA #$0D ; IS IT CARRIAGE RETURN ?
0240 F86E 27 F1 BEQ NEXTCMD ; IF CR THEN GET ANOTHER CHAR.
0241 F870 1F 89 TFR A,B ; PUT CHAR. IN "B" ACCUM.
0242 F872 81 20 CMPA #$20 ; IS IT CONTROL OR DATA CHAR ?
0243 F874 2C 09 BGE PRTCMD ; IF CMD CHAR IS DATA, PRNT IT
0244 F876 86 5E LDA #'^ ; ELSE CNTRL CHAR CMD SO...
0245 F878 17 04 53 LBSR OUTCH ; PRINT "^"
0246 F87B 1F 98 TFR B,A ; RECALL CNTRL CMD CHAR
0247 F87D 8B 40 ADDA #$40 ; CONVERT IT TO ASCII LETTER
0248 F87F 17 04 4C PRTCMD LBSR OUTCH ; PRNT CMD CHAR
0249 F882 17 04 47 LBSR OUT1S ; PRNT SPACE
0250 F885 C1 60 CMPB #$60
0251 F887 2F 02 BLE NXTCH0
0252 F889 C0 20 SUBB #$20
0253 *
0254 ***** DO TABLE LOOKUP *****
0255 * FOR COMMAND FUNCTIONS
0256 *
0257 F88B 8E FE 29 NXTCH0 LDX #JMPTAB ; POINT TO JUMP TABLE
0258 F88E E1 80 NXTCHR CMPB ,X+ ; DOES COMMAND MATCH TABLE ENTRY ?
0259 F890 27 0F BEQ JMPCMD ; BRANCH IF MATCH FOUND
0260 F892 30 02 LEAX 2,X ; POINT TO NEXT ENTRY IN TABLE
0261 F894 8C FE 62 CMPX #TABEND ; REACHED END OF TABLE YET ?
0262 F897 26 F5 BNE NXTCHR ; IF NOT END, CHECK NEXT ENTRY
0263 F899 8E FE 9B LDX #MSG4 ; POINT TO MSG "WHAT?"
0264 F89C 17 02 F0 LBSR PDATA ; PRINT MSG
0265 F89F 20 C0 BRA NEXTCMD ; IF NO MATCH, PRMPT FOR NEW CMD
0266 F8A1 AD 94 JMPCMD JSR [,X] ; JUMP TO COMMAND ROUTINE
0267 F8A3 20 BC BRA NEXTCMD ; PROMPT FOR NEW COMMAND
0268 *
0269 * "G" GO OR CONTINUE
0270 *
0271 F8A5 1F 34 GO TFR U,S
0272 F8A7 3B RTI RTI
0273 *
0274 ***** "M" MEMORY EXAMINE AND CHANGE *****
0275 *
0276 F8A8 17 03 6B MEMCHG LBSR IN1ADR ; INPUT ADDRESS
0277 F8AB 29 2D BVS CHRTN ; IF NOT HEX, RETURN
0278 F8AD 1F 12 TFR X,Y ; SAVE ADDR IN "Y"
0279 F8AF 8E FE A1 MEMC2 LDX #MSG5 ; POINT TO MSG " - "
0280 F8B2 17 02 65 LBSR PSTRNG ; PRINT MSG
0281 F8B5 1F 21 TFR Y,X ; FETCH ADDRESS
0282 F8B7 17 03 A5 LBSR OUT4H ; PRINT ADDR IN HEX
0283 F8BA 17 04 0F LBSR OUT1S ; OUTPUT SPACE
0284 F8BD A6 A4 LDA ,Y ; GET CONTENTS OF CURRENT ADDR.
0285 F8BF 17 03 A5 LBSR OUT2H ; OUTPUT CONTENTS IN ASCII
0286 F8C2 17 04 07 LBSR OUT1S ; OUTPUT SPACE
0287 F8C5 17 03 5E LBSR BYTE ; LOOP WAITING FOR OPERATOR INPUT
0288 F8C8 28 11 BVC CHANGE ; IF VALID HEX GO CHANGE MEM. LOC.
0289 F8CA 81 08 CMPA #8 ; IS IT A BACKSPACE (CNTRL H)?
0290 F8CC 27 E1 BEQ MEMC2 ; PROMPT OPERATOR AGAIN
0291 F8CE 81 18 CMPA #$18 ; IS IT A CANCEL (CNTRL X)?
0292 F8D0 27 DD BEQ MEMC2 ; PROMPT OPERATOR AGAIN
0293 F8D2 81 5E CMPA #'^ ; IS IT AN UP ARROW?
0294 F8D4 27 17 BEQ BACK ; DISPLAY PREVIOUS BYTE
0295 F8D6 81 0D CMPA #$D ; IS IT A CR?
0296 F8D8 26 0F BNE FORWRD ; DISPLAY NEXT BYTE
0297 F8DA 39 CHRTN RTS ; EXIT ROUTINE
0298 *
0299 *
0300 F8DB A7 A4 CHANGE STA ,Y ; CHANGE BYTE IN MEMORY
0301 F8DD A1 A4 CMPA ,Y ; DID MEMORY BYTE CHANGE?
0302 F8DF 27 08 BEQ FORWRD ; $F972
0303 F8E1 17 03 E8 LBSR OUT1S ; OUTPUT SPACE
0304 F8E4 86 3F LDA #'? ; LOAD QUESTION MARK
0305 F8E6 17 03 E5 LBSR OUTCH ; PRINT IT
0306 F8E9 31 21 FORWRD LEAY 1,Y ; POINT TO NEXT HIGHER MEM LOCATION
0307 F8EB 20 C2 BRA MEMC2 ; PRINT LOCATION & CONTENTS
0308 F8ED 31 3F BACK LEAY -1,Y ; POINT TO LAST MEM LOCATION
0309 F8EF 20 BE BRA MEMC2 ; PRINT LOCATION & CONTENTS
0310 *
0311 * "S" DISPLAY STACK
0312 * HEX-ASCII DISPLAY OF CURRENT STACK CONTENTS FROM
0313 ** CURRENT STACK POINTER TO INTERNAL STACK LIMIT.
0314 *
0315 F8F1 17 02 A2 DISSTK LBSR PRTSP ; PRINT CURRENT STACK POINTER
0316 F8F4 1F 32 TFR U,Y
0317 F8F6 8E DF C0 LDX #STACK ; LOAD INTERNAL STACK AS UPPER LIMIT
0318 F8F9 30 1F LEAX -1,X ; POINT TO CURRENT STACK
0319 F8FB 20 05 BRA MDUMP1 ; ENTER MEMORY DUMP OF STACK CONTENTS
0320 *
0321 * "E" DUMP MEMORY FOR EXAMINE IN HEX AND ASCII
0322 * AFTER CALLING 'IN2ADR' LOWER ADDRESS IN Y-REG.
0323 * UPPER ADDRESS IN X-REG.
0324 * IF HEX ADDRESSES ARE INVALID (V)=1.
0325 *
0326 F8FD 17 03 0B MEMDUMP LBSR IN2ADR ; INPUT ADDRESS BOUNDRIES
0327 F900 29 06 BVS EDPRTN ; NEW COMMAND IF ILLEGAL HEX
0328 F902 34 20 MDUMP1 PSHS Y ; COMPARE LOWER TO UPPER BOUNDS
0329 F904 AC E1 CMPX ,S++ ; LOWER BOUNDS > UPPER BOUNDS?
0330 F906 24 01 BCC AJDUMP ; IF NOT, DUMP HEX AND ASCII
0331 F908 39 EDPRTN RTS ;
0332 *
0333 * ADJUST LOWER AND UPPER ADDRESS LIMITS
0334 * TO EVEN 16 BYTE BOUNDRIES.
0335 *
0336 * IF LOWER ADDR = $4532
0337 * LOWER BOUNDS WILL BE ADJUSTED TO = $4530.
0338 *
0339 * IF UPPER ADDR = $4567
0340 * UPPER BOUNDS WILL BE ADJUSTED TO = $4570.
0341 *
0342 * ENTER WITH LOWER ADDRESS IN X-REG.
0343 * -UPPER ADDRESS ON TOP OF STACK.
0344 *
0345 F909 1F 10 AJDUMP TFR X,D ; GET UPPER ADDR IN D-REG
0346 F90B C3 00 10 ADDD #$10 ; ADD 16 TO UPPER ADDRESS
0347 F90E C4 F0 ANDB #$F0 ; MASK TO EVEN 16 BYTE BOUNDRY
0348 F910 34 06 PSHS A,B ; SAVE ON STACK AS UPPER DUMP LIMIT
0349 F912 1F 20 TFR Y,D ; $F9A5 GET LOWER ADDRESS IN D-REG
0350 F914 C4 F0 ANDB #$F0 ; MASK TO EVEN 16 BYTE BOUNDRY
0351 F916 1F 01 TFR D,X ; PUT IN X-REG AS LOWER DUMP LIMIT
0352 F918 AC E4 NXTLIN CMPX ,S ; COMPARE LOWER TO UPPER LIMIT
0353 F91A 27 05 BEQ SKPDMP ; IF EQUAL SKIP HEX-ASCII DUMP
0354 F91C 17 03 9A LBSR INCHEK ; CHECK FOR INPUT FROM KEYBOARD
0355 F91F 27 03 BEQ EDUMP
0356 F921 32 62 SKPDMP LEAS 2,S ; READJUST STACK IF NOT DUMPING
0357 F923 39 RTS ;
0358 *
0359 * PRINT 16 HEX BYTES FOLLOWED BY 16 ASCII CHARACTERS
0360 * FOR EACH LINE THROUGHOUT ADDRESS LIMITS.
0361 *
0362 F924 34 10 EDUMP PSHS X ; PUSH LOWER ADDR LIMIT ON STACK
0363 F926 8E FE A1 LDX #MSG5 ; POINT TO MSG " - "
0364 F929 17 01 EE LBSR PSTRNG ; PRINT MSG
0365 F92C AE E4 LDX ,S ; LOAD LOWER ADDR FROM TOP OF STACK
0366 F92E 17 03 2E LBSR OUT4H ; PRINT THE ADDRESS
0367 F931 17 03 96 LBSR OUT2S ; 2 SPACES
0368 F934 C6 10 LDB #$10 ; LOAD COUNT OF 16 BYTES TO DUMP
0369 F936 A6 80 ELOOP LDA ,X+ ; GET FROM MEMORY HEX BYTE TO PRINT
0370 F938 17 03 2C LBSR OUT2H ; OUTPUT HEX BYTE AS ASCII
0371 F93B 17 03 8E LBSR OUT1S ; OUTPUT SPACE
0372 F93E 5A DECB ; $F9D1 DECREMENT BYTE COUNT
0373 F93F 26 F5 BNE ELOOP ; CONTINUE TIL 16 HEX BYTES PRINTED
0374 *
0375 * PRINT 16 ASCII CHARACTERS
0376 * IF NOT PRINTABLE OR NOT VALID
0377 * ASCII PRINT A PERIOD (.)
0378 F941 17 03 86 LBSR OUT2S ; 2 SPACES
0379 F944 AE E1 LDX ,S++ ; GET LOW LIMIT FRM STACK - ADJ STACK
0380 F946 C6 10 LDB #$10 ; SET ASCII CHAR TO PRINT = 16
0381 F948 A6 80 EDPASC LDA ,X+ ; GET CHARACTER FROM MEMORY
0382 F94A 81 20 CMPA #$20 ; IF LESS THAN $20, NON-PRINTABLE?
0383 F94C 25 04 BCS PERIOD ; IF SO, PRINT PERIOD INSTEAD
0384 F94E 81 7E CMPA #$7E ; IS IT VALID ASCII?
0385 F950 23 02 BLS PRASC ; IF SO PRINT IT
0386 F952 86 2E PERIOD LDA #'. ; LOAD A PERIOD (.)
0387 F954 17 03 77 PRASC LBSR OUTCH ; PRINT ASCII CHARACTER
0388 F957 5A DECB ; DECREMENT COUNT
0389 F958 26 EE BNE EDPASC
0390 F95A 20 BC BRA NXTLIN
0391 *
0392 ***** "B" SET BREAKPOINT *****
0393 *
0394 F95C 17 02 B7 BRKPNT LBSR IN1ADR ; GET BREAKPOINT ADDRESS
0395 F95F 29 1E BVS EXITBP ; EXIT IF INVALID HEX ADDR.
0396 F961 8C DF C0 CMPX #STACK ; ADDRESS ILLEGAL IF >=$DFC0
0397 F964 24 1A BCC BPERR ; IF ERROR PRINT (?), EXIT
0398 F966 34 10 PSHS X ; $FA82 PUSH BP ADDRESS ON STACK
0399 F968 8E FF FF LDX #$FFFF ; LOAD DUMMY ADDR TO TEST BP TABLE
0400 F96B 8D 55 BSR BPTEST ; TEST BP TABLE FOR FREE SPACE
0401 F96D 35 10 PULS X ; POP BP ADDRESS FROM STACK
0402 F96F 27 0F BEQ BPERR ; (Z) SET, OUT OF BP TABLE SPACE
0403 F971 A6 84 LDA ,X ; GET DATA AT BREAKPOINT ADDRESS
0404 F973 81 3F CMPA #$3F ; IS IT A SWI?
0405 F975 27 09 BEQ BPERR ; IF SWI ALREADY, INDICATE ERROR
0406 F977 A7 A0 STA ,Y+ ; SAVE DATA BYTE IN BP TABLE
0407 F979 AF A4 STX ,Y ; SAVE BP ADDRESS IN BP TABLE
0408 F97B 86 3F LDA #$3F ; LOAD A SWI ($3F)
0409 F97D A7 84 STA ,X ; SAVE SWI AT BREAKPOINT ADDRESS
0410 F97F 39 EXITBP RTS ;
0411 *
0412 * INDICATE ERROR SETTING BREAKPOINT
0413 *
0414 F980 17 03 49 BPERR LBSR OUT1S ; OUTPUT SPACE
0415 F983 86 3F LDA #'? ; LOAD (?), INDICATE BREAKPOINT ERROR
0416 F985 16 03 46 LBRA OUTCH ; PRINT "?"
0417 *
0418 *** "X" CLEAR OUTSTANDING BREAKPOINTS ***
0419 *
0420 F988 10 8E DF E3 XBKPNT LDY #BPTBL ; POINT TO BREAKPOINT TABLE
0421 F98C C6 08 LDB #8 ; LOAD BREAKPOINT COUNTER
0422 F98E 8D 18 XBPLP BSR RPLSWI ; REMOVE USED ENTRY IN BP TABLE
0423 F990 5A DECB $FAAC ; DECREMENT BP COUNTER
0424 F991 26 FB BNE XBPLP ; END OF BREAKPOINT TABLE?
0425 F993 39 RTS
0426 *
0427 ***** SWI ENTRY POINT *****
0428 *
0429 F994 1F 43 SWIE TFR S,U ; TRANSFER STACK TO USER POINTER
0430 F996 AE 4A LDX 10,U ; LOAD PC FROM STACK INTO X-REG
0431 F998 30 1F LEAX -1,X ; ADJUST ADDR DOWN 1 BYTE.
0432 F99A 8D 26 BSR BPTEST ; FIND BREAKPOINT IN BP TABLE
0433 F99C 27 04 BEQ REGPR ; IF FOUND, REPLACE DATA AT BP ADDR
0434 F99E AF 4A STX 10,U ; SAVE BREAKPOINT ADDR IN STACK
0435 F9A0 8D 06 BSR RPLSWI ; GO REPLACE SWI WITH ORIGINAL DATA
0436 F9A2 17 02 48 REGPR LBSR REGSTR ; GO PRINT REGISTERS
0437 *
0438 IFD TRAOPT
0439 LDX #0
0440 STX TRACNT
0441 ENDIF TRAOPT
0441 ENDIF TRAOPT
0442 *
0443 F9A5 16 FE B9 LBRA NEXTCMD ; GET NEXT COMMAND
0444 *
0445 F9A8 AE 21 RPLSWI LDX 1,Y ; LOAD BP ADDRESS FROM BP TABLE
0446 F9AA 8C DF C0 CMPX #STACK ; COMPARE TO TOP AVAILABLE USER MEMORY
0447 F9AD 24 0A BCC FFSTBL ; GO RESET TABLE ENTRY TO $FF'S
0448 F9AF A6 84 LDA ,X ; GET DATA FROM BP ADDRESS
0449 F9B1 81 3F CMPA #$3F ; IS IT SWI?
0450 F9B3 26 04 BNE FFSTBL ; IF NOT, RESET TABLE ENTRY TO $FF'S
0451 F9B5 A6 A4 LDA ,Y ; GET ORIGINAL DATA FROM BP TABLE
0452 F9B7 A7 84 STA ,X ; $FAD3 RESTORE DATA AT BP ADDRESS
0453 F9B9 86 FF FFSTBL LDA #$FF ; LOAD $FF IN A-ACC
0454 F9BB A7 A0 STA ,Y+ ; RESET BREAKPOINT TABLE DATA TO $FF'S
0455 F9BD A7 A0 STA ,Y+ ; RESET BREAKPOINT TABLE ADDR TO $FF'S
0456 F9BF A7 A0 STA ,Y+
0457 F9C1 39 RTS
0458 *
0459 ** SEARCH BREAKPOINT TABLE FOR MATCH **
0460 *
0461 F9C2 10 8E DF E3 BPTEST LDY #BPTBL ; POINT TO BREAKPOINT TABLE
0462 F9C6 C6 08 LDB #8 ; LOAD BREAKPOINT COUNTER
0463 F9C8 A6 A0 FNDBP LDA ,Y+ ; LOAD DATA BYTE
0464 F9CA AC A1 CMPX ,Y++ ; COMPARE ADDRESS, IS IT SAME?
0465 F9CC 27 04 BEQ BPADJ ; IF SO, ADJUST POINTER FOR TABLE ENTRY
0466 F9CE 5A DECB ; IF NOT, DECREMENT BREAKPOINT COUNTER
0467 F9CF 26 F7 BNE FNDBP ; AND LOOK FOR NEXT POSSIBLE MATCH
0468 F9D1 39 RTS ;
0469 *
0470 *
0471 F9D2 31 3D BPADJ LEAY -3,Y ; MOVE POINTER TO BEGIN OF BP ENTRY
0472 F9D4 39 RTS
0473 *
0474 IFD TRAOPT
0475 *
0476 ** TRACE from address AAAA BB bytes
0477 *
0478 TRACE LBSR ALTPC1 ; SET UP NEW PC
0479 BVS TREXIT ; ADDRESS ERROR, EXIT
0480 LBSR OUT1S
0481 LBSR IN1ADR ; Fetch Byte Count
0482 BVS TREXIT ; Byte Count error, EXIT
0483 STX TRACNT
0484 *
0485 LDX NMI ; Save NMI Vector
0486 STX NMISAV
0487 LDX #NMIE ; Set up NMI for Tracing
0488 STX NMI
0489 LBSR TRAINZ ; Initialise Hardware
0490 BRA TRACEG ; Start Trace
0491 TREXIT RTS
0492 *
0493 * CRA0 = 0 CA1 IRQ DISAB, CRA0 = 1 CA1 IRQ ENAB
0494 * CRA1 = 1 CA1 Rising edge IRQ
0495 * CRA2 = 0 TADATA = Data Direction, CRA2 = 1 TADATA = I/O Register
0496 * CRA3 = 0 CA2 = 0 output, CRA3 = 1 CA2 = 1
0497 * CRA4 = 1 ] CA2 = Set/Reset output
0498 * CRA5 = 1 ]
0499 * CRA6 = X CA2 Input Interrupt Flag
0500 * CRA7 = X CA1 Interrupt Flag
0501 *
0502 * CRB0 = 0 CB1 IRQ DISAB, CRB0 = 1 CA1 IRQ ENAB
0503 * CRB1 = 1 CB1 Rising edge IRQ
0504 * CRB2 = 0 TBDATA = Data Direction, CRB2 = 1 TBDATA = I/O Register
0505 * CRB3 = 0 CB2 = 0 output, CRB3 = 1 CB2 = 1
0506 * CRB4 = 1 ] CB2 = Set/Reset output
0507 * CRB5 = 1 ]
0508 * CRB6 = X CB2 Input Interrupt Flag
0509 * CRB7 = X CB1 Interrupt Flag
0510 *
0511 *
0512 ** TRACE NMI ENTRY POINT
0513 *
0514 NMIE TFR S,U
0515 LDA #$36 ; Disable Interrupt, CA2 Low
0516 STA TACTRL
0517 LDA TADATA ; Clear Interrupt flag by reading data port
0518 *
0519 LBSR REGSTR ; DUMP REGISTERS
0520 *
0521 LDX 10,U ; TEST IF NEXT INSTRUCTION IS A SWI
0522 LDA ,X
0523 CMPA #$3F
0524 BEQ TRACEX ; EXIT ON SWI
0525 *
0526 LDX TRACNT ; CHECK IF TRACE COUNT EXPIRED
0527 BEQ TRACEX ; YES, GO BACK TO THE MONITOR
0528 LEAX -1,X ; ECREMENT TRACE COUNT
0529 STX TRACNT
0530 *
0531 ** TRACE GO (RESUME SINGLE STEP)
0532 *
0533 TRACEG TFR U,S ; SET UP PROGRAM STACK POINTER
0534 LDA #TRADEL ; SET UP TIMER DELAY (NUMB CYCLES FOR RTI+1)
0535 STA TADATA
0536 LDA #$36 ; LOAD STROBE LOW
0537 STA TACTRL
0538 LDA TADATA ; CLEAR INTERRUPT
0539 LDA #$36 ; RELEASE RESET
0540 STA TBCTRL
0541 LDA #$3F ; RELEASE LOAD, ENABLE CA1 NMI, CA1 RISING EDGE
0542 STA TACTRL
0543 RTI ; GO EXECUTE INSTRUCTION
0544 *
0545 TRACEX LDX NMISAV ; Restore NMI vector
0546 STX NMI
0547 LBRA NEXTCMD ; Jump back to the command loop.
0548 *
0549 ** TRACE HARDWARE INITIALISATION
0550 *
0551 TRAINZ LDA #$32 ; SELECT DDRA, CA2 LOW, NMI DISABLED
0552 STA TACTRL
0553 LDA #$3A ; SELECT DDRB, CB2 HIGH, FIRQ DISABLED
0554 STA TBCTRL
0555 LDA #$FF ; PORTA = OUTPUT
0556 STA TADATA
0557 LDA #$00 ; PORTB = INPUT
0558 STA TBDATA
0559 LDA #$36 ; SELECT OUTPUT REGISTER A, CA2 LOW
0560 STA TACTRL
0561 LDA #$3E ; SELECT OUTPUT REGISTER B, CB2 HIGH
0562 STA TBCTRL
0563 RTS
0564 *
0565 ENDIF TRAOPT
0565 ENDIF TRAOPT
0566 IFD MFDCOPT
0567 *
0568 ** "U" MINI DISK BOOT
0569 *
0570 MINBOOT TST CMDFDC
0571 CLR DRVFDC
0572 LDX #$0000
0573 LOOP LEAX $01,X
0574 CMPX #$0000
0575 BNE LOOP
0576 LDA #$0F
0577 STA CMDFDC
0578 BSR DELAY
0579 LOOP1 LDB CMDFDC
0580 BITB #$01
0581 BNE LOOP1
0582 LDA #$01
0583 STA SECFDC
0584 BSR DELAY
0585 LDA #$8C
0586 STA CMDFDC
0587 BSR DELAY
0588 LDX #$C000
0589 BRA LOOP3
0590 LOOP2 BITB #$02
0591 BEQ LOOP3
0592 LDA DATFDC
0593 STA ,X+
0594 LOOP3 LDB CMDFDC
0595 BITB #$01
0596 BNE LOOP2
0597 BITB #$2C
0598 BEQ LOOP4
0599 RTS
0600 *
0601 LOOP4 LDX #$C000
0602 STX $0A,U
0603 TFR U,S
0604 RTI
0605 *
0606 DELAY LDB #$04
0607 LOOP5 DECB
0608 BNE LOOP5
0609 RTS
0610 ENDIF MFDCOPT
0610 ENDIF MFDCOPT
0611 *
0612 IFD DMAFOPT
0613 *
0614 *** "D" DISK BOOT FOR DMAF2 ***
0615 *
0616 DBOOT LDA #$DE
0617 STA DRVREG
0618 LDA #$FF
0619 STA PRIREG ; $FAF8
0620 STA CCREG
0621 STA AAAREG
0622 STA BBBREG
0623 TST CCREG
0624 LDA #$D8
0625 STA COMREG
0626 LBSR DLY
0627 DBOOT0 LDA COMREG
0628 BMI DBOOT0
0629 LDA #$09
0630 STA COMREG
0631 LBSR DLY
0632 *
0633 DISKWT LDA COMREG ; FETCH DRIVE STATUS
0634 BITA #1 ; TEST BUSY BIT
0635 BNE DISKWT ; LOOP UNTIL NOT BUSY
0636 *
0637 BITA #$10
0638 BNE DBOOT
0639 *
0640 LDX #$C000 ; LOGICAL ADDR. = $C000
0641 BSR LRA ; GET 20 BIT PHYSICAL ADDR. OF LOG. ADDR.
0642 ORA #$10
0643 STA CCCREG
0644 TFR X,D
0645 COMA ;
0646 COMB ;
0647 STD ADDREG
0648 LDX #$FEFF ; LOAD DMA BYTE COUNT = $100
0649 STX CNTREG ; STORE IN COUNT REGISTER
0650 LDA #$FF ; LOAD THE CHANNEL REGISTER
0651 STA CCREG
0652 LDA #$FE ; SET CHANNEL 0
0653 STA PRIREG
0654 LDA #1 ; SET SECTOR TO "1"
0655 STA SECREG ; ISSUE COMMAND
0656 LDA #$8C ; SET SINGLE SECTOR READ
0657 STA COMREG ; ISSUE COMMAND
0658 BSR DLY
0659 *
0660 * THE FOLLOWING CODE TESTS THE STATUS OF THE
0661 * CHANNEL CONTROL REGISTER. IF "D7" IS NOT
0662 * ZERO THEN IT WILL LOOP WAITING FOR "D7"
0663 * TO GO TO ZERO. IF AFTER 65,536 TRIES IT
0664 * IS STILL A ONE THE BOOT OPERATION WILL
0665 * BE STARTED OVER FROM THE BEGINING.
0666 *
0667 CLRB ;
0668 DBOOT1 PSHS B ; $FB55
0669 CLRB ;
0670 DBOOT2 TST CCREG
0671 BPL DBOOT3
0672 DECB ;
0673 BNE DBOOT2
0674 PULS B
0675 DECB
0676 BNE DBOOT1
0677 BRA DBOOT
0678 DBOOT3 PULS B
0679 LDA COMREG
0680 BITA #$1C
0681 BEQ DBOOT4
0682 RTS ;
0683 *
0684 *
0685 DBOOT4 LDB #$DE
0686 STB DRVREG
0687 LDX #$C000
0688 STX 10,U
0689 TFR U,S ; $FB7B
0690 RTI ;
0691 ENDIF DMAFOPT
0691 ENDIF DMAFOPT
0692 *
0693 IFD CF8OPT
0694 *
0695 * COMPACT FLASH BOOT
0696 *
0697 F9D5 8D 40 CFBOOT BSR WAITRDY
0698 F9D7 86 E0 LDA #HEADLBA
0699 F9D9 B7 E0 46 STA CF_HEAD
0700 F9DC 8D 39 BSR WAITRDY
0701 F9DE 86 01 LDA #FEAT8BIT
0702 F9E0 B7 E0 41 STA CF_FEATURE
0703 F9E3 86 EF LDA #CMDFEATURE
0704 F9E5 B7 E0 47 STA CF_COMAND
0705 F9E8 8D 2D BSR WAITRDY
0706 *
0707 * READ SECTORS FROM CF
0708 *
0709 F9EA 86 01 CFREAD LDA #$01
0710 F9EC B7 E0 42 STA CF_SECCNT
0711 F9EF 4F CLRA
0712 F9F0 B7 E0 43 STA CF_SECNUM
0713 F9F3 B7 E0 44 STA CF_CYLLO
0714 F9F6 B7 E0 45 STA CF_CYLHI
0715 *
0716 F9F9 86 20 LDA #CMDREAD ; IDE READ MULTIPLE
0717 F9FB B7 E0 47 STA CF_COMAND
0718 F9FE 8D 17 BSR WAITRDY
0719 FA00 8E C0 00 LDX #$C000
0720 *
0721 * READ LOOP
0722 *
0723 FA03 8D 21 RDLOOP BSR WAITDRQ
0724 FA05 B6 E0 40 LDA CF_DATA
0725 FA08 A7 80 STA ,X+
0726 FA0A 8C C2 00 CMPX #$C200
0727 FA0D 26 F4 BNE RDLOOP
0728 *
0729 FA0F 8E C0 00 LDX #$C000
0730 FA12 AF 4A STX $0A,U
0731 FA14 1F 34 TFR U,S
0732 FA16 3B RTI
0733 *
0734 * WAIT UNTIL READY
0735 *
0736 FA17 B6 E0 47 WAITRDY LDA CF_STATUS
0737 FA1A 85 80 BITA #BUSY
0738 FA1C 26 F9 BNE WAITRDY
0739 FA1E B6 E0 47 LDA CF_STATUS
0740 FA21 85 40 BITA #DRDY
0741 FA23 27 F2 BEQ WAITRDY
0742 FA25 39 RTS
0743 *
0744 * WAIT FOR DATA REQUEST
0745 *
0746 FA26 B6 E0 47 WAITDRQ LDA CF_STATUS
0747 FA29 85 08 BITA #DRQ
0748 FA2B 27 F9 BEQ WAITDRQ
0749 FA2D 39 RTS
0750 ENDIF CF8OPT
0751 *
0752 IFD IDEOPT
0753 *
0754 * XESS 16 BIT IDE BOOT
0755 *
0756 IDEBOOT LDD #AUXRESET
0757 STD CF_AUX
0758 LDD #AUXRSTREL
0759 STD CF_AUX
0760 LDD #HEADLBA
0761 STD CF_HEAD
0762 BSR WAITRDY
0763 *
0764 * READ SECTORS FROM CF
0765 *
0766 LDD #$01
0767 STD CF_SECCNT
0768 CLRB
0769 STD CF_SECNUM
0770 STD CF_CYLLO
0771 STD CF_CYLHI
0772 *
0773 LDB #CMDREAD ; IDE READ MULTIPLE
0774 STD CF_COMAND
0775 BSR WAITRDY
0776 LDX #$C000
0777 *
0778 * READ LOOP
0779 *
0780 RDLOOP BSR WAITDRQ
0781 LDD CF_DATA
0782 STB ,X+
0783 CMPX #$C100
0784 BNE RDLOOP
0785 *
0786 LDX #$C000
0787 STX $0A,U
0788 TFR U,S
0789 RTI
0790 *
0791 * WAIT UNTIL READY
0792 *
0793 WAITRDY LDD CF_STATUS
0794 BITB #BUSY
0795 BNE WAITRDY
0796 LDD CF_STATUS
0797 BITB #DRDY
0798 BEQ WAITRDY
0799 RTS
0800 *
0801 * WAIT FOR DATA REQUEST
0802 *
0803 WAITDRQ LDD CF_STATUS
0804 BITB #DRQ
0805 BEQ WAITDRQ
0806 RTS
0807 ENDIF IDEOPT
0807 ENDIF IDEOPT
0808 *
0809 IFD RTCOPT
0810 *
0811 * CLOCK INTER FACE UTILITY
0812 *
0813 * TIME <Hours> <Minuits> <Seconds>
0814 * If no argument is specified, the current time
0815 * will be displayed.
0816 *
0817 * READ A REGISTER FROM THE COUNTER.
0818 * The X Index rgister points to the register
0819 * to be read. The Status Register is checked
0820 * before and after the register is read before
0821 * returning a value in accumulator A
0822 *
0823 RDCLK TST CLKSTA
0824 BNE RDCLK
0825 RDCLK1 LDA 0,X
0826 TST CLKSTA
0827 BNE RDCLK1
0828 RTS
0829 *
0830 * MAIN PROGRAM:
0831 *
0832 TIMSET LDX #COUNTR ; POINT TO TIMER
0833 LBSR BYTE ; READ HOURS
0834 BVS SHOWTM ; NO ARG, DISP TIME
0835 STA HOUR,X
0836 LBSR OUT1S
0837 LBSR BYTE ; READ MINUITES
0838 BVS SHOWTM
0839 STA MINUIT,X
0840 LBSR OUT1S
0841 LBSR BYTE ; SECONDS.
0842 BVS SHOWTM
0843 STA SECOND,X
0844 *
0845 * DISPLAY CURRENT TIME
0846 *
0847 SHOWTM LBSR PCRLF
0848 LDX #COUNTR+HOUR
0849 LDB #3
0850 SHOWLP BSR RDCLK
0851 LBSR OUT2H
0852 LDA #':
0853 LBSR OUTCH
0854 LEAX -1,X
0855 DECB
0856 BNE SHOWLP
0857 RTS
0858 *
0859 * INITIATE CLOCK.
0860 * MASK INTERRUPTS.
0861 *
0862 CLKINZ CLR CINTCR ; MASK ALL INTERRUPTS
0863 TST CINTSR ; CLEAR ANY INTERRUPTS
0864 RTS
0865 ENDIF RTCOPT
0865 ENDIF RTCOPT
0866 IFD DATOPT
0867 *
0868 ***** LRA LOAD REAL ADDRESS *****
0869 *
0870 * THE FOLLOWING CODE LOADS THE 20-BIT
0871 * PHYSICAL ADDRESS OF A MEMORY BYTE
0872 * INTO THE "A" AND "X" REGISTERS. THIS
0873 * ROUTINE IS ENTERED WITH THE LOGICAL
0874 * ADDRESS OF A MEMORY BYTE IN THE "IX"
0875 * REGISTER. EXIT IS MADE WITH THE HIGH-
0876 * ORDER FOUR BITS OF THE 20-BIT PHYSICAL
0877 * ADDRESS IN THE "A" REGISTER, AND THE
0878 * LOW-ORDER 16-BITS OF THE 20-BIT
0879 * PHYSICAL ADDRESS IN THE "IX" REGISTER.
0880 * ALL OTHER REGISTERS ARE PRESERVED.
0881 * THIS ROUTINE IS REQUIRED SINCE THE
0882 * DMAF1 AND DMAF2 DISK CONTROLLERS MUST
0883 * PRESENT PHYSICAL ADDRESSES ON THE
0884 * SYSTEM BUS.
0885 *
0886 FA2E 34 36 LRA PSHS A,B,X,Y ; PUSH REGISTERS ON STACK
0887 FA30 A6 62 LDA 2,S ; GET MSB LOGICAL ADDR FRM X REG ON STACK
0888 FA32 44 LSRA ;
0889 FA33 44 LSRA ; ADJ FOR INDEXED INTO
0890 FA34 44 LSRA ; CORRESPONDING LOCATION
0891 FA35 44 LSRA ; IN LRA TABLE
0892 FA36 10 8E DF D0 LDY #LRARAM ; LOAD LRA TABLE BASE ADDRESS
0893 FA3A E6 A6 LDB A,Y ; GET PHYSICAL ADDR. DATA FROM LRA TABLE
0894 FA3C 54 LSRB ; ADJ. REAL ADDR. TO REFLECT EXTENDED
0895 FA3D 54 LSRB ; PHYSICAL ADDRESS.
0896 FA3E 54 LSRB ; EXTENDED MS 4-BITS ARE RETURNED
0897 FA3F 54 LSRB ; IN THE "A" ACCUMULATOR
0898 FA40 E7 E4 STB ,S ; MS 4 BITS IN A ACCUM. STORED ON STACK
0899 FA42 E6 A6 LDB A,Y ; LOAD REAL ADDRESS DATA FROM LRA TABLE
0900 FA44 53 COMB ; COMP TO ADJ FOR PHYSICAL ADDR. IN X REG
0901 FA45 58 ASLB ; ADJ DATA FOR RELOCATION IN X REG
0902 FA46 58 ASLB ;
0903 FA47 58 ASLB ; $FB97
0904 FA48 58 ASLB ;
0905 FA49 A6 62 LDA 2,S ; GET MS BYTE OF LOGICAL ADDR.
0906 FA4B 84 0F ANDA #$0F ; MASK MS NIBBLE OF LOGICAL ADDRESS
0907 FA4D A7 62 STA 2,S ; SAVE IT IN X REG ON STACK
0908 FA4F EA 62 ORB 2,S ; SET MS BYTE IN X REG TO ADJ PHY ADDR.
0909 *
0910 * PLUS LS NIBBLE OF LOGICAL ADDRESS
0911 *
0912 FA51 E7 62 STB 2,S ; SAVE AS LS 16 BITS OF PHY ADDR IN X REG ON STACK
0913 FA53 35 B6 PULS A,B,X,Y,PC ; POP REGS. FROM STACK
0914 ENDIF DATOPT
0915 *
0916 * DELAY LOOP
0917 *
0918 FA55 34 04 DLY PSHS B ; SAVE CONTENTS OF "B"
0919 FA57 C6 20 LDB #$20 ; GET LOOP DELAY VALUE
0920 FA59 5A SUB1 DECB ; SUBTRACT ONE FROM VALUE
0921 FA5A 26 FD BNE SUB1 ; LOOP UNTIL ZERO
0922 FA5C 35 84 PULS B,PC ; RESTORE CONTENTS OF "B"
0923 * RTS ;
0924 *
0925 ***** "L" LOAD MIKBUG TAPE *****
0926 *
0927 FA5E BD FC E7 LOAD JSR ACINIZ
0928 FA61 86 11 LDA #$11 ; LOAD 'DC1' CASS. READ ON CODE
0929 FA63 17 02 68 LBSR OUTCH ; OUTPUT IT TO TERMINAL PORT
0930 FA66 7F DF E2 CLR ECHO ; TURN OFF ECHO FLAG
0931 FA69 17 02 2A LOAD1 LBSR ECHON ; INPUT 8 BIT BYTE WITH NO ECHO
0932 FA6C 81 53 LOAD2 CMPA #'S ; IS IT AN "S", START CHARACTER ?
0933 FA6E 26 F9 BNE LOAD1 ; IF NOT, DISCARD AND GET NEXT CHAR.
0934 FA70 17 02 23 LBSR ECHON
0935 FA73 81 39 CMPA #'9 ; IS IT A "9" , END OF FILE CHAR ?
0936 FA75 27 3D BEQ LOAD21 ; IF SO, EXIT LOAD
0937 FA77 81 31 CMPA #'1 ; IS IT A "1" , FILE LOAD CHAR ?
0938 FA79 26 F1 BNE LOAD2 ; IF NOT, LOOK FOR START CHAR.
0939 FA7B 17 01 A8 LBSR BYTE ; INPUT BYTE COUNT
0940 FA7E 34 02 PSHS A ; PUSH COUNT ON STACK
0941 FA80 29 26 BVS LODERR ; (V) C-CODE SET, ILLEGAL HEX
0942 FA82 17 01 91 LBSR IN1ADR ; INPUT LOAD ADDRESS
0943 FA85 29 21 BVS LODERR ; (V) C-CODE SET, ADDR NOT HEX
0944 FA87 34 10 PSHS X ; PUSH ADDR ON STACK
0945 FA89 E6 E0 LDB ,S+ ; LOAD MSB OF ADDR AS CHECKSUM BYTE
0946 FA8B EB E0 ADDB ,S+ ; ADD LSB OF ADDR TO CHECKSUM
0947 FA8D EB E4 ADDB ,S ; ADD BYTE COUNT BYTE TO CHECKSUM
0948 FA8F 6A E4 DEC ,S ; $FC37 DECREMENT BYTE COUNT 2 TO BYPASS
0949 FA91 6A E4 DEC ,S ; ADDRESS BYTES.
0950 FA93 34 04 LOAD10 PSHS B ; PUSH CHECKSUM ON STACK
0951 FA95 17 01 8E LBSR BYTE ; INPUT DATA BYTE (2 HEX CHAR)
0952 FA98 35 04 PULS B ; POP CHECKSUM FROM STACK
0953 FA9A 29 0C BVS LODERR ; (V) SET, DATA BYTE NOT HEX
0954 FA9C 34 02 PSHS A ; PUSH DATA BYTE ON STACK
0955 FA9E EB E0 ADDB ,S+ ; ADD DATA TO CHECKSUM, AUTO INC STACK
0956 FAA0 6A E4 DEC ,S ; DECREMENT BYTE COUNT 1
0957 FAA2 27 05 BEQ LOAD16 ; IF BYTE COUNT ZERO, TEST CHECKSUM
0958 FAA4 A7 80 STA ,X+ ; SAVE DATA BYTE IN MEMORY
0959 FAA6 20 EB BRA LOAD10 ; GET NEXT DATA BYTE
0960 FAA8 5F LODERR CLRB ; ERROR CONDITION, ZERO CHECKSUM ;
0961 FAA9 35 02 LOAD16 PULS A ; ADJUST STACK (REMOVE BYTE COUNT)
0962 FAAB C1 FF CMPB #$FF ; CHECKSUM OK?
0963 FAAD 27 BA BEQ LOAD1 ; IF SO, LOAD NEXT LINE
0964 FAAF 86 3F LDA #'? ; LOAD (?) ERROR INDICATOR
0965 FAB1 17 02 1A LBSR OUTCH ; OUTPUT IT TO TERMINAL
0966 FAB4 73 DF E2 LOAD21 COM ECHO ; TURN ECHO ON
0967 FAB7 86 13 LDA #$13 ; $FC5F LOAD 'DC3' CASS. READ OFF CODE
0968 FAB9 16 02 12 LBRA OUTCH ; OUTPUT IT
0969 *
0970 ***** "P" PUNCH MIKBUG TAPE *****
0971 *
0972 FABC 6F E2 PUNCH CLR ,-S ; CLEAR RESERVED BYTE ON STACK
0973 FABE 17 01 4A LBSR IN2ADR ; GET BEGIN AND END ADDRESS
0974 FAC1 34 30 PSHS X,Y ; SAVE ADDRESSES ON STACK
0975 FAC3 29 4D BVS PUNEXT ; (V) C-CODE SET, EXIT PUNCH
0976 FAC5 AC 62 CMPX 2,S ; COMPARE BEGIN TO END ADDR
0977 FAC7 25 49 BCS PUNEXT ; IF BEGIN GREATER THAN END, EXIT PUNCH
0978 FAC9 30 01 LEAX 1,X ; INCREMENT END ADDRESS
0979 FACB AF E4 STX ,S ; STORE END ADDR ON STACK
0980 FACD BD FC E7 JSR ACINIZ
0981 FAD0 86 12 LDA #$12 ; LOAD 'DC2' PUNCH ON CODE
0982 FAD2 17 01 F9 LBSR OUTCH ; OUTPUT IT TO TERMINAL
0983 FAD5 EC E4 PUNCH2 LDD ,S ; LOAD END ADDR IN D-ACC
0984 FAD7 A3 62 SUBD 2,S ; SUBTRACT BEGIN FROM END
0985 FAD9 27 06 BEQ PUNCH3 ; SAME, PUNCH 32 BYTES DEFAULT
0986 FADB 10 83 00 20 CMPD #$20 ; LESS THAN 32 BYTES?
0987 FADF 23 02 BLS PUNCH4 ; PUNCH THAT MANY BYTES
0988 FAE1 C6 20 PUNCH3 LDB #$20 ; LOAD BYTE COUNT OF 32.
0989 FAE3 E7 64 PUNCH4 STB 4,S ; STORE ON STACK AS BYTE COUNT
0990 FAE5 8E FE E2 LDX #MSG20 ; POINT TO MSG "S1"
0991 FAE8 17 00 2F LBSR PSTRNG ; PRINT MSG
0992 FAEB CB 03 ADDB #3 ; ADD 3 BYTES TO BYTE COUNT
0993 FAED 1F 98 TFR B,A ; GET BYTE COUNT IN A-ACC TO PUNCH
0994 FAEF 17 01 75 LBSR OUT2H ; OUTPUT BYTE COUNT
0995 FAF2 AE 62 LDX 2,S ; LOAD BEGIN ADDRESS
0996 FAF4 17 01 68 LBSR OUT4H ; PUNCH ADDRESS
0997 FAF7 EB 62 ADDB 2,S ; ADD ADDR MSB TO CHECKSUM
0998 FAF9 EB 63 ADDB 3,S ; ADD ADDR LSB TO CHECKSUM
0999 FAFB EB 84 PUNCHL ADDB ,X ; ADD DATA BYTE TO CHECKSUM
1000 FAFD A6 80 LDA ,X+ ; LOAD DATA BYTE TO PUNCH
1001 FAFF 17 01 65 LBSR OUT2H ; OUTPUT DATA BYTE
1002 FB02 6A 64 DEC 4,S ; DECREMENT BYTE COUNT
1003 FB04 26 F5 BNE PUNCHL ; NOT DONE, PUNCH NEXT BYTE
1004 FB06 53 COMB 1's ; COMPLIMENT CHECKSUM BYTE
1005 FB07 1F 98 TFR B,A ; GET IT IN A-ACC TO PUNCH
1006 FB09 17 01 5B LBSR OUT2H ; OUTPUT CHECKSUM BYTE
1007 FB0C AF 62 STX 2,S ; SAVE X-REG IN STACK AS NEW PUNCH ADDR
1008 FB0E AC E4 CMPX ,S ; COMPARE IT TO END ADDR
1009 FB10 26 C3 BNE PUNCH2 ; $FCB5 PUNCH NOT DONE, CONT.
1010 FB12 86 14 PUNEXT LDA #$14 ; LOAD 'DC4' PUNCH OFF CODE
1011 FB14 17 01 B7 LBSR OUTCH ; OUTPUT IT
1012 FB17 32 65 LEAS 5,S ; READJUST STACK POINTER
1013 FB19 39 RTS ;
1014 *
1015 * PRINT STRING PRECEEDED BY A CR & LF.
1016 *
1017 FB1A 8D 02 PSTRNG BSR PCRLF ; PRINT CR/LF
1018 FB1C 20 71 BRA PDATA ; PRINT STRING POINTED TO BY IX
1019 *
1020 * PCRLF
1021 *
1022 FB1E 34 10 PCRLF PSHS X ; SAVE IX
1023 FB20 8E FE 93 LDX #MSG2+1 ; POINT TO MSG CR/LF + 3 NULS
1024 FB23 17 00 69 LBSR PDATA ; PRINT MSG
1025 FB26 35 90 PULS X,PC ; RESTORE IX & RETURN
1026 *
1027 * LONG BRANCHES TO COMMON ROUTINES
1028 *
1029 FB28 16 01 A1 JOUT1S LBRA OUT1S
1030 FB2B 16 00 F8 JBYTE LBRA BYTE
1031 FB2E 16 00 E5 JIN1ADR LBRA IN1ADR
1032 *
1033 * ALTER "PC" PROGRAM COUNTER
1034 *
1035 FB31 17 00 91 ALTRPC LBSR PRTPC ; $FCF5 PRINT MSG " PC = "
1036 FB34 8D F2 ALTPC1 BSR JOUT1S ; OUTPUT SPACE
1037 FB36 8D F6 BSR JIN1ADR ; GET NEW CONTENTS FOR "PC"
1038 FB38 29 02 BVS ALTPCD ; EXIT IF INVALID HEX
1039 FB3A AF 4A STX 10,U ; POKE IN NEW CONTENTS
1040 FB3C 39 ALTPCD RTS ;
1041 *
1042 * ALTER "U" USER STACK POINTER
1043 *
1044 FB3D 8D 61 ALTRU BSR PRTUS ; $FCCA PRINT MSG " US = "
1045 FB3F 8D E7 BSR JOUT1S ; OUTPUT SPACE
1046 FB41 8D EB BSR JIN1ADR ; GET NEW CONTENTS FOR "US"
1047 FB43 29 02 BVS ALTUD ; EXIT IF INVALID HEX
1048 FB45 AF 48 STX 8,U ; POKE IN NEW CONTENTS
1049 FB47 39 ALTUD RTS ;
1050 *
1051 * ALTER "Y" INDEX REGISTER
1052 *
1053 FB48 8D 72 ALTRY BSR PRTIY ; PRINT MSG " IY = "
1054 FB4A 8D DC BSR JOUT1S ; OUTPUT SPACE
1055 FB4C 8D E0 BSR JIN1ADR ; GET NEW CONTENTS FOR "IY"
1056 FB4E 29 02 BVS ALTYD ; EXIT IF INVALID HEX
1057 FB50 AF 46 STX 6,U ; $F8F0 POKE IN NEW CONTENTS
1058 FB52 39 ALTYD RTS ;
1059 *
1060 * ALTER "X" INDEX REGISTER
1061 *
1062 FB53 8D 5E ALTRX BSR PRTIX ; $FCE0 PRINT MSG " IX = "
1063 FB55 8D D1 BSR JOUT1S ; OUTPUT SPACE
1064 FB57 8D D5 BSR JIN1ADR
1065 FB59 29 02 BVS ALTXD
1066 FB5B AF 44 STX 4,U
1067 FB5D 39 ALTXD RTS ;
1068 *
1069 * ALTER "DP" DIRECT PAGE REGISTER
1070 *
1071 FB5E 8D 49 ALTRDP BSR PRTDP ; $FCD5 PRINT MSG " DP = "
1072 FB60 8D C6 BSR JOUT1S ; OUTPUT SPACE
1073 FB62 8D C7 BSR JBYTE ; INPUT BYTE (2 HEX CHAR)
1074 FB64 29 02 BVS ALTDPD
1075 FB66 A7 43 STA 3,U
1076 FB68 39 ALTDPD RTS ;
1077 *
1078 * ALTER "B" ACCUMULATOR
1079 *
1080 FB69 8D 6C ALTRB BSR PRTB ; $FD09 PRINT MSG " B = "
1081 FB6B 8D BB BSR JOUT1S ; OUTPUT SPACE
1082 FB6D 8D BC BSR JBYTE ; INPUT BYTE (2 HEX CHAR)
1083 FB6F 29 02 BVS ALTBD
1084 FB71 A7 42 STA 2,U
1085 FB73 39 ALTBD RTS ; $F91C
1086 *
1087 * ALTER "A" ACCUMULATOR
1088 *
1089 FB74 8D 58 ALTRA BSR PRTA ; $FCFF RINT MSG " A = "
1090 FB76 8D B0 BSR JOUT1S ; OUTPUT SPACE
1091 FB78 8D B1 BSR JBYTE ; INPUT BYTE (2 HEX CHAR)
1092 FB7A 29 02 BVS ALTAD
1093 FB7C A7 41 STA 1,U
1094 FB7E 39 ALTAD RTS ;
1095 *
1096 * ALTER "CC" REGISTER
1097 *
1098 FB7F 8D 5F ALTRCC BSR PRTCC ; $FD13 PRINT MSG " CC: "
1099 FB81 8D A5 BSR JOUT1S ; OUTPUT SPACE
1100 FB83 8D A6 BSR JBYTE ; INPUT BYTE (2 HEX CHAR)
1101 FB85 29 04 BVS ALTCCD
1102 FB87 8A 80 ORA #$80 ; SETS "E" FLAG IN PRINT LIST
1103 FB89 A7 C4 STA ,U
1104 FB8B 39 ALTCCD RTS ;
1105 *
1106 * PDATA
1107 *
1108 FB8C 17 01 3F PRINT LBSR OUTCH
1109 FB8F A6 80 PDATA LDA ,X+ ; GET 1st CHAR. TO PRINT
1110 FB91 81 04 CMPA #4 ; IS IT EOT?
1111 FB93 26 F7 BNE PRINT ; IF NOT EOT PRINT IT
1112 FB95 39 RTS ;
1113 *
1114 * PRINT REGISTERS
1115 *
1116 FB96 8E FE A5 PRTSP LDX #MSG10 ; POINT TO MSG "SP="
1117 FB99 8D F4 BSR PDATA ; PRINT MSG
1118 FB9B 1F 31 TFR U,X
1119 FB9D 16 00 BF JOUT4H LBRA OUT4H
1120 *
1121 FBA0 8E FE B1 PRTUS LDX #MSG12 ; POINT TO MSG "US="
1122 FBA3 8D EA BSR PDATA ; PRINT MSG
1123 FBA5 AE 48 LDX 8,U
1124 FBA7 20 F4 BRA JOUT4H
1125 *
1126 FBA9 8E FE C3 PRTDP LDX #MSG15 ; POINT TO MSG "DP="
1127 FBAC 8D E1 BSR PDATA ; PRINT MSG
1128 FBAE A6 43 LDA 3,U
1129 FBB0 16 00 B4 JOUT2H LBRA OUT2H ; OUTPUT HEX BYTE AS ASCII
1130 *
1131 FBB3 8E FE BD PRTIX LDX #MSG14 ; POINT TO MSG "IX="
1132 FBB6 8D D7 BSR PDATA ; PRINT MSG
1133 FBB8 AE 44 LDX 4,U ; $FCE6
1134 FBBA 20 E1 BRA JOUT4H
1135 *
1136 FBBC 8E FE B7 PRTIY LDX #MSG13 ; POINT TO MSG "IY="
1137 FBBF 8D CE BSR PDATA ; PRINT MSG
1138 FBC1 AE 46 LDX 6,U
1139 FBC3 20 D8 BRA JOUT4H
1140 *
1141 FBC5 8E FE AB PRTPC LDX #MSG11 ; POINT TO MSG "PC="
1142 FBC8 8D C5 BSR PDATA ; PRINT MSG
1143 FBCA AE 4A LDX 10,U
1144 FBCC 20 CF BRA JOUT4H
1145 *
1146 FBCE 8E FE C9 PRTA LDX #MSG16 ; POINT TO MSG "A="
1147 FBD1 8D BC BSR PDATA ; PRINT MSG
1148 FBD3 A6 41 LDA 1,U
1149 FBD5 20 D9 BRA JOUT2H ; OUTPUT HEX BYTE AS ASCII
1150 *
1151 FBD7 8E FE CE PRTB LDX #MSG17 ; POINT TO MSG "B="
1152 FBDA 8D B3 BSR PDATA ; PRINT MSG
1153 FBDC A6 42 LDA 2,U
1154 FBDE 20 D0 BRA JOUT2H ; OUTPUT HEX BYTE AS ASCII
1155 *
1156 FBE0 8E FE D3 PRTCC LDX #MSG18 ; POINT TO MSG "CC:"
1157 FBE3 8D AA BSR PDATA ; PRINT MSG
1158 FBE5 A6 C4 LDA ,U
1159 FBE7 8E FE DA LDX #MSG19 ; POINT TO MSG "EFHINZVC"
1160 FBEA 16 00 90 LBRA BIASCI ; OUTPUT IN BINARY/ASCII FORMAT
1161 *
1162 * "R" DISPLAY REGISTERS
1163 *
1164 FBED 8E FE A1 REGSTR LDX #MSG5 ; POINT TO MSG " - "
1165 FBF0 17 FF 27 LBSR PSTRNG ; PRINT MSG
1166 FBF3 8D A1 BSR PRTSP ; $FCBF
1167 FBF5 8D A9 BSR PRTUS ; $FCCA
1168 FBF7 8D B0 BSR PRTDP ; $FCD5
1169 FBF9 8D B8 BSR PRTIX ; $FCE0
1170 FBFB 8D BF BSR PRTIY ; $FCEB
1171 FBFD 8E FE A1 LDX #MSG5 ; POINT TO MSG " - "
1172 FC00 17 FF 17 LBSR PSTRNG ; PRINT MSG
1173 FC03 8D C0 BSR PRTPC ; $FCF5
1174 FC05 8D C7 BSR PRTA ; $FCFF
1175 FC07 8D CE BSR PRTB ; $FD09
1176 FC09 20 D5 BRA PRTCC ; $FD13
1177 *
1178 * THE FOLLOWING ROUTINE LOOPS WAITING FOR THE
1179 * OPERATOR TO INPUT TWO VALID HEX ADDRESSES.
1180 * THE FIRST ADDRESS INPUT IS RETURNED IN "IY".
1181 * THE SECOND IS RETURNED IN "IX". THE "V" BIT
1182 * IN THE C-CODE REG. IS SET IF AN INVALID HEX
1183 * ADDRESS IS INPUT.
1184 *
1185 FC0B 8D 09 IN2ADR BSR IN1ADR ; GET FIRST ADDRESS
1186 FC0D 29 4D BVS NOTHEX ; EXIT IF NOT VALID HEX
1187 FC0F 1F 12 TFR X,Y ; SAVE FIRST ADDR. IN "IY"
1188 FC11 86 2D LDA #'-
1189 FC13 17 00 B8 LBSR OUTCH ; PRINT " - "
1190 *
1191 * THE FOLLOWING ROUTINE LOOPS WAITING FOR THE
1192 * OPERATOR TO INPUT ONE VALID HEX ADDRESS. THE
1193 * ADDRESS IS RETURNED IN THE "X" REGISTER.
1194 *
1195 FC16 8D 0E IN1ADR BSR BYTE ; INPUT BYTE (2 HEX CHAR)
1196 FC18 29 42 BVS NOTHEX ; EXIT IF NOT VALID HEX
1197 FC1A 1F 01 TFR D,X
1198 FC1C 8D 08 BSR BYTE ; INPUT BYTE (2 HEX CHAR)
1199 FC1E 29 3C BVS NOTHEX
1200 FC20 34 10 PSHS X
1201 FC22 A7 61 STA 1,S
1202 FC24 35 90 PULS X,PC
1203 *
1204 ***** INPUT BYTE (2 HEX CHAR.) *****
1205 *
1206 FC26 8D 11 BYTE BSR INHEX ; GET HEX LEFT
1207 FC28 29 32 BVS NOTHEX ; EXIT IF NOT VALID HEX
1208 FC2A 48 ASLA ;
1209 FC2B 48 ASLA ;
1210 FC2C 48 ASLA ; SHIFT INTO LEFT NIBBLE
1211 FC2D 48 ASLA ;
1212 FC2E 1F 89 TFR A,B ; PUT HEXL IN "B"
1213 FC30 8D 07 BSR INHEX ; GET HEX RIGHT
1214 FC32 29 28 BVS NOTHEX ; EXIT IF NOT VALID HEX
1215 FC34 34 04 PSHS B ; PUSH HEXL ON STACK
1216 FC36 AB E0 ADDA ,S+ ; ADD HEXL TO HEXR AND ADJ. STK
1217 FC38 39 RTS ; RETURN WITH HEX L&R IN "A"
1218 *
1219 *
1220 FC39 8D 5B INHEX BSR ECHON ; INPUT ASCII CHAR.
1221 FC3B 81 30 CMPA #'0 ; IS IT > OR = "0" ?
1222 FC3D 25 1D BCS NOTHEX ; IF LESS IT AIN'T HEX
1223 FC3F 81 39 CMPA #'9 ; IS IT < OR = "9" ?
1224 FC41 22 03 BHI INHEXA ; IF > MAYBE IT'S ALPHA
1225 FC43 80 30 SUBA #$30 ; ASCII ADJ. NUMERIC
1226 FC45 39 RTS ;
1227 *
1228 *
1229 FC46 81 41 INHEXA CMPA #'A ; IS IT > OR = "A"
1230 FC48 25 12 BCS NOTHEX ; IF LESS IT AIN'T HEX
1231 FC4A 81 46 CMPA #'F ; IS IT < OR = "F" ?
1232 FC4C 22 03 BHI INHEXL ; IF > IT AIN'T HEX
1233 FC4E 80 37 SUBA #'A-10 ; ($37) ASCII ADJ. ALPHA
1234 FC50 39 RTS ;
1235 *
1236 FC51 81 61 INHEXL CMPA #'a ; IS IT > OR = "a"
1237 FC53 25 07 BCS NOTHEX ; IF LESS IT AIN'T HEX
1238 FC55 81 66 CMPA #'f ; IS IT < "f"
1239 FC57 22 03 BHI NOTHEX ; IF > IT AIN'T HEX
1240 FC59 80 57 SUBA #'a-10 ; ($57) ADJUST TO LOWER CASE
1241 FC5B 39 RTS ;
1242 *
1243 *
1244 FC5C 1A 02 NOTHEX ORCC #2 ; SET (V) FLAG IN C-CODES REGISTER
1245 FC5E 39 RTS ;
1246 *
1247 *
1248 FC5F 34 10 OUT4H PSHS X ; PUSH X-REG. ON THE STACK
1249 FC61 35 02 PULS A ; POP MS BYTE OF X-REG INTO A-ACC.
1250 FC63 8D 02 BSR OUTHL ; OUTPUT HEX LEFT
1251 FC65 35 02 PULS A ; POP LS BYTE OF X-REG INTO A-ACC.
1252 FC67 OUTHL EQU *
1253 FC67 34 02 OUT2H PSHS A ; SAVE IT BACK ON STACK
1254 FC69 44 LSRA ; CONVERT UPPER HEX NIBBLE TO ASCII
1255 FC6A 44 LSRA ;
1256 FC6B 44 LSRA ;
1257 FC6C 44 LSRA ;
1258 FC6D 8D 04 BSR XASCII ; PRINT HEX NIBBLE AS ASCII
1259 FC6F 35 02 OUTHR PULS A ; CONVERT LOWER HEX NIBBLE TO ASCII
1260 FC71 84 0F ANDA #$0F ; STRIP LEFT NIBBLE
1261 FC73 8B 30 XASCII ADDA #$30 ; ASCII ADJ
1262 FC75 81 39 CMPA #$39 ; IS IT < OR = "9" ?
1263 FC77 2F 02 BLE OUTC ; IF LESS, OUTPUT IT
1264 FC79 8B 07 ADDA #7 ; IF > MAKE ASCII LETTER
1265 FC7B 20 51 OUTC BRA OUTCH ; OUTPUT CHAR
1266 *
1267 * BINARY / ASCII --- THIS ROUTINE
1268 * OUTPUTS A BYTE IN ENHANCED
1269 * BINARY FORMAT. THE ENHANCEMENT
1270 * IS DONE BY SUBSTITUTING ASCII
1271 * LETTERS FOR THE ONES IN THE BYTE.
1272 * THE ASCII ENHANCEMENT LETTERS
1273 * ARE OBTAINED FROM THE STRING
1274 * POINTED TO BY THE INDEX REG. "X".
1275 *
1276 FC7D 34 02 BIASCI PSHS A ; SAVE "A" ON STACK
1277 FC7F C6 08 LDB #8 ; PRESET LOOP# TO BITS PER BYTE
1278 FC81 A6 80 OUTBA LDA ,X+ ; GET LETTER FROM STRING
1279 FC83 68 E4 ASL ,S ; TEST BYTE FOR "1" IN B7
1280 FC85 25 02 BCS PRTBA ; IF ONE PRINT LETTER
1281 FC87 86 2D LDA #'- ; IF ZERO PRINT "-"
1282 FC89 8D 43 PRTBA BSR OUTCH ; PRINT IT
1283 FC8B 8D 3F BSR OUT1S ; PRINT SPACE
1284 FC8D 5A DECB ; SUB 1 FROM #BITS YET TO PRINT
1285 FC8E 26 F1 BNE OUTBA
1286 FC90 35 82 PULS A,PC
1287 *
1288 IFD EXTOPT
1289 *
1290 * EXTENDED USER COMMANDS
1291 *
1292 FC92 6E 9F F0 00 USRCMD JMP [MONEXT+EXTCMD]
1293 ENDIF EXTOPT
1294 *
1295 *
1296 FC96 7D DF E2 ECHON TST ECHO ; IS ECHO REQUIRED ?
1297 FC99 27 06 BEQ INCH ; ECHO NOT REQ. IF CLEAR
1298 *
1299 * INCHE
1300 *
1301 * GETS CHARACTER FROM TERMINAL AND
1302 * ECHOS SAME. THE CHARACTER IS RETURNED
1303 * IN THE "A" ACCUMULATOR WITH THE PARITY
1304 * BIT MASKED OFF. ALL OTHER REGISTERS
1305 * ARE PRESERVED.
1306 *
1307 FC9B 8D 04 INCHE BSR INCH ; GET CHAR FROM TERMINAL
1308 FC9D 84 7F ANDA #$7F ; STRIP PARITY FROM CHAR.
1309 FC9F 20 2D BRA OUTCH ; ECHO CHAR TO TERMINAL
1310 *
1311 * INCH
1312 *
1313 * GET CHARACTER FROM TERMINAL. RETURN
1314 * CHARACTER IN "A" ACCUMULATOR AND PRESERVE
1315 * ALL OTHER REGISTERS. THE INPUT CHARACTER
1316 * IS 8 BITS AND IS NOT ECHOED.
1317 *
1318 *
1319 FCA1 34 10 INCH PSHS X ; SAVE IX
1320 IFD HFCOPT
1321 LDA #$11 ; SET RTS* LOW, REQUEST FAR END TO TX
1322 STA [CPORT]
1323 ENDIF HFCOPT
1323 ENDIF HFCOPT
1324 FCA3 BE DF E0 GETSTA LDX CPORT ; POINT TO TERMINAL PORT
1325 FCA6 A6 84 LDA ,X ; FETCH PORT STATUS
1326 FCA8 85 01 BITA #1 ; TEST READY BIT, RDRF ?
1327 IFD PS2OPT
1328 FCAA 26 09 BNE GETST1
1329 FCAC 8E E0 20 LDX #PS2KBD
1330 FCAF A6 84 LDA ,X
1331 FCB1 85 01 BITA #1
1332 ENDIF PS2OPT
1333 FCB3 27 EE BEQ GETSTA ; IF NOT RDY, THEN TRY AGAIN
1334 FCB5 GETST1 EQU *
1335 IFD HFCOPT
1336 LDA #$51 ; SET RTS* HIGH, STOP FAR END FROM TXING, UNTIL NEXT INPUT
1337 STA [CPORT]
1338 ENDIF HFCOPT
1338 ENDIF HFCOPT
1339 FCB5 A6 01 LDA 1,X ; FETCH CHAR
1340 FCB7 35 90 PULS X,PC ; RESTORE IX
1341 *
1342 * INCHEK
1343 *
1344 * CHECK FOR A CHARACTER AVAILABLE FROM
1345 * THE TERMINAL. THE SERIAL PORT IS CHECKED
1346 * FOR READ READY. ALL REGISTERS ARE
1347 * PRESERVED, AND THE "Z" BIT WILL BE
1348 * CLEAR IF A CHARACTER CAN BE READ.
1349 *
1350 *
1351 FCB9 34 02 INCHEK PSHS A ; SAVE A ACCUM
1352 IFD HFCOPT
1353 LDA #$11 ; SET RTS* LOW, REQUEST FAR END TO TX
1354 STA [CPORT]
1355 ENDIF HFCOPT
1355 ENDIF HFCOPT
1356 FCBB A6 9F DF E0 LDA [CPORT] ; FETCH PORT STATUS
1357 FCBF 85 01 BITA #1 ; TEST READY BIT, RDRF ?
1358 IFD PS2OPT
1359 FCC1 26 05 BNE INCHEK1
1360 FCC3 B6 E0 20 LDA PS2KBD
1361 FCC6 85 01 BITA #1 ; TEST READY BIT< RDRF ?
1362 ENDIF PS2OPT
1363 FCC8 35 82 INCHEK1 PULS A,PC ; RESTORE A ACCUM.
1364 *
1365 FCCA 8D 00 OUT2S BSR OUT1S ; OUTPUT 2 SPACES
1366 FCCC 86 20 OUT1S LDA #$20 ; OUTPUT 1 SPACE
1367 *
1368 *
1369 * OUTCH
1370 *
1371 * OUTPUT CHARACTER TO TERMINAL.
1372 * THE CHAR. TO BE OUTPUT IS
1373 * PASSED IN THE A REGISTER.
1374 * ALL REGISTERS ARE PRESERVED.
1375 *
1376 OUTCH IFD VDUOPT
1377 FCCE 8D 49 BSR VOUTCH
1378 ENDIF VDUOPT
1379 IFD DG640OPT
1380 BSR VOUTCH
1381 ENDIF DG640OPT
1381 ENDIF DG640OPT
1382 FCD0 34 12 AOUTCH PSHS A,X ; SAVE A ACCUM AND IX
1383 FCD2 BE DF E0 LDX CPORT ; GET ADDR. OF TERMINAL
1384 FCD5 A6 84 FETSTA LDA ,X ; FETCH PORT STATUS
1385 FCD7 85 02 BITA #2 ; TEST TDRE, OK TO XMIT ?
1386 FCD9 27 FA BEQ FETSTA ; IF NOT LOOP UNTIL RDY
1387 FCDB 85 08 BITA #8 ; CLEAR TO SEND ?
1388 FCDD 26 F6 BNE FETSTA ; NO, LOOP UNTIL CLEAR
1389 FCDF 35 02 PULS A ; GET CHAR. FOR XMIT
1390 FCE1 A7 01 STA 1,X ; XMIT CHAR.
1391 FCE3 35 90 PULS X,PC ; RESTORE IX
1392 *
1393 * IO INITIALIZATION
1394 *
1395 FCE5 IOINIZ EQU *
1396 IFD VDUOPT
1397 FCE5 8D 13 BSR VINIZ
1398 ENDIF VDUOPT
1399 IFD DG640OPT
1400 BSR VINIZ
1401 ENDIF DG640OPT
1401 ENDIF DG640OPT
1402 FCE7 BE DF E0 ACINIZ LDX CPORT ; POINT TO CONTROL PORT ADDRESS
1403 FCEA 86 03 LDA #3 ; RESET ACIA PORT CODE
1404 FCEC A7 84 STA ,X ; STORE IN CONTROL REGISTER
1405 FCEE 86 51 LDA #$51 ; SET 8 DATA, 2 STOP AN 0 PARITY RTS* HIGH
1406 FCF0 A7 84 STA ,X ; STORE IN CONTROL REGISTER
1407 FCF2 6D 01 TST 1,X ; ANYTHING IN DATA REGISTER?
1408 FCF4 86 FF LDA #$FF ; TURN ON ECHO FLAG
1409 FCF6 B7 DF E2 STA ECHO
1410 FCF9 39 RTS
1411 *
1412 IFD VDUOPT
1413 *
1414 ***************************************************
1415 * VDU8 ADM3A REGISTER-MAPPED EMULATOR *
1416 * *
1417 * 80 x 25 Characters
1418 *
1419 ***************************************************
1420 *
1421 ***************************************************
1422 * INITIALIZE EMULATOR *
1423 ***************************************************
1424 *
1425 FCFA 8E E0 30 VINIZ LDX #VDU
1426 FCFD CC 00 00 LDD #0
1427 FD00 FD DF FB STD COLADX ; AND ROWADX
1428 FD03 A7 02 STA VDUCOL,X
1429 FD05 E7 03 STB VDUROW,X
1430 FD07 E7 04 STB VDUOFF,X
1431 FD09 FD DF FD STD NEWROW ; AND ESCFLG
1432 FD0C C6 02 LDB #$02
1433 FD0E E7 01 STB VDUATT,X
1434 FD10 7F DF FE CLR ESCFLG
1435 FD13 86 1B LDA #$1B ; SEND ESCAPE
1436 FD15 8D 02 BSR VOUTCH
1437 FD17 86 59 LDA #'Y ; CLEAR TO END OF SCREEN
1438 *
1439 ** VIDEO OUTPUT ROUTINE
1440 *
1441 FD19 34 16 VOUTCH PSHS A,B,X ; SAVE REGISTERS
1442 FD1B 8E E0 30 LDX #VDU ; POINT TO VDU REGISTERS
1443 *
1444 ** CHECK FOR ESCAPE SEQUENCE
1445 *
1446 FD1E 7D DF FE TST ESCFLG ; ESCAPE ACTIVE?
1447 FD21 27 04 BEQ SOROU1 ; BRANCH IF NOT
1448 FD23 8D 60 BSR ESCAPE ; ELSE DO ESCAPE
1449 FD25 20 0D BRA RETURN ; AND RETURN
1450 *
1451 ** CHECK FOR CONTROL CHARACTERS
1452 *
1453 FD27 81 20 SOROU1 CMPA #$20 ; CONTROL CODES?
1454 FD29 24 04 BHS SOROU2
1455 FD2B 8D 09 BSR CONTRL ; BRANCH IF SO
1456 FD2D 20 05 BRA RETURN
1457 *
1458 ** OUTPUT TEXT CHARACTER
1459 *
1460 FD2F A7 84 SOROU2 STA VDUCHR,X ; DISPLAY CHARACTER
1461 FD31 17 00 AF LBSR NEWCOL ; UPDATE COLUMN
1462 *
1463 ** DISPLAY CURSOR AND RETURN
1464 *
1465 FD34 35 96 RETURN PULS A,B,X,PC ; RESTORE REGISTERS AND RETURN
1466 *
1467 ***************************************************
1468 * CONTROL CODE HANDLERS *
1469 ***************************************************
1470 *
1471 FD36 81 08 CONTRL CMPA #$08 ; CTRL H - BACKSPACE ?
1472 FD38 27 34 BEQ BACKSP
1473 FD3A 81 1B CMPA #$1B ; ESCAPE SEQUENCE?
1474 FD3C 27 5A BEQ SETESC
1475 FD3E 81 1A CMPA #$1A ; CTRL Z - Clear Screen
1476 FD40 10 27 00 7C LBEQ CLRSCR
1477 FD44 81 16 CMPA #$16 ; CTRL ^ - Home
1478 FD46 27 38 BEQ HOME
1479 FD48 81 0D CMPA #$0D ; CTRL M - RETURN?
1480 FD4A 10 27 00 89 LBEQ CRETN
1481 FD4E 81 0C CMPA #$0C ; CTRL L - CHAR RIGHT
1482 FD50 27 24 BEQ CHRIGHT
1483 FD52 81 0B CMPA #$0B ; CTRL K - MOVE UP ONE LINE
1484 FD54 27 0F BEQ LINEUP
1485 FD56 81 0A CMPA #$0A ; CTRL J - LINE FEED
1486 FD58 26 45 BNE RETESC ; NONE OF THESE, RETURN
1487 *
1488 ***************************************** LINE FEED
1489 *
1490 FD5A FC DF FB LINEFD LDD COLADX ; GET CURRENT COLUMN AND ROW
1491 FD5D 5C INCB ; BUMP ROW
1492 FD5E C1 19 CMPB #NUMLIN ; SCROLL TIME?
1493 FD60 26 79 BNE NEWCUR ; POSITION CURSOR IF NOT
1494 FD62 16 00 8F LBRA SCROLL ; ELSE SCROLL IT
1495 *
1496 ***************************************** LINE FEED
1497 *
1498 FD65 FC DF FB LINEUP LDD COLADX ; GET CURRENT COLUMN AND ROW
1499 FD68 5D TSTB ; AT TOP OF SCREEN ?
1500 FD69 27 34 BEQ RETESC ; Yes, Ignore
1501 FD6B 5A DECB ; No, Decrement ROW
1502 FD6C 20 6D BRA NEWCUR ; POSITION CURSOR
1503 *
1504 *********************************** BACK SPACE
1505 *
1506 FD6E B6 DF FB BACKSP LDA COLADX
1507 FD71 27 2C BEQ RETESC ; RETURN
1508 FD73 4A DECA
1509 FD74 20 62 BRA POSCOL ; POSITION CURSOR
1510 *
1511 *********************************** CURSOR RIGHT
1512 *
1513 FD76 B6 DF FB CHRIGHT LDA COLADX
1514 FD79 4C INCA
1515 FD7A 81 50 CMPA #LINLEN
1516 FD7C 27 21 BEQ RETESC
1517 FD7E 20 58 BRA POSCOL
1518 *
1519 *********************************** CURSOR RIGHT
1520 *
1521 FD80 CC 00 00 HOME LDD #0 ; HOME - POSITION TOP OF SCREEN
1522 FD83 20 56 BRA NEWCUR
1523 *
1524 ***************************************************
1525 * ESCAPE HANDLERS *
1526 ***************************************************
1527 *
1528 FD85 F6 DF FE ESCAPE LDB ESCFLG ; GET FLAG
1529 FD88 C1 3D CMPB #'= ; SETTING CURSOR?
1530 FD8A 27 14 BEQ ESCCUR ; BRANCH IF SO
1531 FD8C 81 59 CMPA #'Y ; CLEAR TO END OF SCREEN?
1532 FD8E 27 6E BEQ ESCCLS
1533 FD90 81 54 CMPA #'T ; CLEAR TO END OF LINE?
1534 FD92 27 31 BEQ ESCCLL
1535 FD94 81 3D CMPA #'= ; STARTING CURSOR SET?
1536 FD96 26 04 BNE CLRESC ; BRANCH IF NOT
1537 *
1538 ***************************** START ESCAPE SEQUENCE
1539 *
1540 FD98 B7 DF FE SETESC STA ESCFLG ; ELSE START CURSORING
1541 FD9B 39 RTS ; AND RETURN
1542 *
1543 FD9C 7F DF FE CLRESC CLR ESCFLG ; NO OTHERS SUPPORTED
1544 FD9F 39 RETESC RTS ; SO RETURN
1545 *
1546 ********************************* SET SCREEN CURSOR
1547 *
1548 FDA0 7D DF FD ESCCUR TST NEWROW ; ROW SET?
1549 FDA3 26 04 BNE ESCCU1 ; BRANCH IF SO
1550 FDA5 B7 DF FD STA NEWROW ; ELSE SET NEW ROW
1551 FDA8 39 RTS ; AND RETURN
1552 *
1553 FDA9 7F DF FE ESCCU1 CLR ESCFLG
1554 FDAC 80 20 SUBA #$20 ; ADJUST COLUMN ADDRESS
1555 FDAE 81 4F CMPA #LINLEN-1 ;CHECK FOR ACCEPTABLE COLUM
1556 FDB0 22 ED BHI RETESC ; NOT OK, DO NOTHING
1557 *
1558 FDB2 F6 DF FD ESCCU2 LDB NEWROW
1559 FDB5 7F DF FD CLR NEWROW
1560 FDB8 C0 20 SUBB #$20 ; ADJUST TO ROW ADDRESS
1561 FDBA C1 18 CMPB #NUMLIN-1 ; CHECK FOR ACCEPTABLE ROW
1562 FDBC 22 E1 BHI RETESC ; ELSE RETURN DOING NOTHING
1563 FDBE 20 1B BRA NEWCUR ; GO SET NEW CURSOR IF SO
1564 *
1565 ****************** CLEAR FROM CURSOR TO END OF LINE
1566 *
1567 FDC0 CC 00 00 CLRSCR LDD #0 ; CLEAR FROM TOP OF SCREEN
1568 FDC3 8D 16 BSR NEWCUR
1569 FDC5 B6 DF FB ESCCLL LDA COLADX
1570 FDC8 C6 20 LDB #$20 ; AND CLEAR CHAR
1571 FDCA E7 84 ESCCL1 STB VDUCHR,X ; DISPLAY TEXT
1572 FDCC 4C INCA
1573 FDCD A7 02 STA VDUCOL,X
1574 FDCF 81 50 CMPA #LINLEN ; UNTIL END OF LINE
1575 FDD1 26 F7 BNE ESCCL1
1576 FDD3 7F DF FE CLR ESCFLG
1577 FDD6 39 RTS
1578 *
1579 *********************************** CARRIAGE RETURN
1580 *
1581 FDD7 4F CRETN CLRA ; SET COLUMN ZERO
1582 FDD8 F6 DF FC POSCOL LDB ROWADX ; GET CURRENT ROW
1583 *
1584 *********** GENERATE NEW CURSOR POSITION AND RETURN
1585 *
1586 FDDB FD DF FB NEWCUR STD COLADX ; SAVE NEW ROW AND COLUMN
1587 FDDE A7 02 STA VDUCOL,X ; SET NEW COLUMN
1588 FDE0 E7 03 STB VDUROW,X ; SET NEW ROW
1589 FDE2 39 RTS ; AND RETURN
1590 *
1591 ********************* UPDATE CURRENT COLUMN AND ROW
1592 *
1593 FDE3 FC DF FB NEWCOL LDD COLADX ; GET ROW AND COLUMN
1594 FDE6 4C INCA ; BUMP COLUMN
1595 FDE7 81 50 CMPA #LINLEN ; ROLL?
1596 FDE9 26 F0 BNE NEWCUR ; BRANCH IF NOT
1597 FDEB 4F CLRA ; ELSE RESET TO ZERO
1598 FDEC 5C INCB ; AND BUMP ROW
1599 FDED C1 19 CMPB #NUMLIN
1600 FDEF 26 EA BNE NEWCUR
1601 FDF1 5A DECB ; BOTTOM ROW
1602 FDF2 8D E7 BSR NEWCUR
1603 *
1604 ********************************* SCROLL THE SCREEN
1605 *
1606 FDF4 E6 04 SCROLL LDB VDUOFF,X
1607 FDF6 5C INCB
1608 FDF7 C1 19 CMPB #NUMLIN
1609 FDF9 25 01 BLO SCROL1
1610 FDFB 5F CLRB
1611 FDFC E7 04 SCROL1 STB VDUOFF,X
1612 *
1613 **************** CLEAR FROM CURSOR TO END OF SCREEN
1614 *
1615 FDFE F6 DF FB ESCCLS LDB COLADX ; GET CURSOR
1616 FE01 86 20 LDA #$20 ; GET A SPACE
1617 FE03 F7 DF FB ESCCLS1 STB COLADX
1618 FE06 E7 02 STB VDUCOL,X
1619 FE08 A7 84 STA VDUCHR,X
1620 FE0A 5C INCB
1621 FE0B C1 50 CMPB #LINLEN
1622 FE0D 26 F4 BNE ESCCLS1
1623 *
1624 FE0F F6 DF FC LDB ROWADX
1625 FE12 5C INCB
1626 FE13 C1 19 CMPB #NUMLIN
1627 FE15 27 08 BEQ ESCCLS2
1628 FE17 F7 DF FC STB ROWADX
1629 FE1A E7 03 STB VDUROW,X
1630 FE1C 5F CLRB
1631 FE1D 20 E4 BRA ESCCLS1
1632 *
1633 FE1F 5F ESCCLS2 CLRB
1634 FE20 F7 DF FB STB COLADX
1635 FE23 E7 02 STB VDUCOL,X
1636 FE25 F7 DF FE STB ESCFLG
1637 FE28 39 RTS
1638 ENDIF VDUOPT
1639 *
1640 IFD DG640OPT
1641 ***************************************************
1642 * TELEVIDEO-TYPE MEMORY-MAPPED EMULATOR *
1643 * *
1644 * FOR HARD-WIRED MEMORY-MAPPED DISPLAYS USING THE *
1645 * HIGH ORDER BIT OF EACH BYTE FOR REVERSE VIDEO *
1646 * CURSORING (SUCH AS THE THOMAS INSTRUMENTATION *
1647 * 16x64 BOARD). *
1648 ***************************************************
1649 *
1650 ***************************************************
1651 * INITIALIZE EMULATOR *
1652 ***************************************************
1653 *
1654 VINIZ LDX #0
1655 STX COLADX ; AND ROWADX
1656 STX NEWROW ; AND ESCFLG
1657 LDX #SCREEN ; POINT TO SCREEN
1658 STX CURSOR ; SET PROGRAM CURSOR
1659 LDA #$1B ; SEND ESCAPE
1660 BSR VOUTCH
1661 LDA #'Y ; CLEAR TO END OF SCREEN
1662 *
1663 ** VIDEO OUTPUT ROUTINE
1664 *
1665 VOUTCH PSHS A,B,X ; SAVE REGISTERS
1666 *
1667 ** CLEAR CURSOR
1668 *
1669 LDX CURSOR
1670 LDB 0,X
1671 ANDB #$7F
1672 STB 0,X
1673 *
1674 ** CHECK FOR ESCAPE SEQUENCE
1675 *
1676 TST ESCFLG ; ESCAPE ACTIVE?
1677 BEQ SOROU1 ; BRANCH IF NOT
1678 BSR ESCAPE ; ELSE DO ESCAPE
1679 BRA RETURN ; AND RETURN
1680 *
1681 ** CHECK FOR CONTROL CHARACTERS
1682 *
1683 SOROU1 CMPA #$20 ; CONTROL CODES?
1684 BHS SOROU2
1685 BSR CONTRL ; BRANCH IF SO
1686 BRA RETURN
1687 *
1688 ** OUTPUT TEXT CHARACTER
1689 *
1690 SOROU2 LDX CURSOR ; ELSE GET CURSOR
1691 STA 0,X ; DISPLAY CHARACTER
1692 LBSR NEWCOL ; UPDATE COLUMN
1693 *
1694 ** DISPLAY CURSOR AND RETURN
1695 *
1696 RETURN LDX CURSOR ; AND DISPLAY IT
1697 LDB ,X
1698 ORB #$80 ; WITH REVID
1699 STB ,X
1700 PULS A,B,X,PC ; RESTORE REGISTERS AND RETURN
1701 *
1702 ***************************************************
1703 * CONTROL CODE HANDLERS *
1704 ***************************************************
1705 *
1706 CONTRL CMPA #$08 ; CTRL H - BACKSPACE ?
1707 LBEQ BACKSP
1708 CMPA #$1B ; ESCAPE SEQUENCE?
1709 LBEQ SETESC
1710 CMPA #$D ; CTRL M - RETURN?
1711 LBEQ CRETN
1712 CMPA #$0A ; CTRL J - LINE FEED
1713 BNE RETESC ; NONE OF THESE, RETURN
1714 *
1715 ***************************************** LINE FEED
1716 *
1717 LINEFD LDD COLADX ; GET CURRENT COLUMN AND ROW
1718 INCB ; BUMP ROW
1719 CMPB #NUMLIN ; SCROLL TIME?
1720 LBNE NEWCUR ; POSITION CURSOR IF NOT
1721 LBRA SCROLL ; ELSE SCROLL IT
1722 *
1723 ***************************************** LINE FEED
1724 *
1725 LINEUP LDD COLADX ; GET CURRENT COLUMN AND ROW
1726 TSTB ; AT TOP OF SCREEN ?
1727 BEQ RETESC ; YES, RETURN
1728 DECB ; NO, DECREMENT ROW
1729 LBRA NEWCUR ; POSITION CURSOR
1730 *
1731 *********************************** BACK SPACE
1732 *
1733 BACKSP LDA COLADX ; GET CURRENT COLUMN AND ROW
1734 BEQ RETESC ; IF AT TOP LEFT CORNER RETURN
1735 DECA ; OTHERWISE BACK STEP ONE CHARACTER
1736 LBRA POSCOL ; POSITION CURSOR
1737 *
1738 *********************************** CURSOR RIGHT
1739 *
1740 CHRIGHT LDA COLADX ; GET CURRENT COLUMN AND ROW
1741 INCA ; MOVE RIGHT ONE CHARACTER
1742 CMPA #LINLEN ; ARE WE AT THE END OF THE LINE ?
1743 BEQ RETESC ; YES, RETURN
1744 LBRA POSCOL ; NO, POSITION CURSOR
1745 *
1746 ***************************************************
1747 * ESCAPE HANDLERS *
1748 ***************************************************
1749 *
1750 ESCAPE LDB ESCFLG ; ARE WE IN AN ESCAPE SEQUENCE ?
1751 CMPB #'= ; ARE WE SETTING CURSOR?
1752 BEQ ESCCUR ; YES BRANCH TO SET CURSOR
1753 CMPA #'Y ; CLEAR TO END OF SCREEN?
1754 LBEQ ESCCLS ; YES, CLEAR SCREEN
1755 CMPA #'T ; CLEAR TO END OF LINE?
1756 BEQ ESCCLL ; YES, CLEAR LINE
1757 CMPA #'E ; INSERT LINE?
1758 BEQ ESCINL
1759 CMPA #'R ; DELETE LINE?
1760 BEQ ESCDLL
1761 CMPA #'= ; STARTING CURSOR SET?
1762 BNE CLRESC ; BRANCH IF NOT
1763 *
1764 ***************************** START ESCAPE SEQUENCE
1765 *
1766 SETESC STA ESCFLG ; ELSE START CURSORING
1767 RTS ; AND RETURN
1768 *
1769 CLRESC CLR ESCFLG ; NO OTHERS SUPPORTED
1770 RETESC RTS ; SO RETURN
1771 *
1772 ********************************* SET SCREEN CURSOR
1773 *
1774 ESCCUR TST NEWROW ; ROW SET?
1775 BNE ESCCU1 ; BRANCH IF SO
1776 STA NEWROW ; ELSE SET NEW ROW
1777 RTS ; AND RETURN
1778 *
1779 ESCCU1 CLR ESCFLG
1780 SUBA #$20 ; ADJUST COLUMN ADDRESS
1781 CMPA #LINLEN-1 ; CHECK FOR ACCEPTABLE COLUM
1782 BHI RETESC ; NOT OK, DO NOTHING
1783 *
1784 ESCCU2 LDB NEWROW
1785 CLR NEWROW
1786 SUBB #$20 ; ADJUST TO ROW ADDRESS
1787 CMPB #NUMLIN-1 ; CHECK FOR ACCEPTABLE ROW
1788 BHI RETESC ; ELSE RETURN DOING NOTHING
1789 BRA NEWCUR ; GO SET NEW CURSOR IF SO
1790 *
1791 *************************** DELETE LINE FROM SCREEN
1792 *
1793 ESCDLL BSR CRETN ; GO COL. ZERO
1794 LDB ROWADX
1795 CMPB #NUMLIN-1
1796 BEQ SCROL3
1797 BRA SCROL1 ; AND DELETE THIS LINE
1798 *
1799 *************************** INSERT LINE INTO SCREEN
1800 *
1801 ESCINL BSR CRETN ; GO TO COL. ZERO
1802 LDB ROWADX
1803 CMPB #NUMLIN-1
1804 BEQ ESCCLL
1805 *
1806 ** SCROLL SCREEN DOWN FROM CURSOR
1807 *
1808 LDX #SCREEN+SCNLEN-LINLEN
1809 ESCIN0 LDA ,-X
1810 STA LINLEN,X
1811 LDA SCNLEN,X
1812 STA SCNLEN+LINLEN,X
1813 CMPX CURSOR
1814 BNE ESCIN0
1815 *
1816 ****************** CLEAR FROM CURSOR TO END OF LINE
1817 *
1818 ESCCLL LDA COLADX ; GET CURRENT COLUMN
1819 LDX CURSOR ; GET CURSOR
1820 LDB #$20 ; AND CLEAR CHAR
1821 ESCLL1 STB SCNLEN,X ; CLEAR ATTRIBUTE
1822 STB ,X+ ; CLEAR TEXT
1823 INCA
1824 CMPA #LINLEN ; UNTIL END OF LINE
1825 BNE ESCLL1
1826 CLR ESCFLG
1827 RTS
1828 *
1829 *********************************** CARRIAGE RETURN
1830 *
1831 CRETN CLRA ; SET COLUMN ZERO
1832 POSCOL LDB ROWADX ; GET CURRENT ROW
1833 *
1834 *********** GENERATE NEW CURSOR POSITION AND RETURN
1835 *
1836 NEWCUR STD COLADX ; SAVE NEW ROW AND COLUMN
1837 LDA #LINLEN ; ELSE ADD A LINE
1838 MUL ; LINLEN * ROWADX
1839 ADDB COLADX
1840 ADCA #0
1841 ADDD #SCREEN ; ADD SCREEN BASE.
1842 STD CURSOR ; SAVE NEW CURSOR
1843 TFR D,X ; GET CURSOR IN X
1844 RTS ; AND RETURN
1845 *
1846 ********************* UPDATE CURRENT COLUMN AND ROW
1847 *
1848 NEWCOL LDD COLADX ; GET ROW AND COLUMN
1849 INCA ; BUMP COLUMN
1850 CMPA #LINLEN ; ROLL?
1851 BNE NEWCUR ; BRANCH IF NOT
1852 CLRA ; ELSE RESET TO ZERO
1853 INCB ; AND BUMP ROW
1854 CMPB #NUMLIN
1855 BNE NEWCUR
1856 DECB ; BOTTOM ROW
1857 BSR NEWCUR
1858 *
1859 ********************************* SCROLL THE SCREEN
1860 *
1861 SCROLL LDX #SCREEN ; POINT TO SCREEN
1862 SCROL1 LDA SCNLEN+LINLEN,X
1863 STA SCNLEN,X
1864 LDA LINLEN,X ; MOVE TWO BYTES
1865 STA ,X+ ; UP ONE LINE
1866 CMPX #SCREEN+SCNLEN-LINLEN
1867 BNE SCROL1 ; LOOP UNTIL DONE
1868 BRA SCROL3
1869 *
1870 **************** CLEAR FROM CURSOR TO END OF SCREEN
1871 *
1872 ESCCLS LDX CURSOR ; GET CURSOR
1873 SCROL3 LDA #$20 ; GET A SPACE
1874 SCROL2 STA SCNLEN,X ; CLEAR ATTRIBUTES
1875 STA ,X+ ; AND TEXT
1876 CMPX #SCREEN+SCNLEN
1877 BNE SCROL2 ; UNTIL DONE
1878 CLR ESCFLG
1879 RTS
1880 ENDIF DG640OPT
1880 ENDIF DG640OPT
1881 *
1882 IFD PRTOPT
1883 *************************************
1884 *
1885 ** PRINTER DRIVER ROUTINES
1886 *
1887 *************************************
1888 *
1889 ** PINIZ - INITIATE PRINTER PORT
1890 *
1891 PINIZ PSHS B
1892 LDD #DIRMSK*256+$04 ; ACCA=DIRMSK ACCB=$04
1893 STD PADATA ; SET DDR AND SELECT DATA
1894 *
1895 ** RESET PRINTER
1896 *
1897 LDB #PRESET
1898 STB PADATA
1899 RESTLP INCB ; DELAY FOR RESET
1900 BNE RESTLP
1901 STA PADATA ; ACCA=DIRMSK
1902 *
1903 ** INITALIZE PORT B (DATA PORT)
1904 *
1905 LDA #$2A
1906 STA PBCTRL
1907 LDD #$FF2E ; ACCA=$FF ACCB =%00101110
1908 STD PBDATA ; PBDREG PBCTRL
1909 *
1910 ** SELECT 66 LINES/PAGE
1911 *
1912 LDA #$1B
1913 BSR POUTCH
1914 LDA #'C
1915 BSR POUTCH
1916 LDA #66
1917 PULS B
1918 *************************************
1919 *
1920 ** OUTPUT A CHARACTER TO THE PRINTER
1921 *
1922 *************************************
1923 POUTCH PSHS B
1924 LDB PBDATA ; CLEAR INTERRUPT BIT
1925 *
1926 ** WAIT TILL NOT BUSY
1927 *
1928 BUSYLP LDB PADATA
1929 BITB #PERROR
1930 BEQ PEXIT
1931 TSTB
1932 BMI BUSYLP
1933 *
1934 ** NOW OUTPUT CHARACTER
1935 *
1936 STA PBDATA
1937 PEXIT PULS B,PC
1938 *************************************
1939 *
1940 ** PCHK TEST IFD PRINTER READY
1941 *
1942 *************************************
1943 PCHK TST PBCTRL ; TEST STATE OF CRB7
1944 RTS ; SET ON ACKNOWLEDGE
1945 ENDIF PRTOPT
1945 ENDIF PRTOPT
1946 *************************************
1947 *
1948 * MONITOR KEYBOARD COMMAND JUMP TABLE
1949 *
1950 *************************************
1951 *
1952 FE29 JMPTAB EQU *
1953 FE29 01 FCB 1 " ^A "
1954 FE2A FB 74 FDB ALTRA
1955 FE2C 02 FCB 2 " ^B "
1956 FE2D FB 69 FDB ALTRB
1957 FE2F 03 FCB 3 " ^C "
1958 FE30 FB 7F FDB ALTRCC
1959 FE32 04 FCB 4 " ^D "
1960 FE33 FB 5E FDB ALTRDP
1961 FE35 10 FCB $10 " ^P "
1962 FE36 FB 31 FDB ALTRPC
1963 FE38 15 FCB $15 " ^U "
1964 FE39 FB 3D FDB ALTRU
1965 FE3B 18 FCB $18 " ^X "
1966 FE3C FB 53 FDB ALTRX
1967 FE3E 19 FCB $19 " ^Y "
1968 FE3F FB 48 FDB ALTRY
1969 *
1970 FE41 42 FCC 'B'
1971 FE42 F9 5C FDB BRKPNT
1972 FE44 45 FCC 'E'
1973 FE45 F8 FD FDB MEMDUMP
1974 FE47 47 FCC 'G'
1975 FE48 F8 A5 FDB GO
1976 FE4A 4C FCC 'L'
1977 FE4B FA 5E FDB LOAD
1978 FE4D 50 FCC 'P'
1979 FE4E FA BC FDB PUNCH
1980 FE50 4D FCC 'M'
1981 FE51 F8 A8 FDB MEMCHG
1982 FE53 52 FCC 'R'
1983 FE54 FB ED FDB REGSTR
1984 FE56 53 FCC 'S'
1985 FE57 F8 F1 FDB DISSTK
1986 FE59 58 FCC 'X'
1987 FE5A F9 88 FDB XBKPNT
1988 IFD MFDCOPT
1989 FCC 'D' ; *** SWTPC USES 'U' FOR MINIBOOT
1990 FDB MINBOOT
1991 ENDIF MFDCOPT
1991 ENDIF MFDCOPT
1992 IFD CF8OPT
1993 FE5C 44 FCC 'D' ; *** FPGA 8 BIT USES 'D' FOR CFBOOT
1994 FE5D F9 D5 FDB CFBOOT
1995 ENDIF CF8OPT
1996 IFD IDEOPT
1997 FCC 'D' ; *** XESS FPGA 16 BIT IDE USES 'D' FOR IDEBOOT
1998 FDB IDEBOOT
1999 ENDIF IDEOPT
1999 ENDIF IDEOPT
2000 IFD DMAFOPT
2001 FCC 'U' ; *** SWTPC USES 'D' FOR DMAF2 BOOT
2002 FDB DBOOT
2003 ENDIF DMAFOPT
2003 ENDIF DMAFOPT
2004 IFD EXTOPT
2005 FE5F 55 FCC 'U' ; *** IF FPGA, 'U' IS FOR USER
2006 FE60 FC 92 FDB USRCMD
2007 ENDIF EXTOPT
2008 IFD RTCOPT
2009 FCC 'T'
2010 FDB TIMSET
2011 ENDIF RTCOPT
2011 ENDIF RTCOPT
2012 IFD TRAOPT
2013 FCC "T"
2014 FDB TRACE
2015 ENDIF TRAOPT
2015 ENDIF TRAOPT
2016 *
2017 FE62 TABEND EQU *
2018 *
2019 * ** 6809 VECTOR ADDRESSES **
2020 *
2021 * FOLLOWING ARE THE ADDRESSES OF THE VECTOR ROUTINES
2022 * FOR THE 6809 PROCESSOR. DURING INITIALIZATION THEY
2023 * ARE RELOCATED TO RAM FROM $DFC0 TO $DFCF. THEY ARE
2024 * RELOCATED TO RAM SO THAT THE USER MAY REVECTOR TO
2025 * HIS OWN ROUTINES IF HE SO DESIRES.
2026 *
2027 *
2028 FE62 F9 94 RAMVEC FDB SWIE ; USER-V
2029 FE64 F8 A7 FDB RTI ; SWI3-V
2030 FE66 F8 A7 FDB RTI ; SWI2-V
2031 FE68 F8 A7 FDB RTI ; FIRQ-V
2032 FE6A F8 A7 FDB RTI ; IRQ-V
2033 FE6C F9 94 FDB SWIE ; SWI-V
2034 FE6E FF FF FDB $FFFF ; SVC-VO
2035 FE70 FF FF FDB $FFFF ; SVC-VL
2036 *
2037 * PRINTABLE MESSAGE STRINGS
2038 *
2039 FE72 0D 0A 00 00 00 MSG1 FCB $D,$A,$0,$0,$0 * 0, CR/LF, 0
2040 FE77 53 59 53 30 39 42 FCC 'SYS09BUG 1.7 FOR '
55 47 20 31 2E 37
20 46 4F 52 20
2041 IFD SWTOPT
2042 FCC 'SWTPC'
2043 ENDIF SWTOPT
2043 ENDIF SWTOPT
2044 IFD ADSOPT
2045 FCC 'ADS6809'
2046 ENDIF ADSOPT
2046 ENDIF ADSOPT
2047 IFD B3SOPT
2048 FCC 'B3-S2+'
2049 ENDIF B3SOPT
2049 ENDIF B3SOPT
2050 IFD B5XOPT
2051 FCC 'B5-X300'
2052 ENDIF B5XOPT
2052 ENDIF B5XOPT
2053 IFD S3SOPT
2054 FCC 'S3STARTER'
2055 ENDIF S3SOPT
2055 ENDIF S3SOPT
2056 IFD S3EOPT
2057 FCC 'S3E'
2058 ENDIF S3EOPT
2058 ENDIF S3EOPT
2059 IFD XESOPT
2060 FCC 'XESS'
2061 ENDIF XESOPT
2061 ENDIF XESOPT
2062 IFD DE270OPT
2063 FE88 44 45 32 2D 37 30 FCC 'DE2-70'
2064 ENDIF DE270OPT
2065 FE8E 20 2D 20 FCC ' - '
2066 FE91 04 FCB 4
2067 FE92 4B 0D 0A 00 00 00 MSG2 FCB 'K,$0D,$0A,$00,$00,$00,$04 ; K,<CR>,<LF>,3 NULS,<EOT>
04
2068 FE99 3E MSG3 FCC '>'
2069 FE9A 04 FCB 4
2070 FE9B 57 48 41 54 3F MSG4 FCC 'WHAT?'
2071 FEA0 04 FCB 4
2072 FEA1 20 2D 20 MSG5 FCC ' - '
2073 FEA4 04 FCB 4'
2074 FEA5 20 20 53 50 3D MSG10 FCC ' SP='
2075 FEAA 04 FCB 4
2076 FEAB 20 20 50 43 3D MSG11 FCC ' PC='
2077 FEB0 04 FCB 4
2078 FEB1 20 20 55 53 3D MSG12 FCC ' US='
2079 FEB6 04 FCB 4
2080 FEB7 20 20 49 59 3D MSG13 FCC ' IY='
2081 FEBC 04 FCB 4
2082 FEBD 20 20 49 58 3D MSG14 FCC ' IX='
2083 FEC2 04 FCB 4
2084 FEC3 20 20 44 50 3D MSG15 FCC ' DP='
2085 FEC8 04 FCB 4
2086 FEC9 20 20 41 3D MSG16 FCC ' A='
2087 FECD 04 FCB 4
2088 FECE 20 20 42 3D MSG17 FCC ' B='
2089 FED2 04 FCB 4
2090 FED3 20 20 43 43 3A 20 MSG18 FCC ' CC: '
2091 FED9 04 FCB 4
2092 FEDA 45 46 48 49 4E 5A MSG19 FCC 'EFHINZVC'
56 43
2093 FEE2 53 31 MSG20 FCC 'S1'
2094 FEE4 04 FCB 4
2095 IFD DATOPT
2096 *
2097 * POWER UP/ RESET/ NMI ENTRY POINT
2098 *
2099 FF00 ORG $FF00
2100 *
2101 *
2102 FF00 8E FF F0 START LDX #IC11 ; POINT TO DAT RAM IC11
2103 FF03 86 0F LDA #$0F ; GET COMPLIMENT OF ZERO
2104 *
2105 *
2106 * INITIALIZE DAT RAM --- LOADS $F-$0 IN LOCATIONS $0-$F
2107 * OF DAT RAM, THUS STORING COMPLEMENT OF MSB OF ADDRESS
2108 * IN THE DAT RAM. THE COMPLEMENT IS REQUIRED BECAUSE THE
2109 * OUTPUT OF IC11, A 74S189, IS THE INVERSE OF THE DATA
2110 * STORED IN IT.
2111 *
2112 *
2113 FF05 A7 80 DATLP STA ,X+ ; STORE & POINT TO NEXT RAM LOCATION
2114 FF07 4A DECA ; GET COMP. VALUE FOR NEXT LOCATION
2115 FF08 26 FB BNE DATLP ; ALL 16 LOCATIONS INITIALIZED ?
2116 *
2117 * NOTE: IX NOW CONTAINS $0000, DAT RAM IS NO LONGER
2118 * ADDRESSED, AND LOGICAL ADDRESSES NOW EQUAL
2119 * PHYSICAL ADDRESSES.
2120 *
2121 FF0A 86 F0 LDA #$F0
2122 FF0C A7 84 STA ,X ; STORE $F0 AT $FFFF
2123 FF0E 8E D0 A0 LDX #$D0A0 ; ASSUME RAM TO BE AT $D000-$DFFF
2124 FF11 10 8E 55 AA LDY #TSTPAT ; LOAD TEST DATA PATTERN INTO "Y"
2125 FF15 EE 84 TSTRAM LDU ,X ; SAVE DATA FROM TEST LOCATION
2126 FF17 10 AF 84 STY ,X ; STORE TEST PATTERN AT $D0A0
2127 FF1A 10 AC 84 CMPY ,X ; IS THERE RAM AT THIS LOCATION ?
2128 FF1D 27 0B BEQ CNVADR ; IF MATCH THERE'S RAM, SO SKIP
2129 FF1F 30 89 F0 00 LEAX -$1000,X ; ELSE POINT 4K LOWER
2130 FF23 8C F0 A0 CMPX #$F0A0 ; DECREMENTED PAST ZER0 YET ?
2131 FF26 26 ED BNE TSTRAM ; IF NOT CONTINUE TESTING FOR RAM
2132 FF28 20 D6 BRA START ; ELSE START ALL OVER AGAIN
2133 *
2134 *
2135 * THE FOLLOWING CODE STORES THE COMPLEMENT OF
2136 * THE MS CHARACTER OF THE FOUR CHARACTER HEX
2137 * ADDRESS OF THE FIRST 4K BLOCK OF RAM LOCATED
2138 * BY THE ROUTINE "TSTRAM" INTO THE DAT RAM. IT
2139 * IS STORED IN RAM IN THE LOCATION THAT IS
2140 * ADDRESSED WHEN THE PROCESSOR ADDRESS IS $D---,
2141 * THUS IF THE FIRST 4K BLOCK OF RAM IS FOUND
2142 * WHEN TESTING LOCATION $70A0, MEANING THERE
2143 * IS NO RAM PHYSICALLY ADDRESSED IN THE RANGE
2144 * $8000-$DFFF, THEN THE COMPLEMENT OF THE
2145 * "7" IN THE $70A0 WILL BE STORED IN
2146 * THE DAT RAM. THUS WHEN THE PROCESSOR OUTPUTS
2147 * AN ADDRESS OF $D---, THE DAT RAM WILL RESPOND
2148 * BY RECOMPLEMENTING THE "7" AND OUTPUTTING THE
2149 * 7 ONTO THE A12-A15 ADDRESS LINES. THUS THE
2150 * RAM THAT IS PHYSICALLY ADDRESSED AT $7---
2151 * WILL RESPOND AND APPEAR TO THE 6809 THAT IT
2152 * IS AT $D--- SINCE THAT IS THE ADDRESS THE
2153 * 6809 WILL BE OUTPUTING WHEN THAT 4K BLOCK
2154 * OF RAM RESPONDS.
2155 *
2156 *
2157 FF2A EF 84 CNVADR STU ,X ; RESTORE DATA AT TEST LOCATION
2158 FF2C 1F 10 TFR X,D ; PUT ADDR. OF PRESENT 4K BLOCK IN D
2159 FF2E 43 COMA ; COMPLEMENT MSB OF THAT ADDRESS
2160 FF2F 44 LSRA ; PUT MS 4 BITS OF ADDRESS IN
2161 FF30 44 LSRA ; LOCATION D0-D3 TO ALLOW STORING
2162 FF31 44 LSRA ; IT IN THE DYNAMIC ADDRESS
2163 FF32 44 LSRA ; TRANSLATION RAM.
2164 FF33 B7 FF FD STA $FFFD ; STORE XLATION FACTOR IN DAT "D"
2165 *
2166 FF36 10 CE DF C0 LDS #STACK ; INITIALIZE STACK POINTER
2167 *
2168 *
2169 * THE FOLLOWING CHECKS TO FIND THE REAL PHYSICAL ADDRESSES
2170 * OF ALL 4K BLKS OF RAM IN THE SYSTEM. WHEN EACH 4K BLK
2171 * OF RAM IS LOCATED, THE COMPLEMENT OF IT'S REAL ADDRESS
2172 * IS THEN STORED IN A "LOGICAL" TO "REAL" ADDRESS XLATION
2173 * TABLE THAT IS BUILT FROM $DFD0 TO $DFDF. FOR EXAMPLE IF
2174 * THE SYSTEM HAS RAM THAT IS PHYSICALLY LOCATED (WIRED TO
2175 * RESPOND) AT THE HEX LOCATIONS $0--- THRU $F---....
2176 *
2177 * 0 1 2 3 4 5 6 7 8 9 A B C D E F
2178 * 4K 4K 4K 4K 4K 4K 4K 4K -- 4K 4K 4K 4K -- -- --
2179 *
2180 * ....FOR A TOTAL OF 48K OF RAM, THEN THE TRANSLATION TABLE
2181 * CREATED FROM $DFD0 TO $DFDF WILL CONSIST OF THE FOLLOWING....
2182 *
2183 * 0 1 2 3 4 5 6 7 8 9 A B C D E F
2184 * 0F 0E 0D 0C 0B 0A 09 08 06 05 00 00 04 03 F1 F0
2185 *
2186 *
2187 * HERE WE SEE THE LOGICAL ADDRESSES OF MEMORY FROM $0000-$7FFF
2188 * HAVE NOT BEEN SELECTED FOR RELOCATION SO THAT THEIR PHYSICAL
2189 * ADDRESS WILL = THEIR LOGICAL ADDRESS; HOWEVER, THE 4K BLOCK
2190 * PHYSICALLY AT $9000 WILL HAVE ITS ADDRESS TRANSLATED SO THAT
2191 * IT WILL LOGICALLY RESPOND AT $8000. LIKEWISE $A,$B, AND $C000
2192 * WILL BE TRANSLATED TO RESPOND TO $9000,$C000, AND $D000
2193 * RESPECTIVELY. THE USER SYSTEM WILL LOGICALLY APPEAR TO HAVE
2194 * MEMORY ADDRESSED AS FOLLOWS....
2195 *
2196 * 0 1 2 3 4 5 6 7 8 9 A B C D E F
2197 * 4K 4K 4K 4K 4K 4K 4K 4K 4K 4K -- -- 4K 4K -- --
2198 *
2199 *
2200 FF3A 10 8E DF D0 LDY #LRARAM ; POINT TO LOGICAL/REAL ADDR. TABLE
2201 FF3E A7 2D STA 13,Y ; STORE $D--- XLATION FACTOR AT $DFDD
2202 FF40 6F 2E CLR 14,Y ; CLEAR $DFDE
2203 FF42 86 F0 LDA #$F0 ; DESTINED FOR IC8 AN MEM EXPANSION ?
2204 FF44 A7 2F STA 15,Y ; STORE AT $DFDF
2205 FF46 86 0C LDA #$0C ; PRESET NUMBER OF BYTES TO CLEAR
2206 FF48 6F A6 CLRLRT CLR A,Y ; CLEAR $DFDC THRU $DFD0
2207 FF4A 4A DECA ; SUB. 1 FROM BYTES LEFT TO CLEAR
2208 FF4B 2A FB BPL CLRLRT ; CONTINUE IF NOT DONE CLEARING
2209 FF4D 30 89 F0 00 FNDRAM LEAX -$1000,X ; POINT TO NEXT LOWER 4K OF RAM
2210 FF51 8C F0 A0 CMPX #$F0A0 ; TEST FOR DECREMENT PAST ZERO
2211 FF54 27 22 BEQ FINTAB ; SKIP IF FINISHED
2212 FF56 EE 84 LDU ,X ; SAVE DATA AT CURRENT TEST LOCATION
2213 FF58 10 8E 55 AA LDY #TSTPAT ; LOAD TEST DATA PATTERN INTO Y REG.
2214 FF5C 10 AF 84 STY ,X ; STORE TEST PATT. INTO RAM TEST LOC.
2215 FF5F 10 AC 84 CMPY ,X ; VERIFY RAM AT TEST LOCATION
2216 FF62 26 E9 BNE FNDRAM ; IF NO RAM GO LOOK 4K LOWER
2217 FF64 EF 84 STU ,X ; ELSE RESTORE DATA TO TEST LOCATION
2218 FF66 10 8E DF D0 LDY #LRARAM ; POINT TO LOGICAL/REAL ADDR. TABLE
2219 FF6A 1F 10 TFR X,D ; PUT ADDR. OF PRESENT 4K BLOCK IN D
2220 FF6C 44 LSRA ; PUT MS 4 BITS OF ADDR. IN LOC. D0-D3
2221 FF6D 44 LSRA ; TO ALLOW STORING IT IN THE DAT RAM.
2222 FF6E 44 LSRA
2223 FF6F 44 LSRA
2224 FF70 1F 89 TFR A,B ; SAVE OFFSET INTO LRARAM TABLE
2225 FF72 88 0F EORA #$0F ; INVERT MSB OF ADDR. OF CURRENT 4K BLK
2226 FF74 A7 A5 STA B,Y ; SAVE TRANSLATION FACTOR IN LRARAM TABLE
2227 FF76 20 D5 BRA FNDRAM ; GO TRANSLATE ADDR. OF NEXT 4K BLK
2228 FF78 86 F1 FINTAB LDA #$F1 ; DESTINED FOR IC8 AND MEM EXPANSION ?
2229 FF7A 10 8E DF D0 LDY #LRARAM ; POINT TO LRARAM TABLE
2230 FF7E A7 2E STA 14,Y ; STORE $F1 AT $DFCE
2231 *
2232 * THE FOLLOWING CHECKS TO SEE IF THERE IS A 4K BLK OF
2233 * RAM LOCATED AT $C000-$CFFF. IF NONE THERE IT LOCATES
2234 * THE NEXT LOWER 4K BLK AN XLATES ITS ADDR SO IT
2235 * LOGICALLY RESPONDS TO THE ADDRESS $C---.
2236 *
2237 *
2238 FF80 86 0C LDA #$0C ; PRESET NUMBER HEX "C"
2239 FF82 E6 A6 FINDC LDB A,Y ; GET ENTRY FROM LRARAM TABLE
2240 FF84 26 05 BNE FOUNDC ; BRANCH IF RAM THIS PHYSICAL ADDR.
2241 FF86 4A DECA ; ELSE POINT 4K LOWER
2242 FF87 2A F9 BPL FINDC ; GO TRY AGAIN
2243 FF89 20 14 BRA XFERTF
2244 FF8B 6F A6 FOUNDC CLR A,Y ; CLR XLATION FACTOR OF 4K BLOCK FOUND
2245 FF8D E7 2C STB $0C,Y ; GIVE IT XLATION FACTOR MOVING IT TO $C---
2246 *
2247 * THE FOLLOWING CODE ADJUSTS THE TRANSLATION
2248 * FACTORS SUCH THAT ALL REMAINING RAM WILL
2249 * RESPOND TO A CONTIGUOUS BLOCK OF LOGICAL
2250 * ADDRESSES FROM $0000 AND UP....
2251 *
2252 FF8F 4F CLRA ; START AT ZERO
2253 FF90 1F 21 TFR Y,X ; START POINTER "X" START OF "LRARAM" TABLE.
2254 FF92 E6 A6 COMPRS LDB A,Y ; GET ENTRY FROM "LRARAM" TABLE
2255 FF94 27 04 BEQ PNTNXT ; IF IT'S ZER0 SKIP
2256 FF96 6F A6 CLR A,Y ; ELSE ERASE FROM TABLE
2257 FF98 E7 80 STB ,X+ ; AND ENTER ABOVE LAST ENTRY- BUMP
2258 FF9A 4C PNTNXT INCA ; GET OFFSET TO NEXT ENTRY
2259 FF9B 81 0C CMPA #$0C ; LAST ENTRY YET ?
2260 FF9D 2D F3 BLT COMPRS
2261 *
2262 * THE FOLLOWING CODE TRANSFER THE TRANSLATION
2263 * FACTORS FROM THE LRARAM TABLE TO IC11 ON
2264 * THE MP-09 CPU CARD.
2265 *
2266 FF9F 8E FF F0 XFERTF LDX #IC11 ; POINT TO DAT RAM IC11
2267 FFA2 C6 10 LDB #$10 ; GET NO. OF BYTES TO MOVE
2268 FFA4 A6 A0 FETCH LDA ,Y+ ; GET BYTE AND POINT TO NEXT
2269 FFA6 A7 80 STA ,X+ ; POKE XLATION FACTOR IN IC11
2270 FFA8 5A DECB ; SUB 1 FROM BYTES TO MOVE
2271 FFA9 26 F9 BNE FETCH ; CONTINUE UNTIL 16 MOVED
2272 *
2273 ELSE
2274 LRA RTS
2275 START LDS #STACK ; INITIALIZE STACK POINTER
2276 CLRB
2277 ENDIF DATOPT
2277 ENDIF DATOPT
2278 *
2279 FFAB 53 COMB ; SET "B" NON-ZERO
2280 FFAC F7 DF E2 STB ECHO ; TURN ON ECHO FLAG
2281 FFAF 16 F8 62 LBRA MONITOR ; INITIALIZATION IS COMPLETE
2282 *
2283 ** INTERRUPT JUMP VECTORS
2284 *
2285 FFB2 6E 9F DF C0 V1 JMP [STACK]
2286 FFB6 6E 9F DF C4 V2 JMP [SWI2]
2287 FFBA 6E 9F DF C6 V3 JMP [FIRQ]
2288 FFBE 6E 9F DF C8 V4 JMP [IRQ]
2289 FFC2 6E 9F DF CA V5 JMP [SWI]
2290 *
2291 * SWI3 ENTRY POINT
2292 *
2293 FFC6 1F 43 SWI3E TFR S,U
2294 FFC8 AE 4A LDX 10,U *$FFC8
2295 FFCA E6 80 LDB ,X+
2296 FFCC AF 4A STX 10,U
2297 FFCE 4F CLRA
2298 FFCF 58 ASLB
2299 FFD0 49 ROLA
2300 FFD1 BE DF CC LDX SVCVO
2301 FFD4 8C FF FF CMPX #$FFFF
2302 FFD7 27 0F BEQ SWI3Z
2303 FFD9 30 8B LEAX D,X
2304 FFDB BC DF CE CMPX SVCVL
2305 FFDE 22 08 BHI SWI3Z
2306 FFE0 34 10 PSHS X
2307 FFE2 EC C4 LDD ,U
2308 FFE4 AE 44 LDX 4,U
2309 FFE6 6E F1 JMP [,S++]
2310 FFE8 37 1F SWI3Z PULU A,B,X,CC,DP
2311 FFEA EE 42 LDU 2,U
2312 FFEC 6E 9F DF C2 JMP [SWI3]
2313 *
2314 * 6809 VECTORS
2315 *
2316 FFF0 ORG $FFF0
2317 FFF0 FF B2 FDB V1 USER-V
2318 FFF2 FF C6 FDB SWI3E SWI3-V
2319 FFF4 FF B6 FDB V2 SWI2-V
2320 FFF6 FF BA FDB V3 FIRQ-V
2321 FFF8 FF BE FDB V4 IRQ-V
2322 FFFA FF C2 FDB V5 SWI-V
2323 FFFC FF B2 FDB V1 NMI-V
2324 FFFE FF 00 FDB START RESTART-V
0004 END START
0005 END
Program + Init Data = 2021 bytes
Error count = 0
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