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Assembler release DWC_2.0 version 2.11May 6, 2004 (c) Motorola (free ware)0001 NAM SYS09BUG FOR SWTPc0000 INCLUDE "opt_swt.txt"0001 *0002 ***************************************************0003 * OPTION SWITCHES0004 ***************************************************0005 *0006 *0007 ** THE CONTROL PORT CAN ONLY BE ONE OF THESE0008 ** NOTE THAT THE ACIA WILL ALWAYS BE PRESET0009 ** FOR LOADING AND SAVING S1 RECORDS0010 *0011 *S3EOPT EQU $FF SPARTAN3E STARTER0012 *S3SOPT EQU $FF SPARTAN3 STARTER FPGA VIDEO & PS2 KEYBOARD0013 *B5XOPT EQU $FF B5-X300 FPGA VIDEO & PS2 KEYBOARD0014 *XESOPT EQU $FF XESS XSA-3S100 & XST-3.00015 *ADSOPT EQU $FF ADS6809 & DG640 VIDEO DISPAY0016 00FF SWTOPT EQU $FF SWTP ACIA SERIAL CONTROL PORT0017 *0002 END0000 INCLUDE "sys09equ.txt"0001 *0002 ***************************************************0003 * MEMORY MAP EQUATES *0004 ***************************************************0005 E000 MONIO EQU $E000 I/O SPACE0006 IFD S3EOPT0007 MONRAM EQU $7FC00008 ELSE0009 DFC0 MONRAM EQU $DFC0 STACK SPACE0010 ENDIF S3EOPT0011 F800 MONROM EQU $F800 START OF ROM0012 IFD S3SOPT0013 MONEXT EQU $F000 START OF EXTENDED COMMANDS0014 EXTCMD EQU $00 EXTENDED OFFSET0015 ENDIF S3SOPT0015 ENDIF S3SOPT0016 IFD XESOPT0017 MONEXT EQU $F000 START OF EXTENDED COMMANDS0018 EXTCMD EQU $00 EXTENDED OFFSET0019 ENDIF XESOPT0019 ENDIF XESOPT0020 ***************************************************00210022 IFD S3EOPT0023 *0024 * DIGILENT SPARTAN 3E STARTER0025 *0026 ACIAOPT EQU $FF ACIA AT PORT 00027 PS2OPT EQU $FF PS2 KEYBOARD AT $E0200028 VDUOPT EQU $FF VDU AT $E0300029 TRAOPT EQU $FF PIA TRACE TIMER0030 ENDIF S3EOPT0030 ENDIF S3EOPT0031 *0032 IFD S3SOPT0033 *0034 * DIGILENT SPARTAN 3 STARTER0035 *0036 ACIAOPT EQU $FF ACIA AT PORT 00037 PS2OPT EQU $FF PS2 KEYBOARD AT $E0200038 VDUOPT EQU $FF VDU AT $E0300039 CF8OPT EQU $FF COMPACT FLASH AT $E0400040 DATOPT EQU $FF DYNAMIC ADDRESS TRANSLATION0041 EXTOPT EQU $FF EXTENDED COMMANDS0042 ENDIF S3SOPT0042 ENDIF S3SOPT0043 *0044 IFD B5XOPT0045 *0046 * BURCHED B5-X3000047 *0048 ACIAOPT EQU $FF ACIA AT PORT 00049 PS2OPT EQU $FF PS2 KEYBOARD AT $E0200050 VDUOPT EQU $FF VDU AT $E0300051 CF8OPT EQU $FF COMPACT FLASH AT $E0400052 DATOPT EQU $FF DYNAMIC ADDRESS TRANSLATION0053 ENDIF B5XOPT0053 ENDIF B5XOPT0054 *0055 IFD XESOPT0056 *0057 * XESS XSA-3S1000 & XST-3.00058 *0059 ACIAOPT EQU $FF ACIA AT PORT 00060 PS2OPT EQU $FF PS2 KEYBOARD AT $E0200061 VDUOPT EQU $FF VDU AT $E0300062 IDEOPT EQU $FF XESS IDE AT $E1000063 DATOPT EQU $FF DYNAMIC ADDRESS TRANSLATION0064 EXTOPT EQU $FF EXTENDED COMMANDS0065 ENDIF XESOPT0065 ENDIF XESOPT0066 *0067 IFD ADSOPT0068 *0069 * ACKERMAN DIGITAL ADS68090070 *0071 DG640OPT EQU $FF DG640 VDU AT $E8000072 *RTCOPT EQU $FF REAL TIME CLOCK0073 PRTOPT EQU $FF PRINTER DRIVERS0074 MFDCOPT EQU $FF MINIFLOPPY 5.25" DISK BOOT0075 ENDIF ADSOPT0075 ENDIF ADSOPT0076 *0077 IFD SWTOPT0078 *0079 * SOUTH WEST TECHNICAL PRODUCTS COMPUTER0080 *0081 00FF ACIAOPT EQU $FF ACIA AT PORT 00082 00FF DMAFOPT EQU $FF DMAF2 8" FLOPPY DISK BOOT0083 00FF MFDCOPT EQU $FF MINIFLOPPY 5.25" DISK BOOT0084 00FF DATOPT EQU $FF DYNAMIC ADDRESS TRANSLATION0085 ENDIF0086 *0087 IFD ACIAOPT0088 *0089 ***************************************************0090 * SERIAL PORT *0091 ***************************************************0092 *0093 ** ACIA SITS ON PORT 00094 *0095 E000 ACIAS EQU MONIO+$00 CONTROL PORT0096 *0097 ENDIF ACIAOPT0098 IFD MFDCOPT0099 *0100 ***************************************************0101 * MINIFLOPPY DRIVE *0102 ***************************************************0103 *0104 ** FLOPPY DISK CONTROLLER SITS ON PORT 10105 *0106 E014 DRVFDC EQU MONIO+$140107 E018 CMDFDC EQU MONIO+$180108 E01A SECFDC EQU MONIO+$1A0109 E01B DATFDC EQU MONIO+$1B0110 ENDIF MFDCOPT0111 IFD PS2OPT0112 *0113 ***************************************************0114 * VDU8 PS/2 KEYBOARD PORT *0115 ***************************************************0116 *0117 ** KEYBOARD SITS ON PORT 20118 *0119 PS2KBD EQU MONIO+$20 PS/2 KEYBOARD PORT0120 ENDIF PS2OPT0120 ENDIF PS2OPT0121 IFD VDUOPT0122 *0123 ***************************************************0124 * VDU8 DISPLAY DRIVER EQUATES *0125 ***************************************************0126 *0127 ** VDU8 DISPLAY SITS ON PORT 30128 *0129 VDU EQU MONIO+$300130 VDUCHR EQU 0 CHARACTER REGISTER0131 VDUATT EQU 1 ATTRIBUTE REGISTER0132 VDUCOL EQU 2 CURSOR COLUMN0133 VDUROW EQU 3 CURSOR ROW0134 VDUOFF EQU 4 ROW OFFSET0135 *0136 LINLEN EQU 80 LENGTH OF A LINE0137 NUMLIN EQU 25 NUMBER OF LINES0138 ENDIF VDUOPT0138 ENDIF VDUOPT0139 *0140 IFD CF8OPT0141 *0142 ***************************************************0143 * COMPACT FLASH EQUATES 8 BIT TRANSFER *0144 ***************************************************0145 *0146 ** COMPACT FLASH SITS AT PORT 40147 *0148 CF_BASE EQU MONIO+$400149 CF_DATA EQU CF_BASE+00150 CF_ERROR EQU CF_BASE+1 ; read error0151 CF_FEATURE EQU CF_BASE+1 ; write feature0152 CF_SECCNT EQU CF_BASE+20153 CF_SECNUM EQU CF_BASE+30154 CF_CYLLO EQU CF_BASE+40155 CF_CYLHI EQU CF_BASE+50156 CF_HEAD EQU CF_BASE+60157 CF_STATUS EQU CF_BASE+7 ; read status0158 CF_COMAND EQU CF_BASE+7 ; write command0159 *0160 * Command Equates0161 *0162 CMDREAD EQU $20 ; Read Single sector0163 CMDWRITE EQU $30 ; Write Single sector0164 CMDFEATURE EQU $EF0165 FEAT8BIT EQU $01 ; enable 8 bit transfers0166 HEADLBA EQU $E00167 *0168 * Status bit equates0169 *0170 BUSY EQU $800171 DRDY EQU $400172 DRQ EQU $080173 ERR EQU $010174 *0175 ENDIF CF8OPT0175 ENDIF CF8OPT0176 *0177 IFD IDEOPT0178 *0179 ***************************************************0180 * COMPACT FLASH EQUATES 16 BIT TRANSFER (XESS) *0181 ***************************************************0182 *0183 ** COMPACT FLASH SITS AT PORT 40184 *0185 CF_BASE EQU MONIO+$01000186 CF_DATA EQU CF_BASE+00187 CF_ERROR EQU CF_BASE+2 ; read error0188 CF_FEATURE EQU CF_BASE+2 ; write feature0189 CF_SECCNT EQU CF_BASE+40190 CF_SECNUM EQU CF_BASE+60191 CF_CYLLO EQU CF_BASE+80192 CF_CYLHI EQU CF_BASE+100193 CF_HEAD EQU CF_BASE+120194 CF_STATUS EQU CF_BASE+14 ; read status0195 CF_COMAND EQU CF_BASE+14 ; write command0196 CF_AUX EQU CF_BASE+300197 *0198 * Command Equates0199 *0200 CMDREAD EQU $20 ; Read Single sector0201 CMDWRITE EQU $30 ; Write Single sector0202 AUXRESET EQU $06 ; Reset IDE0203 AUXRSTREL EQU $02 ; Reset release IRQ masked0204 HEADLBA EQU $E00205 *0206 * Status bit equates0207 *0208 BUSY EQU $800209 DRDY EQU $400210 DRQ EQU $080211 ERR EQU $010212 *0213 ENDIF CF8OPT0213 ENDIF CF8OPT0214 *0215 IFD RTCOPT0216 *0217 **************************************************0218 * MM58167A REAL TIME CLOCK MEMORY MAP:0219 **************************************************0220 *0221 ** REAL TIME CLOCK SITS ON PORT 4 AND PORT 50222 *0223 CLOCK EQU MONIO+$40 CLOCK BASE ADDRESS AND REGISTERS0224 *0225 * COUNTER AND COMPARITOR REGISTERS:0226 *0227 * Both the Clock Counter and Clock Comparitor0228 * consist of 8 registers for holding the time.0229 * The register offsets from the Counter and0230 * Comparitor registers are listed above.0231 *0232 COUNTR EQU CLOCK+00233 CMPRAM EQU CLOCK+8 COMPARITOR REGISTERS0234 *0235 * CLOCK REGISTER OFFSETS:0236 * These register offsets are used for the CLOCK0237 * and comparitor ram CMPRAM.0238 *0239 S10000 EQU 0 TEN THOUNSANDTHS OF SECONDS0240 S100 EQU 1 HUNDRETHS AND TENTHS OF SECONDS0241 SECOND EQU 20242 MINUIT EQU 30243 HOUR EQU 40244 WKDAY EQU 50245 MTHDAY EQU 60246 MONTH EQU 70247 *0248 * INTERRUPT OUTPUT REGISTERS:0249 *0250 * An interrupt output may be generated at the0251 * following rates by setting the appropriate bit0252 * in the Interrupt Control Register (CINTCR).0253 * The Interrupt Status Register (CINTSR) must be0254 * read to clear the interrupt and will return0255 * the source of the interrupt.0256 *0257 * 1/Month Bit 70258 * 1/Week Bit 60259 * 1/Day Bit 50260 * 1/Hour Bit 40261 * 1/Minuite Bit 30262 * 1/Second Bit 20263 * 10/Second Bit 10264 * Comparitor Bit 00265 *0266 CINTSR EQU CLOCK+16 INTERRUPT STATUS REGISTER0267 CINTCR EQU CLOCK+17 INTERRUPT CONTROL REGISTER0268 *0269 * COUNTER AND RAM RESETS; GO COMMAND.0270 *0271 * The counter and comparitor may be reset0272 * by writing $FF into CTRRES and CMPRES0273 * respectivly.0274 * A write to the Go command register (GOCMND)0275 * will reset the 1/1000ths, 1/100ths and 1/10ths0276 * of a second counter.0277 *0278 CTRRES EQU CLOCK+18 COUNTER RESET0279 CMPRES EQU CLOCK+19 COMPARITOR RAM RESET0280 GOCMND EQU CLOCK+21 GO COMMAND0281 *0282 * CLOCK STATUS REGISTER.0283 *0284 * The counter takes 61 usec. to rollover for0285 * every 1KHz clock pulse. If the Status bit is0286 * set after reading the counter, the counter0287 * should be re-read to ensure the time is correct.0288 *0289 CLKSTA EQU CLOCK+20 STATUS BIT0290 SBYINT EQU CLOCK+22 STANDBY INTERRUPT0291 TSTMOD EQU CLOCK+31 TEST MODE REGISTER0292 ENDIF RTCOPT0292 ENDIF RTCOPT0293 *0294 IFD TRAOPT0295 *0296 **************************************************0297 * PIA INTERRUPT TIMER0298 **************************************************0299 *0300 ** PIA INTERRUPT TIMER SITS ON PORT 70301 *0302 ** PIA TIMER FOR SINGLE STEP / TRACE0303 *0304 * TADATA = Output = Timer preset register0305 * TACTRL - CA1 = input = rising edge = NMI0306 * - CA2 = Output = Timer Reset (Active High)0307 * TBDATA = Input = Timer read back register0308 * TBCTRL - CB1 = input = rising edge = FIRQ0309 * - CB2 = output = strobe low on write to TBDATA = Timer Preset0310 *0311 * CRA0 = 0 CA1 IRQ DISAB, CRA0 = 1 CA1 IRQ ENAB0312 * CRA1 = 1 CA1 Rising edge IRQ0313 * CRA2 = 0 TADATA = Data Direction, CRA2 = 1 TADATA = I/O Register0314 * CRA3 = 0 CA2 = 0 output, CRA3 = 1 CA2 = 10315 * CRA4 = 1 ] CA2 = Set/Reset output0316 * CRA5 = 1 ]0317 * CRA6 = X CA2 Input Interrupt Flag0318 * CRA7 = X CA1 Interrupt Flag0319 *0320 * CRB0 = 0 CB1 IRQ DISAB, CRB0 = 1 CA1 IRQ ENAB0321 * CRB1 = 1 CB1 Rising edge IRQ0322 * CRB2 = 0 TBDATA = Data Direction, CRB2 = 1 TBDATA = I/O Register0323 * CRB3 = 0 CB2 = 0 output, CRB3 = 1 CB2 = 10324 * CRB4 = 1 ] CB2 = Set/Reset output0325 * CRB5 = 1 ]0326 * CRB6 = X CB2 Input Interrupt Flag0327 * CRB7 = X CB1 Interrupt Flag0328 *0329 * DDRA = 0 TADATA = Input, DDRA = 1 TADATA = Output0330 * DDRB = 0 TBDATA = Input, DDRB = 1 TBDATA = Output0331 *0332 TADATA EQU MONIO+$70 Timer preset port0333 TACTRL EQU MONIO+$710334 TBDATA EQU MONIO+$72 Timer read back port0335 TBCTRL EQU MONIO+$730336 *0337 TRADEL EQU 13 Number of E cycles for RTI (May need to be fudged)0338 *0339 ENDIF TRAOPT0339 ENDIF TRAOPT0340 IFD ADSOPT0341 *0342 ***************************************************0343 * SERIAL PORT FOR DG640 *0344 ***************************************************0345 *0346 ** SET UP FOR ACKERMAN DIGITAL ADS68090347 ** THE ADS6809 S100 BOAD HAS AN ON BOARD ACIA0348 *0349 ACIAS EQU MONIO+$400 CONTROL PORT0350 *0351 ENDIF ADSOPT0351 ENDIF ADSOPT0352 IFD PRTOPT0353 *0354 ***************************************************0355 * PRINTER INTERFACE *0356 ***************************************************0357 *0358 PADATA EQU MONIO+$4040359 PACTRL EQU MONIO+$4050360 PBDATA EQU MONIO+$4060361 PBCTRL EQU MONIO+$4070362 *0363 ** CB1 ACK. I/P0364 ** CB2 STB. O/P0365 ** PB0 - PB7 DATA 1 - 8 O/P0366 ** PORT A BIT ASSIGNMENT0367 *0368 PBUSY EQU $80 I/P0369 PEMPTY EQU $40 I/P0370 SELECT EQU $20 I/P0371 PERROR EQU $10 I/P0372 PRESET EQU %00000100 O/P PA3 = 00373 AUTOFD EQU %00001000 O/P PA2 = 00374 DIRMSK EQU %000011000375 ENDIF PRTOPT0375 ENDIF PRTOPT0376 IFD DG640OPT0377 *0378 ***************************************************0379 * DG640 MEMORY MAPPED DISPLAY DRIVER VARIABLES *0380 ***************************************************0381 *0382 ** VIDEO DISPLAY DEFINITIONS0383 *0384 SCREEN EQU MONIO+$0800 START OF SCREEN MEMORY0385 LINLEN EQU 64 LENGTH OF A LINE0386 NUMLIN EQU 16 NUMBER OF LINES0387 SCNLEN EQU $400 LENGTH OF SCREEN0388 ENDIF DG640OPT0388 ENDIF DG640OPT0389 *0390 IFD DMAFOPT0391 *0392 ***************************************************0393 * DMAF2 8" DRIVE *0394 ***************************************************0395 *0396 F000 ADDREG EQU $F000 ADDRESS REGISTER0397 F002 CNTREG EQU $F002 COUNT REGISTER0398 F010 CCREG EQU $F010 CHANNEL CONTROL REGISTER0399 F014 PRIREG EQU $F014 DMA PRIORITY REGISTER0400 F015 AAAREG EQU $F015 ???0401 F016 BBBREG EQU $F016 ???0402 F020 COMREG EQU $F020 1791 COMMAND REGISTER0403 F022 SECREG EQU $F022 SECTOR REGISTER0404 F024 DRVREG EQU $F024 DRIVE SELECT LATCH0405 F040 CCCREG EQU $F040 ???0406 ENDIF DMAFOPT0407 IFD DATOPT0408 **************************************************0409 * DYNAMIC ADDRESS TRANSLATION REGISTERS *0410 **************************************************0411 *0412 FFF0 IC11 EQU $FFF0 DAT RAM CHIP0413 55AA TSTPAT EQU $55AA TEST PATTERN0414 ENDIF DATOPT0415 *0003 END0000 INCLUDE "sys09bug.txt"0001 * NAM SYS09BUG12 SYSTEM09 MONITOR0002 OPT lsys09bug.txt page 20004 *0005 * MONITOR PROGRAM FOR THE SOUTHWEST TECHNICAL0006 * PRODUCTS MP-09 CPU BOARD AS COMMENTED BY....0007 *0008 * ALLEN CLARK WALLACE WATSON0009 * 2502 REGAL OAKS LANE 4815 EAST 97th AVE.0010 * LUTZ, FLA. 33549 TEMPLE TERRACE, FLA. 336170011 * PH. 813-977-0347 PH. 813-985-13590012 *0013 * MODIFIED TO SBUG09 VER 1.8 BY: RANDY JARRETT0014 * 2561 NANTUCKET DR APT. E0015 * ATLANTA, GA 303450016 * PH. 404-320-10430017 *0018 * MODIFIED TO SYS09BUG VER 1.00019 * FOR: SYSTEM09 FPGA SYSTEM0020 * BY: JOHN KENT0021 * DATE: 21ST NOVEMBER 20060022 * REMOVED: DISK BOOTS0023 * MEMORY TEST0024 * ADDED: ADM3A VDU DRIVER0025 *0026 * MODIFIED TO SYS09BUG VER 1.10027 * FOR: SYSTEM09 FPGA SYSTEM0028 * BY: JOHN KENT0029 * DATE: 7TH JANUARY 20070030 * ADDED: 'U' USER EXTENTION COMMANDS AT $F0000031 * CONDITIONAL ASSEMBLY OF FLOPPY BOOTS0032 * AND REALTIME CLOCK0033 *0034 * MODIFIED TO SYS09BUG VER 1.20035 * FOR: SYSTEM09 FPGA SYSTEM0036 * BY: JOHN KENT0037 * DATE: 21ST MAY 20070038 * ADDED: COMPACT FLASH BOOT TO FPGA VERSION0039 * REMOVED PORT REDIRECTION ON PUNCH & LOAD0040 *0041 * Modified to SYS09BUG VER 1.30042 * FOR: SYSTEM09 FPGA SYSTEM0043 * BY: JOHN KENT0044 * DATE: 8TH JAN 20080045 * ADDED: CONDITIONALS FOR SPARTAN3E STARTER BOARD0046 * WITH ONLY 32K OF RAM0047 *0048 * Modified to SYS09BUG VER 1.40049 * FOR: SYSTEM09 FPGA SYSTEM0050 * BY: JOHN KENT0051 * DATE: 3RD FEB 20080052 * ADDED: CONDITIONALS FOR XESS BOARD WITH IDE0053 * SEPERATE CONDITIONAL FOR S3 STARTER AND B5-X3000054 * 16 BIT IDE DISK BOOT STRAP ROUTINE0055 * CHANGED: SEPARARTED OPTIONS EQUATES AND BODY INTO SEPARATE FILES0056 *0057 * *** COMMANDS ***0058 *0059 * CONTROL A = ALTER THE "A" ACCUMULATOR0060 * CONTROL B = ALTER THE "B" ACCUMULATOR0061 * CONTROL C = ALTER THE CONDITION CODE REGISTER0062 * CONTROL D = ALTER THE DIRECT PAGE REGISTER0063 * CONTROL P = ALTER THE PROGRAM COUNTER0064 * CONTROL U = ALTER USER STACK POINTER0065 * CONTROL X = ALTER "X" INDEX REGISTER0066 * CONTROL Y = ALTER "Y" INDEX REGISTER0067 * B hhhh = SET BREAKPOINT AT LOCATION $hhhh0068 * D = 5.25" MINIFLOPPY BOOT0069 * E ssss-eeee = EXAMINE MEMORY0070 * FROM STARTING ADDRESS ssss0071 * TO ENDING ADDRESS eeee.0072 * G = CONTINUE EXECUTION FROM BREAKPOINT OR SWI0073 * L = LOAD TAPE0074 * M hhhh = EXAMINE AND CHANGE MEMORY LOCATION hhhh0075 * P ssss-eeee = PUNCH TAPE, START ssss TO END eeee ADDR.0076 * R = DISPLAY REGISTER CONTENTS0077 * S = DISPLAY STACK FROM ssss TO $DFC00078 * U = 8" DMAF2 FLOPPY BOOT0079 * U = USER EXTENSION COMMANDS AT $F0000080 * X = REMOVE ALL BREAKPOINTS0081 *0082 *0083 ***************************************************0084 * SYS09BUG VARIABLE SPACE0085 ***************************************************0086 *0087 DFC0 ORG MONRAM0088 DFC0 STACK EQU * TOP OF INTERNAL STACK0089 DFC0 NMI RMB 2 USER NMI VECTOR0090 DFC2 SWI3 RMB 2 SOFTWARE INTERRUPT VECTOR #30091 DFC4 SWI2 RMB 2 SOFTWARE INTERRUPT VECTOR #20092 DFC6 FIRQ RMB 2 FAST INTERRUPT VECTOR0093 DFC8 IRQ RMB 2 INTERRUPT VECTOR0094 DFCA SWI RMB 2 SOFTWARE INTERRUPT VECTOR0095 DFCC SVCVO RMB 2 SUPERVISOR CALL VECTOR ORGIN0096 DFCE SVCVL RMB 2 SUPERVISOR CALL VECTOR LIMIT0097 IFD DATOPT0098 DFD0 LRARAM RMB 16 LRA ADDRESSES0099 ENDIF DATOPT0100 DFE0 CPORT RMB 2 RE-VECTORABLE CONTROL PORT0101 DFE2 ECHO RMB 1 ECHO FLAG0102 DFE3 BPTBL RMB 24 BREAKPOINT TABLE BASE ADDR0103 IFD TRAOPT0104 NMISAV RMB 2 NMI Jump Vector Backup0105 TRACNT RMB 2 Trace Count0106 ENDIF TRAOPT0106 ENDIF TRAOPT0107 IFD VDUOPT0108 *0109 **************************************************0110 * VDU8 DISPLAY DRIVER VARIABLES *0111 **************************************************0112 *0113 **** ALWAYS KEEP COLADX AND ROWADX TOGETHER ******0114 COLADX RMB 1 CURSOR COLUMN0115 ROWADX RMB 1 CURSOR ROW0116 **************************************************0117 *0118 NEWROW RMB 1 NEW ROW TEMP FOR ESCAPE0119 ESCFLG RMB 1 ESCAPE SEQUENCE ACTIVE0120 ENDIF VDUOPT0120 ENDIF VDUOPT0121 IFD DG640OPT0122 *0123 ***************************************************0124 * DG640 MEMORY MAPPED DISPLAY DRIVER VARIABLES *0125 ***************************************************0126 *0127 ***** ALWAYS KEEP THESE TWO BYTES TOGETHER *****0128 COLADX RMB 1 CURSOR COLUMN0129 ROWADX RMB 1 CURSOR ROW0130 *************************************************0131 CURSOR RMB 2 ABSOLUTE SCREEN ADDRESS0132 NEWROW RMB 1 NEW ROW TEMP FOR ESCAPE0133 ESCFLG RMB 1 ESCAPE SEQUENCE ACTIVE0134 ENDIF DG640OPT0134 ENDIF DG640OPT0135 *0136 *0137 ***************************************************0138 * START OF ROM *0139 ***************************************************0140 *0141 F800 ORG MONROM0142 F800 F8 14 FDB MONITOR0143 F802 F8 61 FDB NEXTCMD0144 F804 FD 25 FDB INCH0145 F806 FD 1F FDB INCHE0146 F808 FD 34 FDB INCHEK0147 F80A FD 42 FDB OUTCH0148 F80C FC 17 FDB PDATA0149 F80E FB A6 FDB PCRLF0150 F810 FB A2 FDB PSTRNG0151 F812 FA B6 FDB LRA0152 *0153 IFD ADSOPT0154 FDB PCHK CHECK FOR PRINTER INPUT0155 FDB PINIZ INITIATE PRINTER0156 FDB POUTCH OUTPUT CH. TO PRINTER0157 FDB VINIZ0158 FDB VOUTCH0159 FDB ACINIZ0160 FDB AOUTCH0161 ENDIF ADSOPT0161 ENDIF ADSOPT0162 *0163 * MONITOR0164 *0165 * VECTOR ADDRESS STRING IS.....0166 * $F8A1-$F8A1-$F8A1-$F8A1-$F8A1-$FAB0-$FFFF-$FFFF0167 *0168 F814 8E FD 9F MONITOR LDX #RAMVEC POINT TO VECTOR ADDR. STRING0169 F817 10 8E DF C0 LDY #STACK POINT TO RAM VECTOR LOCATION0170 F81B C6 10 LDB #$10 BYTES TO MOVE = 160171 F81D A6 80 LOOPA LDA ,X+ GET VECTOR BYTE0172 F81F A7 A0 STA ,Y+ PUT VECTORS IN RAM / $DFC0-$DFCF0173 F821 5A DECB SUBTRACT 1 FROM NUMBER OF BYTES TO MOVE0174 F822 26 F9 BNE LOOPA CONTINUE UNTIL ALL VECTORS MOVED0175 *0176 * CONTENTS FROM TO FUNCTION0177 * $F8A1 $FE40 $DFC0 USER-V0178 * $F8A1 $FE42 $DFC2 SWI3-V0179 * $F8A1 $FE44 $DFC4 SWI2-V0180 * $F8A1 $FE46 $DFC6 FIRQ-V0181 * $F8A1 $FE48 $DFC8 IRQ-V0182 * $FAB0 $FE4A $DFCA SWI-V0183 * $FFFF $FE4C $DFCC SVC-VO0184 * $FFFF $FE4E $DFCE SVC-VL0185 *0186 F824 8E E0 00 LDX #ACIAS0187 F827 BF DF E0 STX CPORT STORE ADDR. IN RAM0188 F82A 17 01 5B LBSR XBKPNT CLEAR OUTSTANDING BREAKPOINTS0189 F82D C6 0C LDB #12 CLEAR 12 BYTES ON STACK0190 F82F 6F E2 CLRSTK CLR ,-S0191 F831 5A DECB0192 F832 26 FB BNE CLRSTK0193 F834 30 8C DD LEAX MONITOR,PCR SET PC TO SBUG-E ENTRY0194 F837 AF 6A STX 10,S ON STACK0195 F839 86 D0 LDA #$D0 PRESET CONDITION CODES ON STACK0196 F83B A7 E4 STA ,S0197 F83D 1F 43 TFR S,U0198 F83F 17 05 11 LBSR IOINIZ INITIALIZE CONTROL PORT0199 F842 8E FD AF LDX #MSG1 POINT TO MONITOR MESSAGE0200 F845 17 03 CF LBSR PDATA PRINT MSG0201 *0202 IFD DATOPT0203 F848 8E DF D0 LDX #LRARAM POINT TO LRA RAM STORAGE AREA0204 F84B 4F CLRA START TOTAL AT ZERO0205 F84C C6 0D LDB #13 TOTAL UP ALL ACTIVE RAM MEMORY0206 F84E 6D 85 FNDREL TST B,X TEST FOR RAM AT NEXT LOC.0207 F850 27 03 BEQ RELPAS IF NO RAM GO TO NEXT LOC.0208 F852 8B 04 ADDA #4 ELSE ADD 4K TO TOTAL0209 F854 19 DAA ADJ. TOTAL FOR DECIMAL0210 F855 5A RELPAS DECB SUB. 1 FROM LOCS. TO TEST0211 F856 2A F6 BPL FNDREL PRINT TOTAL OF RAM0212 F858 17 04 94 LBSR OUT2H OUTPUT HEX BYTE AS ASCII0213 F85B 8E FD CF LDX #MSG2 POINT TO MSG 'K' CR/LF + 3 NULS0214 F85E 17 03 B6 LBSR PDATA PRINT MSG0215 ENDIF DATOPT0216 *0217 IFD TRAOPT0218 LBSR TRAINZ0219 ENDIF TRAOPT0219 ENDIF TRAOPT0220 *0221 ***** NEXTCMD *****0222 *0223 F861 8E FD D6 NEXTCMD LDX #MSG3 POINT TO MSG ">"0224 F864 17 03 3B LBSR PSTRNG PRINT MSG0225 F867 17 04 BB LBSR INCH GET ONE CHAR. FROM TERMINAL0226 F86A 84 7F ANDA #$7F STRIP PARITY FROM CHAR.0227 F86C 81 0D CMPA #$0D IS IT CARRIAGE RETURN ?0228 F86E 27 F1 BEQ NEXTCMD IF CR THEN GET ANOTHER CHAR.0229 F870 1F 89 TFR A,B PUT CHAR. IN "B" ACCUM.0230 F872 81 20 CMPA #$20 IS IT CONTROL OR DATA CHAR ?0231 F874 2C 09 BGE PRTCMD IF CMD CHAR IS DATA, PRNT IT0232 F876 86 5E LDA #'^ ELSE CNTRL CHAR CMD SO...0233 F878 17 04 C7 LBSR OUTCH PRINT "^"0234 F87B 1F 98 TFR B,A RECALL CNTRL CMD CHAR0235 F87D 8B 40 ADDA #$40 CONVERT IT TO ASCII LETTER0236 F87F 17 04 C0 PRTCMD LBSR OUTCH PRNT CMD CHAR0237 F882 17 04 BB LBSR OUT1S PRNT SPACE0238 F885 C1 60 CMPB #$600239 F887 2F 02 BLE NXTCH00240 F889 C0 20 SUBB #$200241 *0242 ***** DO TABLE LOOKUP *****0243 * FOR COMMAND FUNCTIONS0244 *0245 F88B 8E FD 66 NXTCH0 LDX #JMPTAB POINT TO JUMP TABLE0246 F88E E1 80 NXTCHR CMPB ,X+ DOES COMMAND MATCH TABLE ENTRY ?0247 F890 27 0F BEQ JMPCMD BRANCH IF MATCH FOUND0248 F892 30 02 LEAX 2,X POINT TO NEXT ENTRY IN TABLE0249 F894 8C FD 9F CMPX #TABEND REACHED END OF TABLE YET ?0250 F897 26 F5 BNE NXTCHR IF NOT END, CHECK NEXT ENTRY0251 F899 8E FD D8 LDX #MSG4 POINT TO MSG "WHAT?"0252 F89C 17 03 78 LBSR PDATA PRINT MSG0253 F89F 20 C0 BRA NEXTCMD IF NO MATCH, PRMPT FOR NEW CMD0254 F8A1 AD 94 JMPCMD JSR [,X] JUMP TO COMMAND ROUTINE0255 F8A3 20 BC BRA NEXTCMD PROMPT FOR NEW COMMAND0256 *0257 * "G" GO OR CONTINUE0258 *0259 F8A5 1F 34 GO TFR U,S0260 F8A7 3B RTI RTI0261 *0262 ***** "M" MEMORY EXAMINE AND CHANGE *****0263 *0264 F8A8 17 03 F3 MEMCHG LBSR IN1ADR INPUT ADDRESS0265 F8AB 29 2D BVS CHRTN IF NOT HEX, RETURN0266 F8AD 1F 12 TFR X,Y SAVE ADDR IN "Y"0267 F8AF 8E FD DE MEMC2 LDX #MSG5 POINT TO MSG " - "0268 F8B2 17 02 ED LBSR PSTRNG PRINT MSG0269 F8B5 1F 21 TFR Y,X FETCH ADDRESS0270 F8B7 17 04 2D LBSR OUT4H PRINT ADDR IN HEX0271 F8BA 17 04 83 LBSR OUT1S OUTPUT SPACE0272 F8BD A6 A4 LDA ,Y GET CONTENTS OF CURRENT ADDR.0273 F8BF 17 04 2D LBSR OUT2H OUTPUT CONTENTS IN ASCII0274 F8C2 17 04 7B LBSR OUT1S OUTPUT SPACE0275 F8C5 17 03 E6 LBSR BYTE LOOP WAITING FOR OPERATOR INPUT0276 F8C8 28 11 BVC CHANGE IF VALID HEX GO CHANGE MEM. LOC.0277 F8CA 81 08 CMPA #8 IS IT A BACKSPACE (CNTRL H)?0278 F8CC 27 E1 BEQ MEMC2 PROMPT OPERATOR AGAIN0279 F8CE 81 18 CMPA #$18 IS IT A CANCEL (CNTRL X)?0280 F8D0 27 DD BEQ MEMC2 PROMPT OPERATOR AGAIN0281 F8D2 81 5E CMPA #'^ IS IT AN UP ARROW?0282 F8D4 27 17 BEQ BACK DISPLAY PREVIOUS BYTE0283 F8D6 81 0D CMPA #$D IS IT A CR?0284 F8D8 26 0F BNE FORWRD DISPLAY NEXT BYTE0285 F8DA 39 CHRTN RTS EXIT ROUTINE0286 *0287 *0288 F8DB A7 A4 CHANGE STA ,Y CHANGE BYTE IN MEMORY0289 F8DD A1 A4 CMPA ,Y DID MEMORY BYTE CHANGE?0290 F8DF 27 08 BEQ FORWRD $F9720291 F8E1 17 04 5C LBSR OUT1S OUTPUT SPACE0292 F8E4 86 3F LDA #'? LOAD QUESTION MARK0293 F8E6 17 04 59 LBSR OUTCH PRINT IT0294 F8E9 31 21 FORWRD LEAY 1,Y POINT TO NEXT HIGHER MEM LOCATION0295 F8EB 20 C2 BRA MEMC2 PRINT LOCATION & CONTENTS0296 F8ED 31 3F BACK LEAY -1,Y POINT TO LAST MEM LOCATION0297 F8EF 20 BE BRA MEMC2 PRINT LOCATION & CONTENTS0298 *0299 * "S" DISPLAY STACK0300 * HEX-ASCII DISPLAY OF CURRENT STACK CONTENTS FROM0301 ** CURRENT STACK POINTER TO INTERNAL STACK LIMIT.0302 *0303 F8F1 17 03 2A DISSTK LBSR PRTSP PRINT CURRENT STACK POINTER0304 F8F4 1F 32 TFR U,Y0305 F8F6 8E DF C0 LDX #STACK LOAD INTERNAL STACK AS UPPER LIMIT0306 F8F9 30 1F LEAX -1,X POINT TO CURRENT STACK0307 F8FB 20 05 BRA MDUMP1 ENTER MEMORY DUMP OF STACK CONTENTS0308 *0309 * "E" DUMP MEMORY FOR EXAMINE IN HEX AND ASCII0310 * AFTER CALLING 'IN2ADR' LOWER ADDRESS IN Y-REG.0311 * UPPER ADDRESS IN X-REG.0312 * IF HEX ADDRESSES ARE INVALID (V)=1.0313 *0314 F8FD 17 03 93 MEMDUMP LBSR IN2ADR INPUT ADDRESS BOUNDRIES0315 F900 29 06 BVS EDPRTN NEW COMMAND IF ILLEGAL HEX0316 F902 34 20 MDUMP1 PSHS Y COMPARE LOWER TO UPPER BOUNDS0317 F904 AC E1 CMPX ,S++ LOWER BOUNDS > UPPER BOUNDS?0318 F906 24 01 BCC AJDUMP IF NOT, DUMP HEX AND ASCII0319 F908 39 EDPRTN RTS ;0320 *0321 * ADJUST LOWER AND UPPER ADDRESS LIMITS0322 * TO EVEN 16 BYTE BOUNDRIES.0323 *0324 * IF LOWER ADDR = $45320325 * LOWER BOUNDS WILL BE ADJUSTED TO = $4530.0326 *0327 * IF UPPER ADDR = $45670328 * UPPER BOUNDS WILL BE ADJUSTED TO = $4570.0329 *0330 * ENTER WITH LOWER ADDRESS IN X-REG.0331 * -UPPER ADDRESS ON TOP OF STACK.0332 *0333 F909 1F 10 AJDUMP TFR X,D GET UPPER ADDR IN D-REG0334 F90B C3 00 10 ADDD #$10 ADD 16 TO UPPER ADDRESS0335 F90E C4 F0 ANDB #$F0 MASK TO EVEN 16 BYTE BOUNDRY0336 F910 34 06 PSHS A,B SAVE ON STACK AS UPPER DUMP LIMIT0337 F912 1F 20 TFR Y,D $F9A5 GET LOWER ADDRESS IN D-REG0338 F914 C4 F0 ANDB #$F0 MASK TO EVEN 16 BYTE BOUNDRY0339 F916 1F 01 TFR D,X PUT IN X-REG AS LOWER DUMP LIMIT0340 F918 AC E4 NXTLIN CMPX ,S COMPARE LOWER TO UPPER LIMIT0341 F91A 27 05 BEQ SKPDMP IF EQUAL SKIP HEX-ASCII DUMP0342 F91C 17 04 15 LBSR INCHEK CHECK FOR INPUT FROM KEYBOARD0343 F91F 27 03 BEQ EDUMP0344 F921 32 62 SKPDMP LEAS 2,S READJUST STACK IF NOT DUMPING0345 F923 39 RTS ;0346 *0347 * PRINT 16 HEX BYTES FOLLOWED BY 16 ASCII CHARACTERS0348 * FOR EACH LINE THROUGHOUT ADDRESS LIMITS.0349 *0350 F924 34 10 EDUMP PSHS X PUSH LOWER ADDR LIMIT ON STACK0351 F926 8E FD DE LDX #MSG5 POINT TO MSG " - "0352 F929 17 02 76 LBSR PSTRNG PRINT MSG0353 F92C AE E4 LDX ,S LOAD LOWER ADDR FROM TOP OF STACK0354 F92E 17 03 B6 LBSR OUT4H PRINT THE ADDRESS0355 F931 17 04 0A LBSR OUT2S 2 SPACES0356 F934 C6 10 LDB #$10 LOAD COUNT OF 16 BYTES TO DUMP0357 F936 A6 80 ELOOP LDA ,X+ GET FROM MEMORY HEX BYTE TO PRINT0358 F938 17 03 B4 LBSR OUT2H OUTPUT HEX BYTE AS ASCII0359 F93B 17 04 02 LBSR OUT1S OUTPUT SPACE0360 F93E 5A DECB $F9D1 DECREMENT BYTE COUNT0361 F93F 26 F5 BNE ELOOP CONTINUE TIL 16 HEX BYTES PRINTED0362 *0363 * PRINT 16 ASCII CHARACTERS0364 * IF NOT PRINTABLE OR NOT VALID0365 * ASCII PRINT A PERIOD (.)0366 F941 17 03 FA LBSR OUT2S 2 SPACES0367 F944 AE E1 LDX ,S++ GET LOW LIMIT FRM STACK - ADJ STACK0368 F946 C6 10 LDB #$10 SET ASCII CHAR TO PRINT = 160369 F948 A6 80 EDPASC LDA ,X+ GET CHARACTER FROM MEMORY0370 F94A 81 20 CMPA #$20 IF LESS THAN $20, NON-PRINTABLE?0371 F94C 25 04 BCS PERIOD IF SO, PRINT PERIOD INSTEAD0372 F94E 81 7E CMPA #$7E IS IT VALID ASCII?0373 F950 23 02 BLS PRASC IF SO PRINT IT0374 F952 86 2E PERIOD LDA #'. LOAD A PERIOD (.)0375 F954 17 03 EB PRASC LBSR OUTCH PRINT ASCII CHARACTER0376 F957 5A DECB DECREMENT COUNT0377 F958 26 EE BNE EDPASC0378 F95A 20 BC BRA NXTLIN0379 *0380 ***** "B" SET BREAKPOINT *****0381 *0382 F95C 17 03 3F BRKPNT LBSR IN1ADR GET BREAKPOINT ADDRESS0383 F95F 29 1E BVS EXITBP EXIT IF INVALID HEX ADDR.0384 F961 8C DF C0 CMPX #STACK ADDRESS ILLEGAL IF >=$DFC00385 F964 24 1A BCC BPERR IF ERROR PRINT (?), EXIT0386 F966 34 10 PSHS X $FA82 PUSH BP ADDRESS ON STACK0387 F968 8E FF FF LDX #$FFFF LOAD DUMMY ADDR TO TEST BP TABLE0388 F96B 8D 55 BSR BPTEST TEST BP TABLE FOR FREE SPACE0389 F96D 35 10 PULS X POP BP ADDRESS FROM STACK0390 F96F 27 0F BEQ BPERR (Z) SET, OUT OF BP TABLE SPACE0391 F971 A6 84 LDA ,X GET DATA AT BREAKPOINT ADDRESS0392 F973 81 3F CMPA #$3F IS IT A SWI?0393 F975 27 09 BEQ BPERR IF SWI ALREADY, INDICATE ERROR0394 F977 A7 A0 STA ,Y+ SAVE DATA BYTE IN BP TABLE0395 F979 AF A4 STX ,Y SAVE BP ADDRESS IN BP TABLE0396 F97B 86 3F LDA #$3F LOAD A SWI ($3F)0397 F97D A7 84 STA ,X SAVE SWI AT BREAKPOINT ADDRESS0398 F97F 39 EXITBP RTS ;0399 *0400 * INDICATE ERROR SETTING BREAKPOINT0401 *0402 F980 17 03 BD BPERR LBSR OUT1S OUTPUT SPACE0403 F983 86 3F LDA #'? LOAD (?), INDICATE BREAKPOINT ERROR0404 F985 16 03 BA LBRA OUTCH PRINT "?"0405 *0406 *** "X" CLEAR OUTSTANDING BREAKPOINTS ***0407 *0408 F988 10 8E DF E3 XBKPNT LDY #BPTBL POINT TO BREAKPOINT TABLE0409 F98C C6 08 LDB #8 LOAD BREAKPOINT COUNTER0410 F98E 8D 18 XBPLP BSR RPLSWI REMOVE USED ENTRY IN BP TABLE0411 F990 5A DECB $FAAC DECREMENT BP COUNTER0412 F991 26 FB BNE XBPLP END OF BREAKPOINT TABLE?0413 F993 39 RTS0414 *0415 ***** SWI ENTRY POINT *****0416 *0417 F994 1F 43 SWIE TFR S,U TRANSFER STACK TO USER POINTER0418 F996 AE 4A LDX 10,U LOAD PC FROM STACK INTO X-REG0419 F998 30 1F LEAX -1,X ADJUST ADDR DOWN 1 BYTE.0420 F99A 8D 26 BSR BPTEST FIND BREAKPOINT IN BP TABLE0421 F99C 27 04 BEQ REGPR IF FOUND, REPLACE DATA AT BP ADDR0422 F99E AF 4A STX 10,U SAVE BREAKPOINT ADDR IN STACK0423 F9A0 8D 06 BSR RPLSWI GO REPLACE SWI WITH ORIGINAL DATA0424 F9A2 17 02 D0 REGPR LBSR REGSTR GO PRINT REGISTERS0425 *0426 IFD TRAOPT0427 LDX #00428 STX TRACNT0429 ENDIF TRAOPT0429 ENDIF TRAOPT0430 *0431 F9A5 16 FE B9 LBRA NEXTCMD GET NEXT COMMAND0432 *0433 F9A8 AE 21 RPLSWI LDX 1,Y LOAD BP ADDRESS FROM BP TABLE0434 F9AA 8C DF C0 CMPX #STACK COMPARE TO TOP AVAILABLE USER MEMORY0435 F9AD 24 0A BCC FFSTBL GO RESET TABLE ENTRY TO $FF'S0436 F9AF A6 84 LDA ,X GET DATA FROM BP ADDRESS0437 F9B1 81 3F CMPA #$3F IS IT SWI?0438 F9B3 26 04 BNE FFSTBL IF NOT, RESET TABLE ENTRY TO $FF'S0439 F9B5 A6 A4 LDA ,Y GET ORIGINAL DATA FROM BP TABLE0440 F9B7 A7 84 STA ,X $FAD3 RESTORE DATA AT BP ADDRESS0441 F9B9 86 FF FFSTBL LDA #$FF LOAD $FF IN A-ACC0442 F9BB A7 A0 STA ,Y+ RESET BREAKPOINT TABLE DATA TO $FF'S0443 F9BD A7 A0 STA ,Y+ RESET BREAKPOINT TABLE ADDR TO $FF'S0444 F9BF A7 A0 STA ,Y+0445 F9C1 39 RTS0446 *0447 ** SEARCH BREAKPOINT TABLE FOR MATCH **0448 *0449 F9C2 10 8E DF E3 BPTEST LDY #BPTBL POINT TO BREAKPOINT TABLE0450 F9C6 C6 08 LDB #8 LOAD BREAKPOINT COUNTER0451 F9C8 A6 A0 FNDBP LDA ,Y+ LOAD DATA BYTE0452 F9CA AC A1 CMPX ,Y++ COMPARE ADDRESS, IS IT SAME?0453 F9CC 27 04 BEQ BPADJ IF SO, ADJUST POINTER FOR TABLE ENTRY0454 F9CE 5A DECB IF NOT, DECREMENT BREAKPOINT COUNTER0455 F9CF 26 F7 BNE FNDBP AND LOOK FOR NEXT POSSIBLE MATCH0456 F9D1 39 RTS ;0457 *0458 *0459 F9D2 31 3D BPADJ LEAY -3,Y MOVE POINTER TO BEGIN OF BP ENTRY0460 F9D4 39 RTS0461 *0462 IFD TRAOPT0463 *0464 ** TRACE from address AAAA BB bytes0465 *0466 TRACE LBSR ALTPC1 SET UP NEW PC0467 BVS TREXIT ADDRESS ERROR, EXIT0468 LBSR OUT1S0469 LBSR IN1ADR Fetch Byte Count0470 BVS TREXIT Byte Count error, EXIT0471 STX TRACNT0472 *0473 LDX NMI Save NMI Vector0474 STX NMISAV0475 LDX #NMIE Set up NMI for Tracing0476 STX NMI0477 LBSR TRAINZ Initialise Hardware0478 BRA TRACEG Start Trace0479 TREXIT RTS0480 *0481 * CRA0 = 0 CA1 IRQ DISAB, CRA0 = 1 CA1 IRQ ENAB0482 * CRA1 = 1 CA1 Rising edge IRQ0483 * CRA2 = 0 TADATA = Data Direction, CRA2 = 1 TADATA = I/O Register0484 * CRA3 = 0 CA2 = 0 output, CRA3 = 1 CA2 = 10485 * CRA4 = 1 ] CA2 = Set/Reset output0486 * CRA5 = 1 ]0487 * CRA6 = X CA2 Input Interrupt Flag0488 * CRA7 = X CA1 Interrupt Flag0489 *0490 * CRB0 = 0 CB1 IRQ DISAB, CRB0 = 1 CA1 IRQ ENAB0491 * CRB1 = 1 CB1 Rising edge IRQ0492 * CRB2 = 0 TBDATA = Data Direction, CRB2 = 1 TBDATA = I/O Register0493 * CRB3 = 0 CB2 = 0 output, CRB3 = 1 CB2 = 10494 * CRB4 = 1 ] CB2 = Set/Reset output0495 * CRB5 = 1 ]0496 * CRB6 = X CB2 Input Interrupt Flag0497 * CRB7 = X CB1 Interrupt Flag0498 *0499 *0500 ** TRACE NMI ENTRY POINT0501 *0502 NMIE TFR S,U0503 LDA #$36 Disable Interrupt, CA2 Low0504 STA TACTRL0505 LDA TADATA Clear Interrupt flag by reading data port0506 *0507 LBSR REGSTR DUMP REGISTERS0508 *0509 LDX 10,U TEST IF NEXT INSTRUCTION IS A SWI0510 LDA ,X0511 CMPA #$3F0512 BEQ TRACEX EXIT ON SWI0513 *0514 LDX TRACNT CHECK IF TRACE COUNT EXPIRED0515 BEQ TRACEX YES, GO BACK TO THE MONITOR0516 LEAX -1,X DECREMENT TRACE COUNT0517 STX TRACNT0518 *0519 ** TRACE GO (RESUME SINGLE STEP)0520 *0521 TRACEG TFR U,S SET UP PROGRAM STACK POINTER0522 LDA #TRADEL SET UP TIMER DELAY (NUMB CYCLES FOR RTI+1)0523 STA TADATA0524 LDA #$36 LOAD STROBE LOW0525 STA TACTRL0526 LDA TADATA CLEAR INTERRUPT0527 LDA #$36 RELEASE RESET0528 STA TBCTRL0529 LDA #$3F RELEASE LOAD, ENABLE CA1 NMI, CA1 RISING EDGE0530 STA TACTRL0531 RTI GO EXECUTE INSTRUCTION0532 *0533 TRACEX LDX NMISAV Restore NMI vector0534 STX NMI0535 LBRA NEXTCMD Jump back to the command loop.0536 *0537 ** TRACE HARDWARE INITIALISATION0538 *0539 TRAINZ LDA #$32 SELECT DDRA, CA2 LOW, NMI DISABLED0540 STA TACTRL0541 LDA #$3A SELECT DDRB, CB2 HIGH, FIRQ DISABLED0542 STA TBCTRL0543 LDA #$FF PORTA = OUTPUT0544 STA TADATA0545 LDA #$00 PORTB = INPUT0546 STA TBDATA0547 LDA #$36 SELECT OUTPUT REGISTER A, CA2 LOW0548 STA TACTRL0549 LDA #$3E SELECT OUTPUT REGISTER B, CB2 HIGH0550 STA TBCTRL0551 RTS0552 *0553 ENDIF TRAOPT0553 ENDIF TRAOPT0554 IFD MFDCOPT0555 *0556 ** "U" MINI DISK BOOT0557 *0558 F9D5 7D E0 18 MINBOOT TST CMDFDC0559 F9D8 7F E0 14 CLR DRVFDC0560 F9DB 8E 00 00 LDX #$00000561 F9DE 30 01 LOOP LEAX $01,X0562 F9E0 8C 00 00 CMPX #$00000563 F9E3 26 F9 BNE LOOP0564 F9E5 86 0F LDA #$0F0565 F9E7 B7 E0 18 STA CMDFDC0566 F9EA 8D 37 BSR DELAY0567 F9EC F6 E0 18 LOOP1 LDB CMDFDC0568 F9EF C5 01 BITB #$010569 F9F1 26 F9 BNE LOOP10570 F9F3 86 01 LDA #$010571 F9F5 B7 E0 1A STA SECFDC0572 F9F8 8D 29 BSR DELAY0573 F9FA 86 8C LDA #$8C0574 F9FC B7 E0 18 STA CMDFDC0575 F9FF 8D 22 BSR DELAY0576 FA01 8E C0 00 LDX #$C0000577 FA04 20 09 BRA LOOP30578 FA06 C5 02 LOOP2 BITB #$020579 FA08 27 05 BEQ LOOP30580 FA0A B6 E0 1B LDA DATFDC0581 FA0D A7 80 STA ,X+0582 FA0F F6 E0 18 LOOP3 LDB CMDFDC0583 FA12 C5 01 BITB #$010584 FA14 26 F0 BNE LOOP20585 FA16 C5 2C BITB #$2C0586 FA18 27 01 BEQ LOOP40587 FA1A 39 RTS0588 *0589 FA1B 8E C0 00 LOOP4 LDX #$C0000590 FA1E AF 4A STX $0A,U0591 FA20 1F 34 TFR U,S0592 FA22 3B RTI0593 *0594 FA23 C6 04 DELAY LDB #$040595 FA25 5A LOOP5 DECB0596 FA26 26 FD BNE LOOP50597 FA28 39 RTS0598 ENDIF MFDCOPT0599 *0600 IFD DMAFOPT0601 *0602 *** "D" DISK BOOT FOR DMAF2 ***0603 *0604 FA29 86 DE DBOOT LDA #$DE0605 FA2B B7 F0 24 STA DRVREG0606 FA2E 86 FF LDA #$FF0607 FA30 B7 F0 14 STA PRIREG $FAF80608 FA33 B7 F0 10 STA CCREG0609 FA36 B7 F0 15 STA AAAREG0610 FA39 B7 F0 16 STA BBBREG0611 FA3C 7D F0 10 TST CCREG0612 FA3F 86 D8 LDA #$D80613 FA41 B7 F0 20 STA COMREG0614 FA44 17 00 96 LBSR DLY0615 FA47 B6 F0 20 DBOOT0 LDA COMREG0616 FA4A 2B FB BMI DBOOT00617 FA4C 86 09 LDA #$090618 FA4E B7 F0 20 STA COMREG0619 FA51 17 00 89 LBSR DLY0620 *0621 FA54 B6 F0 20 DISKWT LDA COMREG FETCH DRIVE STATUS0622 FA57 85 01 BITA #1 TEST BUSY BIT0623 FA59 26 F9 BNE DISKWT LOOP UNTIL NOT BUSY0624 *0625 FA5B 85 10 BITA #$100626 FA5D 26 CA BNE DBOOT0627 *0628 FA5F 8E C0 00 LDX #$C000 LOGICAL ADDR. = $C0000629 FA62 8D 52 BSR LRA GET 20 BIT PHYSICAL ADDR. OF LOG. ADDR.0630 FA64 8A 10 ORA #$100631 FA66 B7 F0 40 STA CCCREG0632 FA69 1F 10 TFR X,D0633 FA6B 43 COMA ;0634 FA6C 53 COMB ;0635 FA6D FD F0 00 STD ADDREG0636 FA70 8E FE FF LDX #$FEFF LOAD DMA BYTE COUNT = $1000637 FA73 BF F0 02 STX CNTREG STORE IN COUNT REGISTER0638 FA76 86 FF LDA #$FF LOAD THE CHANNEL REGISTER0639 FA78 B7 F0 10 STA CCREG0640 FA7B 86 FE LDA #$FE SET CHANNEL 00641 FA7D B7 F0 14 STA PRIREG0642 FA80 86 01 LDA #1 SET SECTOR TO "1"0643 FA82 B7 F0 22 STA SECREG ISSUE COMMAND0644 FA85 86 8C LDA #$8C SET SINGLE SECTOR READ0645 FA87 B7 F0 20 STA COMREG ISSUE COMMAND0646 FA8A 8D 51 BSR DLY0647 *0648 * THE FOLLOWING CODE TESTS THE STATUS OF THE0649 * CHANNEL CONTROL REGISTER. IF "D7" IS NOT0650 * ZERO THEN IT WILL LOOP WAITING FOR "D7"0651 * TO GO TO ZERO. IF AFTER 65,536 TRIES IT0652 * IS STILL A ONE THE BOOT OPERATION WILL0653 * BE STARTED OVER FROM THE BEGINING.0654 *0655 FA8C 5F CLRB ;0656 FA8D 34 04 DBOOT1 PSHS B $FB550657 FA8F 5F CLRB ;0658 FA90 7D F0 10 DBOOT2 TST CCREG0659 FA93 2A 0A BPL DBOOT30660 FA95 5A DECB ;0661 FA96 26 F8 BNE DBOOT20662 FA98 35 04 PULS B0663 FA9A 5A DECB0664 FA9B 26 F0 BNE DBOOT10665 FA9D 20 8A BRA DBOOT0666 FA9F 35 04 DBOOT3 PULS B0667 FAA1 B6 F0 20 LDA COMREG0668 FAA4 85 1C BITA #$1C0669 FAA6 27 01 BEQ DBOOT40670 FAA8 39 RTS ;0671 *0672 *0673 FAA9 C6 DE DBOOT4 LDB #$DE0674 FAAB F7 F0 24 STB DRVREG0675 FAAE 8E C0 00 LDX #$C0000676 FAB1 AF 4A STX 10,U0677 FAB3 1F 34 TFR U,S $FB7B0678 FAB5 3B RTI ;0679 ENDIF DMAFOPT0680 *0681 IFD CF8OPT0682 *0683 * COMPACT FLASH BOOT0684 *0685 CFBOOT BSR WAITRDY0686 LDA #HEADLBA0687 STA CF_HEAD0688 BSR WAITRDY0689 LDA #FEAT8BIT0690 STA CF_FEATURE0691 LDA #CMDFEATURE0692 STA CF_COMAND0693 BSR WAITRDY0694 *0695 * READ SECTORS FROM CF0696 *0697 CFREAD LDA #$010698 STA CF_SECCNT0699 CLRA0700 STA CF_SECNUM0701 STA CF_CYLLO0702 STA CF_CYLHI0703 *0704 LDA #CMDREAD ; IDE READ MULTIPLE0705 STA CF_COMAND0706 BSR WAITRDY0707 LDX #$C0000708 *0709 * READ LOOP0710 *0711 RDLOOP BSR WAITDRQ0712 LDA CF_DATA0713 STA ,X+0714 CMPX #$C2000715 BNE RDLOOP0716 *0717 LDX #$C0000718 STX $0A,U0719 TFR U,S0720 RTI0721 *0722 * WAIT UNTIL READY0723 *0724 WAITRDY LDA CF_STATUS0725 BITA #BUSY0726 BNE WAITRDY0727 LDA CF_STATUS0728 BITA #DRDY0729 BEQ WAITRDY0730 RTS0731 *0732 * WAIT FOR DATA REQUEST0733 *0734 WAITDRQ LDA CF_STATUS0735 BITA #DRQ0736 BEQ WAITDRQ0737 RTS0738 ENDIF CF8OPT0738 ENDIF CF8OPT0739 *0740 IFD IDEOPT0741 *0742 * XESS 16 BIT IDE BOOT0743 *0744 IDEBOOT LDD #AUXRESET0745 STD CF_AUX0746 LDD #AUXRSTREL0747 STD CF_AUX0748 LDD #HEADLBA0749 STD CF_HEAD0750 BSR WAITRDY0751 *0752 * READ SECTORS FROM CF0753 *0754 LDD #$010755 STD CF_SECCNT0756 CLRB0757 STD CF_SECNUM0758 STD CF_CYLLO0759 STD CF_CYLHI0760 *0761 LDB #CMDREAD ; IDE READ MULTIPLE0762 STD CF_COMAND0763 BSR WAITRDY0764 LDX #$C0000765 *0766 * READ LOOP0767 *0768 RDLOOP BSR WAITDRQ0769 LDD CF_DATA0770 STB ,X+0771 CMPX #$C1000772 BNE RDLOOP0773 *0774 LDX #$C0000775 STX $0A,U0776 TFR U,S0777 RTI0778 *0779 * WAIT UNTIL READY0780 *0781 WAITRDY LDD CF_STATUS0782 BITB #BUSY0783 BNE WAITRDY0784 LDD CF_STATUS0785 BITB #DRDY0786 BEQ WAITRDY0787 RTS0788 *0789 * WAIT FOR DATA REQUEST0790 *0791 WAITDRQ LDD CF_STATUS0792 BITB #DRQ0793 BEQ WAITDRQ0794 RTS0795 ENDIF IDEOPT0795 ENDIF IDEOPT0796 *0797 IFD RTCOPT0798 *0799 * CLOCK INTER FACE UTILITY0800 *0801 * TIME <Hours> <Minuits> <Seconds>0802 * If no argument is specified, the current time0803 * will be displayed.0804 *0805 * READ A REGISTER FROM THE COUNTER.0806 * The X Index rgister points to the register0807 * to be read. The Status Register is checked0808 * before and after the register is read before0809 * returning a value in accumulator A0810 *0811 RDCLK TST CLKSTA0812 BNE RDCLK0813 RDCLK1 LDA 0,X0814 TST CLKSTA0815 BNE RDCLK10816 RTS0817 *0818 * MAIN PROGRAM:0819 *0820 TIMSET LDX #COUNTR POINT TO TIMER0821 LBSR BYTE READ HOURS0822 BVS SHOWTM NO ARG, DISP TIME0823 STA HOUR,X0824 LBSR OUT1S0825 LBSR BYTE READ MINUITES0826 BVS SHOWTM0827 STA MINUIT,X0828 LBSR OUT1S0829 LBSR BYTE SECONDS.0830 BVS SHOWTM0831 STA SECOND,X0832 *0833 * DISPLAY CURRENT TIME0834 *0835 SHOWTM LBSR PCRLF0836 LDX #COUNTR+HOUR0837 LDB #30838 SHOWLP BSR RDCLK0839 LBSR OUT2H0840 LDA #':0841 LBSR OUTCH0842 LEAX -1,X0843 DECB0844 BNE SHOWLP0845 RTS0846 *0847 * INITIATE CLOCK.0848 * MASK INTERRUPTS.0849 *0850 CLKINZ CLR CINTCR MASK ALL INTERRUPTS0851 TST CINTSR CLEAR ANY INTERRUPTS0852 RTS0853 ENDIF RTCOPT0853 ENDIF RTCOPT0854 IFD DATOPT0855 *0856 ***** LRA LOAD REAL ADDRESS *****0857 *0858 * THE FOLLOWING CODE LOADS THE 20-BIT0859 * PHYSICAL ADDRESS OF A MEMORY BYTE0860 * INTO THE "A" AND "X" REGISTERS. THIS0861 * ROUTINE IS ENTERED WITH THE LOGICAL0862 * ADDRESS OF A MEMORY BYTE IN THE "IX"0863 * REGISTER. EXIT IS MADE WITH THE HIGH-0864 * ORDER FOUR BITS OF THE 20-BIT PHYSICAL0865 * ADDRESS IN THE "A" REGISTER, AND THE0866 * LOW-ORDER 16-BITS OF THE 20-BIT0867 * PHYSICAL ADDRESS IN THE "IX" REGISTER.0868 * ALL OTHER REGISTERS ARE PRESERVED.0869 * THIS ROUTINE IS REQUIRED SINCE THE0870 * DMAF1 AND DMAF2 DISK CONTROLLERS MUST0871 * PRESENT PHYSICAL ADDRESSES ON THE0872 * SYSTEM BUS.0873 *0874 FAB6 34 36 LRA PSHS A,B,X,Y PUSH REGISTERS ON STACK0875 FAB8 A6 62 LDA 2,S GET MSB LOGICAL ADDR FRM X REG ON STACK0876 FABA 44 LSRA ;0877 FABB 44 LSRA ADJ FOR INDEXED INTO0878 FABC 44 LSRA CORRESPONDING LOCATION0879 FABD 44 LSRA IN LRA TABLE0880 FABE 10 8E DF D0 LDY #LRARAM LOAD LRA TABLE BASE ADDRESS0881 FAC2 E6 A6 LDB A,Y GET PHYSICAL ADDR. DATA FROM LRA TABLE0882 FAC4 54 LSRB ADJ. REAL ADDR. TO REFLECT EXTENDED0883 FAC5 54 LSRB PHYSICAL ADDRESS.0884 FAC6 54 LSRB EXTENDED MS 4-BITS ARE RETURNED0885 FAC7 54 LSRB IN THE "A" ACCUMULATOR0886 FAC8 E7 E4 STB ,S MS 4 BITS IN A ACCUM. STORED ON STACK0887 FACA E6 A6 LDB A,Y LOAD REAL ADDRESS DATA FROM LRA TABLE0888 FACC 53 COMB COMP TO ADJ FOR PHYSICAL ADDR. IN X REG0889 FACD 58 ASLB ADJ DATA FOR RELOCATION IN X REG0890 FACE 58 ASLB ;0891 FACF 58 ASLB $FB970892 FAD0 58 ASLB ;0893 FAD1 A6 62 LDA 2,S GET MS BYTE OF LOGICAL ADDR.0894 FAD3 84 0F ANDA #$0F MASK MS NIBBLE OF LOGICAL ADDRESS0895 FAD5 A7 62 STA 2,S SAVE IT IN X REG ON STACK0896 FAD7 EA 62 ORB 2,S SET MS BYTE IN X REG TO ADJ PHY ADDR.0897 *0898 * PLUS LS NIBBLE OF LOGICAL ADDRESS0899 FAD9 E7 62 STB 2,S SAVE AS LS 16 BITS OF PHY ADDR IN X REG0900 * ON STACK0901 FADB 35 B6 PULS A,B,X,Y,PC POP REGS. FROM STACK0902 ENDIF DATOPT0903 *0904 * DELAY LOOP0905 *0906 FADD 34 04 DLY PSHS B SAVE CONTENTS OF "B"0907 FADF C6 20 LDB #$20 GET LOOP DELAY VALUE0908 FAE1 5A SUB1 DECB SUBTRACT ONE FROM VALUE0909 FAE2 26 FD BNE SUB1 LOOP UNTIL ZERO0910 FAE4 35 84 PULS B,PC RESTORE CONTENTS OF "B"0911 * RTS ;0912 *0913 ***** "L" LOAD MIKBUG TAPE *****0914 *0915 FAE6 BD FD 53 LOAD JSR ACINIZ0916 FAE9 86 11 LDA #$11 LOAD 'DC1' CASS. READ ON CODE0917 FAEB 17 02 54 LBSR OUTCH OUTPUT IT TO TERMINAL PORT0918 FAEE 7F DF E2 CLR ECHO TURN OFF ECHO FLAG0919 FAF1 17 02 26 LOAD1 LBSR ECHON INPUT 8 BIT BYTE WITH NO ECHO0920 FAF4 81 53 LOAD2 CMPA #'S IS IT AN "S", START CHARACTER ?0921 FAF6 26 F9 BNE LOAD1 IF NOT, DISCARD AND GET NEXT CHAR.0922 FAF8 17 02 1F LBSR ECHON0923 FAFB 81 39 CMPA #'9 IS IT A "9" , END OF FILE CHAR ?0924 FAFD 27 3D BEQ LOAD21 IF SO, EXIT LOAD0925 FAFF 81 31 CMPA #'1 IS IT A "1" , FILE LOAD CHAR ?0926 FB01 26 F1 BNE LOAD2 IF NOT, LOOK FOR START CHAR.0927 FB03 17 01 A8 LBSR BYTE INPUT BYTE COUNT0928 FB06 34 02 PSHS A PUSH COUNT ON STACK0929 FB08 29 26 BVS LODERR (V) C-CODE SET, ILLEGAL HEX0930 FB0A 17 01 91 LBSR IN1ADR INPUT LOAD ADDRESS0931 FB0D 29 21 BVS LODERR (V) C-CODE SET, ADDR NOT HEX0932 FB0F 34 10 PSHS X PUSH ADDR ON STACK0933 FB11 E6 E0 LDB ,S+ LOAD MSB OF ADDR AS CHECKSUM BYTE0934 FB13 EB E0 ADDB ,S+ ADD LSB OF ADDR TO CHECKSUM0935 FB15 EB E4 ADDB ,S ADD BYTE COUNT BYTE TO CHECKSUM0936 FB17 6A E4 DEC ,S $FC37 DECREMENT BYTE COUNT 2 TO BYPASS0937 FB19 6A E4 DEC ,S ADDRESS BYTES.0938 FB1B 34 04 LOAD10 PSHS B PUSH CHECKSUM ON STACK0939 FB1D 17 01 8E LBSR BYTE INPUT DATA BYTE (2 HEX CHAR)0940 FB20 35 04 PULS B POP CHECKSUM FROM STACK0941 FB22 29 0C BVS LODERR (V) SET, DATA BYTE NOT HEX0942 FB24 34 02 PSHS A PUSH DATA BYTE ON STACK0943 FB26 EB E0 ADDB ,S+ ADD DATA TO CHECKSUM, AUTO INC STACK0944 FB28 6A E4 DEC ,S DECREMENT BYTE COUNT 10945 FB2A 27 05 BEQ LOAD16 IF BYTE COUNT ZERO, TEST CHECKSUM0946 FB2C A7 80 STA ,X+ SAVE DATA BYTE IN MEMORY0947 FB2E 20 EB BRA LOAD10 GET NEXT DATA BYTE0948 FB30 5F LODERR CLRB ;ERROR CONDITION, ZERO CHECKSUM ;0949 FB31 35 02 LOAD16 PULS A ADJUST STACK (REMOVE BYTE COUNT)0950 FB33 C1 FF CMPB #$FF CHECKSUM OK?0951 FB35 27 BA BEQ LOAD1 IF SO, LOAD NEXT LINE0952 FB37 86 3F LDA #'? LOAD (?) ERROR INDICATOR0953 FB39 17 02 06 LBSR OUTCH OUTPUT IT TO TERMINAL0954 FB3C 73 DF E2 LOAD21 COM ECHO TURN ECHO ON0955 FB3F 86 13 LDA #$13 $FC5F LOAD 'DC3' CASS. READ OFF CODE0956 FB41 16 01 FE LBRA OUTCH OUTPUT IT0957 *0958 ***** "P" PUNCH MIKBUG TAPE *****0959 *0960 FB44 6F E2 PUNCH CLR ,-S CLEAR RESERVED BYTE ON STACK0961 FB46 17 01 4A LBSR IN2ADR GET BEGIN AND END ADDRESS0962 FB49 34 30 PSHS X,Y SAVE ADDRESSES ON STACK0963 FB4B 29 4D BVS PUNEXT (V) C-CODE SET, EXIT PUNCH0964 FB4D AC 62 CMPX 2,S COMPARE BEGIN TO END ADDR0965 FB4F 25 49 BCS PUNEXT IF BEGIN GREATER THAN END, EXIT PUNCH0966 FB51 30 01 LEAX 1,X INCREMENT END ADDRESS0967 FB53 AF E4 STX ,S STORE END ADDR ON STACK0968 FB55 BD FD 53 JSR ACINIZ0969 FB58 86 12 LDA #$12 LOAD 'DC2' PUNCH ON CODE0970 FB5A 17 01 E5 LBSR OUTCH OUTPUT IT TO TERMINAL0971 FB5D EC E4 PUNCH2 LDD ,S LOAD END ADDR IN D-ACC0972 FB5F A3 62 SUBD 2,S SUBTRACT BEGIN FROM END0973 FB61 27 06 BEQ PUNCH3 SAME, PUNCH 32 BYTES DEFAULT0974 FB63 10 83 00 20 CMPD #$20 LESS THAN 32 BYTES?0975 FB67 23 02 BLS PUNCH4 PUNCH THAT MANY BYTES0976 FB69 C6 20 PUNCH3 LDB #$20 LOAD BYTE COUNT OF 32.0977 FB6B E7 64 PUNCH4 STB 4,S STORE ON STACK AS BYTE COUNT0978 FB6D 8E FE 1F LDX #MSG20 POINT TO MSG "S1"0979 FB70 17 00 2F LBSR PSTRNG PRINT MSG0980 FB73 CB 03 ADDB #3 ADD 3 BYTES TO BYTE COUNT0981 FB75 1F 98 TFR B,A GET BYTE COUNT IN A-ACC TO PUNCH0982 FB77 17 01 75 LBSR OUT2H OUTPUT BYTE COUNT0983 FB7A AE 62 LDX 2,S LOAD BEGIN ADDRESS0984 FB7C 17 01 68 LBSR OUT4H PUNCH ADDRESS0985 FB7F EB 62 ADDB 2,S ADD ADDR MSB TO CHECKSUM0986 FB81 EB 63 ADDB 3,S ADD ADDR LSB TO CHECKSUM0987 FB83 EB 84 PUNCHL ADDB ,X ADD DATA BYTE TO CHECKSUM0988 FB85 A6 80 LDA ,X+ LOAD DATA BYTE TO PUNCH0989 FB87 17 01 65 LBSR OUT2H OUTPUT DATA BYTE0990 FB8A 6A 64 DEC 4,S DECREMENT BYTE COUNT0991 FB8C 26 F5 BNE PUNCHL NOT DONE, PUNCH NEXT BYTE0992 FB8E 53 COMB 1's COMPLIMENT CHECKSUM BYTE0993 FB8F 1F 98 TFR B,A GET IT IN A-ACC TO PUNCH0994 FB91 17 01 5B LBSR OUT2H OUTPUT CHECKSUM BYTE0995 FB94 AF 62 STX 2,S SAVE X-REG IN STACK AS NEW PUNCH ADDR0996 FB96 AC E4 CMPX ,S COMPARE IT TO END ADDR0997 FB98 26 C3 BNE PUNCH2 $FCB5 PUNCH NOT DONE, CONT.0998 FB9A 86 14 PUNEXT LDA #$14 LOAD 'DC4' PUNCH OFF CODE0999 FB9C 17 01 A3 LBSR OUTCH OUTPUT IT1000 FB9F 32 65 LEAS 5,S READJUST STACK POINTER1001 FBA1 39 RTS ;1002 *1003 * PRINT STRING PRECEEDED BY A CR & LF.1004 *1005 FBA2 8D 02 PSTRNG BSR PCRLF PRINT CR/LF1006 FBA4 20 71 BRA PDATA PRINT STRING POINTED TO BY IX1007 *1008 * PCRLF1009 *1010 FBA6 34 10 PCRLF PSHS X SAVE IX1011 FBA8 8E FD D0 LDX #MSG2+1 POINT TO MSG CR/LF + 3 NULS1012 FBAB 17 00 69 LBSR PDATA PRINT MSG1013 FBAE 35 90 PULS X,PC RESTORE IX & RETURN1014 *1015 * LONG BRANCHES TO COMMON ROUTINES1016 *1017 FBB0 16 01 8D JOUT1S LBRA OUT1S1018 FBB3 16 00 F8 JBYTE LBRA BYTE1019 FBB6 16 00 E5 JIN1ADR LBRA IN1ADR1020 *1021 * ALTER "PC" PROGRAM COUNTER1022 *1023 FBB9 17 00 91 ALTRPC LBSR PRTPC $FCF5 PRINT MSG " PC = "1024 FBBC 8D F2 ALTPC1 BSR JOUT1S OUTPUT SPACE1025 FBBE 8D F6 BSR JIN1ADR GET NEW CONTENTS FOR "PC"1026 FBC0 29 02 BVS ALTPCD EXIT IF INVALID HEX1027 FBC2 AF 4A STX 10,U POKE IN NEW CONTENTS1028 FBC4 39 ALTPCD RTS ;1029 *1030 * ALTER "U" USER STACK POINTER1031 *1032 FBC5 8D 61 ALTRU BSR PRTUS $FCCA PRINT MSG " US = "1033 FBC7 8D E7 BSR JOUT1S OUTPUT SPACE1034 FBC9 8D EB BSR JIN1ADR1035 FBCB 29 02 BVS ALTUD1036 FBCD AF 48 STX 8,U1037 FBCF 39 ALTUD RTS ;1038 *1039 * ALTER "Y" INDEX REGISTER1040 *1041 FBD0 8D 72 ALTRY BSR PRTIY PRINT MSG " IY = "1042 FBD2 8D DC BSR JOUT1S OUTPUT SPACE1043 FBD4 8D E0 BSR JIN1ADR1044 FBD6 29 02 BVS ALTYD1045 FBD8 AF 46 STX 6,U $F8F01046 FBDA 39 ALTYD RTS ;1047 *1048 * ALTER "X" INDEX REGISTER1049 *1050 FBDB 8D 5E ALTRX BSR PRTIX $FCE0 PRINT MSG " IX = "1051 FBDD 8D D1 BSR JOUT1S OUTPUT SPACE1052 FBDF 8D D5 BSR JIN1ADR1053 FBE1 29 02 BVS ALTXD1054 FBE3 AF 44 STX 4,U1055 FBE5 39 ALTXD RTS ;1056 *1057 * ALTER "DP" DIRECT PAGE REGISTER1058 *1059 FBE6 8D 49 ALTRDP BSR PRTDP $FCD5 PRINT MSG " DP = "1060 FBE8 8D C6 BSR JOUT1S OUTPUT SPACE1061 FBEA 8D C7 BSR JBYTE INPUT BYTE (2 HEX CHAR)1062 FBEC 29 02 BVS ALTDPD1063 FBEE A7 43 STA 3,U1064 FBF0 39 ALTDPD RTS ;1065 *1066 * ALTER "B" ACCUMULATOR1067 *1068 FBF1 8D 6C ALTRB BSR PRTB $FD09 PRINT MSG " B = "1069 FBF3 8D BB BSR JOUT1S OUTPUT SPACE1070 FBF5 8D BC BSR JBYTE INPUT BYTE (2 HEX CHAR)1071 FBF7 29 02 BVS ALTBD1072 FBF9 A7 42 STA 2,U1073 FBFB 39 ALTBD RTS $F91C1074 *1075 * ALTER "A" ACCUMULATOR1076 *1077 FBFC 8D 58 ALTRA BSR PRTA $FCFF RINT MSG " A = "1078 FBFE 8D B0 BSR JOUT1S OUTPUT SPACE1079 FC00 8D B1 BSR JBYTE INPUT BYTE (2 HEX CHAR)1080 FC02 29 02 BVS ALTAD1081 FC04 A7 41 STA 1,U1082 FC06 39 ALTAD RTS ;1083 *1084 * ALTER "CC" REGISTER1085 *1086 FC07 8D 5F ALTRCC BSR PRTCC $FD13 PRINT MSG " CC: "1087 FC09 8D A5 BSR JOUT1S OUTPUT SPACE1088 FC0B 8D A6 BSR JBYTE INPUT BYTE (2 HEX CHAR)1089 FC0D 29 04 BVS ALTCCD1090 FC0F 8A 80 ORA #$80 SETS "E" FLAG IN PRINT LIST1091 FC11 A7 C4 STA ,U1092 FC13 39 ALTCCD RTS ;1093 *1094 * PDATA1095 *1096 FC14 17 01 2B PRINT LBSR OUTCH1097 FC17 A6 80 PDATA LDA ,X+ GET 1st CHAR. TO PRINT1098 FC19 81 04 CMPA #4 IS IT EOT?1099 FC1B 26 F7 BNE PRINT IF NOT EOT PRINT IT1100 FC1D 39 RTS ;1101 *1102 * PRINT REGISTERS1103 *1104 FC1E 8E FD E2 PRTSP LDX #MSG10 POINT TO MSG "SP="1105 FC21 8D F4 BSR PDATA PRINT MSG1106 FC23 1F 31 TFR U,X1107 FC25 16 00 BF JOUT4H LBRA OUT4H1108 *1109 FC28 8E FD EE PRTUS LDX #MSG12 POINT TO MSG "US="1110 FC2B 8D EA BSR PDATA PRINT MSG1111 FC2D AE 48 LDX 8,U1112 FC2F 20 F4 BRA JOUT4H1113 *1114 FC31 8E FE 00 PRTDP LDX #MSG15 POINT TO MSG "DP="1115 FC34 8D E1 BSR PDATA PRINT MSG1116 FC36 A6 43 LDA 3,U1117 FC38 16 00 B4 JOUT2H LBRA OUT2H OUTPUT HEX BYTE AS ASCII1118 *1119 FC3B 8E FD FA PRTIX LDX #MSG14 POINT TO MSG "IX="1120 FC3E 8D D7 BSR PDATA PRINT MSG1121 FC40 AE 44 LDX 4,U $FCE61122 FC42 20 E1 BRA JOUT4H1123 *1124 FC44 8E FD F4 PRTIY LDX #MSG13 POINT TO MSG "IY="1125 FC47 8D CE BSR PDATA PRINT MSG1126 FC49 AE 46 LDX 6,U1127 FC4B 20 D8 BRA JOUT4H1128 *1129 FC4D 8E FD E8 PRTPC LDX #MSG11 POINT TO MSG "PC="1130 FC50 8D C5 BSR PDATA PRINT MSG1131 FC52 AE 4A LDX 10,U1132 FC54 20 CF BRA JOUT4H1133 *1134 FC56 8E FE 06 PRTA LDX #MSG16 POINT TO MSG "A="1135 FC59 8D BC BSR PDATA PRINT MSG1136 FC5B A6 41 LDA 1,U1137 FC5D 20 D9 BRA JOUT2H OUTPUT HEX BYTE AS ASCII1138 *1139 FC5F 8E FE 0B PRTB LDX #MSG17 POINT TO MSG "B="1140 FC62 8D B3 BSR PDATA PRINT MSG1141 FC64 A6 42 LDA 2,U1142 FC66 20 D0 BRA JOUT2H OUTPUT HEX BYTE AS ASCII1143 *1144 FC68 8E FE 10 PRTCC LDX #MSG18 POINT TO MSG "CC:"1145 FC6B 8D AA BSR PDATA PRINT MSG1146 FC6D A6 C4 LDA ,U1147 FC6F 8E FE 17 LDX #MSG19 POINT TO MSG "EFHINZVC"1148 FC72 16 00 90 LBRA BIASCI OUTPUT IN BINARY/ASCII FORMAT1149 *1150 * "R" DISPLAY REGISTERS1151 *1152 FC75 8E FD DE REGSTR LDX #MSG5 POINT TO MSG " - "1153 FC78 17 FF 27 LBSR PSTRNG PRINT MSG1154 FC7B 8D A1 BSR PRTSP $FCBF1155 FC7D 8D A9 BSR PRTUS $FCCA1156 FC7F 8D B0 BSR PRTDP $FCD51157 FC81 8D B8 BSR PRTIX $FCE01158 FC83 8D BF BSR PRTIY $FCEB1159 FC85 8E FD DE LDX #MSG5 POINT TO MSG " - "1160 FC88 17 FF 17 LBSR PSTRNG PRINT MSG1161 FC8B 8D C0 BSR PRTPC $FCF51162 FC8D 8D C7 BSR PRTA $FCFF1163 FC8F 8D CE BSR PRTB $FD091164 FC91 20 D5 BRA PRTCC $FD131165 *1166 * THE FOLLOWING ROUTINE LOOPS WAITING FOR THE1167 * OPERATOR TO INPUT TWO VALID HEX ADDRESSES.1168 * THE FIRST ADDRESS INPUT IS RETURNED IN "IY".1169 * THE SECOND IS RETURNED IN "IX". THE "V" BIT1170 * IN THE C-CODE REG. IS SET IF AN INVALID HEX1171 * ADDRESS IS INPUT.1172 *1173 FC93 8D 09 IN2ADR BSR IN1ADR GET FIRST ADDRESS1174 FC95 29 4D BVS NOTHEX EXIT IF NOT VALID HEX1175 FC97 1F 12 TFR X,Y SAVE FIRST ADDR. IN "IY"1176 FC99 86 2D LDA #'-1177 FC9B 17 00 A4 LBSR OUTCH PRINT " - "1178 *1179 * THE FOLLOWING ROUTINE LOOPS WAITING FOR THE1180 * OPERATOR TO INPUT ONE VALID HEX ADDRESS. THE1181 * ADDRESS IS RETURNED IN THE "X" REGISTER.1182 *1183 FC9E 8D 0E IN1ADR BSR BYTE INPUT BYTE (2 HEX CHAR)1184 FCA0 29 42 BVS NOTHEX EXIT IF NOT VALID HEX1185 FCA2 1F 01 TFR D,X1186 FCA4 8D 08 BSR BYTE INPUT BYTE (2 HEX CHAR)1187 FCA6 29 3C BVS NOTHEX1188 FCA8 34 10 PSHS X1189 FCAA A7 61 STA 1,S1190 FCAC 35 90 PULS X,PC1191 *1192 ***** INPUT BYTE (2 HEX CHAR.) *****1193 *1194 FCAE 8D 11 BYTE BSR INHEX GET HEX LEFT1195 FCB0 29 32 BVS NOTHEX EXIT IF NOT VALID HEX1196 FCB2 48 ASLA ;1197 FCB3 48 ASLA ;1198 FCB4 48 ASLA ; SHIFT INTO LEFT NIBBLE1199 FCB5 48 ASLA ;1200 FCB6 1F 89 TFR A,B PUT HEXL IN "B"1201 FCB8 8D 07 BSR INHEX GET HEX RIGHT1202 FCBA 29 28 BVS NOTHEX EXIT IF NOT VALID HEX1203 FCBC 34 04 PSHS B PUSH HEXL ON STACK1204 FCBE AB E0 ADDA ,S+ ADD HEXL TO HEXR AND ADJ. STK1205 FCC0 39 RTS RETURN WITH HEX L&R IN "A"1206 *1207 *1208 FCC1 8D 57 INHEX BSR ECHON INPUT ASCII CHAR.1209 FCC3 81 30 CMPA #'0 IS IT > OR = "0" ?1210 FCC5 25 1D BCS NOTHEX IF LESS IT AIN'T HEX1211 FCC7 81 39 CMPA #'9 IS IT < OR = "9" ?1212 FCC9 22 03 BHI INHEXA IF > MAYBE IT'S ALPHA1213 FCCB 80 30 SUBA #$30 ASCII ADJ. NUMERIC1214 FCCD 39 RTS ;1215 *1216 *1217 FCCE 81 41 INHEXA CMPA #'A IS IT > OR = "A"1218 FCD0 25 12 BCS NOTHEX IF LESS IT AIN'T HEX1219 FCD2 81 46 CMPA #'F IS IT < OR = "F" ?1220 FCD4 22 03 BHI INHEXL IF > IT AIN'T HEX1221 FCD6 80 37 SUBA #$37 ASCII ADJ. ALPHA1222 FCD8 39 RTS ;1223 *1224 FCD9 81 61 INHEXL CMPA #'a IS IT > OR = "a"1225 FCDB 25 07 BCS NOTHEX IF LESS IT AIN'T HEX1226 FCDD 81 66 CMPA #'f IS IT < "f"1227 FCDF 22 03 BHI NOTHEX IF > IT AIN'T HEX1228 FCE1 80 57 SUBA #$57 ADJUST TO LOWER CASE1229 FCE3 39 RTS ;1230 *1231 *1232 FCE4 1A 02 NOTHEX ORCC #2 SET (V) FLAG IN C-CODES REGISTER1233 FCE6 39 RTS ;1234 *1235 *1236 FCE7 34 10 OUT4H PSHS X PUSH X-REG. ON THE STACK1237 FCE9 35 02 PULS A POP MS BYTE OF X-REG INTO A-ACC.1238 FCEB 8D 02 BSR OUTHL OUTPUT HEX LEFT1239 FCED 35 02 PULS A POP LS BYTE OF X-REG INTO A-ACC.1240 FCEF OUTHL EQU *1241 FCEF 34 02 OUT2H PSHS A SAVE IT BACK ON STACK1242 FCF1 44 LSRA CONVERT UPPER HEX NIBBLE TO ASCII1243 FCF2 44 LSRA ;1244 FCF3 44 LSRA ;1245 FCF4 44 LSRA ;1246 FCF5 8D 04 BSR XASCII PRINT HEX NIBBLE AS ASCII1247 FCF7 35 02 OUTHR PULS A CONVERT LOWER HEX NIBBLE TO ASCII1248 FCF9 84 0F ANDA #$0F STRIP LEFT NIBBLE1249 FCFB 8B 30 XASCII ADDA #$30 ASCII ADJ1250 FCFD 81 39 CMPA #$39 IS IT < OR = "9" ?1251 FCFF 2F 02 BLE OUTC IF LESS, OUTPUT IT1252 FD01 8B 07 ADDA #7 IF > MAKE ASCII LETTER1253 FD03 20 3D OUTC BRA OUTCH OUTPUT CHAR1254 *1255 * BINARY / ASCII --- THIS ROUTINE1256 * OUTPUTS A BYTE IN ENHANCED1257 * BINARY FORMAT. THE ENHANCEMENT1258 * IS DONE BY SUBSTITUTING ASCII1259 * LETTERS FOR THE ONES IN THE BYTE.1260 * THE ASCII ENHANCEMENT LETTERS1261 * ARE OBTAINED FROM THE STRING1262 * POINTED TO BY THE INDEX REG. "X".1263 *1264 FD05 34 02 BIASCI PSHS A SAVE "A" ON STACK1265 FD07 C6 08 LDB #8 PRESET LOOP# TO BITS PER BYTE1266 FD09 A6 80 OUTBA LDA ,X+ GET LETTER FROM STRING1267 FD0B 68 E4 ASL ,S TEST BYTE FOR "1" IN B71268 FD0D 25 02 BCS PRTBA IF ONE PRINT LETTER1269 FD0F 86 2D LDA #'- IF ZERO PRINT "-"1270 FD11 8D 2F PRTBA BSR OUTCH PRINT IT1271 FD13 8D 2B BSR OUT1S PRINT SPACE1272 FD15 5A DECB SUB 1 FROM #BITS YET TO PRINT1273 FD16 26 F1 BNE OUTBA1274 FD18 35 82 PULS A,PC1275 *1276 IFD EXTOPT1277 *1278 * EXTENDED USER COMMANDS1279 *1280 USRCMD JMP [MONEXT+EXTCMD]1281 ENDIF EXTOPT1281 ENDIF EXTOPT1282 *1283 *1284 FD1A 7D DF E2 ECHON TST ECHO IS ECHO REQUIRED ?1285 FD1D 27 06 BEQ INCH ECHO NOT REQ. IF CLEAR1286 *1287 * INCHE1288 *1289 * ---GETS CHARACTER FROM TERMINAL AND1290 * ECHOS SAME. THE CHARACTER IS RETURNED1291 * IN THE "A" ACCUMULATOR WITH THE PARITY1292 * BIT MASKED OFF. ALL OTHER REGISTERS1293 * ARE PRESERVED.1294 *1295 FD1F 8D 04 INCHE BSR INCH GET CHAR FROM TERMINAL1296 FD21 84 7F ANDA #$7F STRIP PARITY FROM CHAR.1297 FD23 20 1D BRA OUTCH ECHO CHAR TO TERMINAL1298 *1299 * INCH1300 *1301 * GET CHARACTER FROM TERMINAL. RETURN1302 * CHARACTER IN "A" ACCUMULATOR AND PRESERVE1303 * ALL OTHER REGISTERS. THE INPUT CHARACTER1304 * IS 8 BITS AND IS NOT ECHOED.1305 *1306 *1307 FD25 34 10 INCH PSHS X SAVE IX1308 FD27 BE DF E0 GETSTA LDX CPORT POINT TO TERMINAL PORT1309 FD2A A6 84 LDA ,X FETCH PORT STATUS1310 FD2C 85 01 BITA #1 TEST READY BIT, RDRF ?1311 IFD PS2OPT1312 BNE GETST11313 LDX #PS2KBD1314 LDA ,X1315 BITA #11316 ENDIF PS2OPT1316 ENDIF PS2OPT1317 FD2E 27 F7 BEQ GETSTA IF NOT RDY, THEN TRY AGAIN1318 FD30 A6 01 GETST1 LDA 1,X FETCH CHAR1319 FD32 35 90 PULS X,PC RESTORE IX1320 *1321 * INCHEK1322 *1323 * CHECK FOR A CHARACTER AVAILABLE FROM1324 * THE TERMINAL. THE SERIAL PORT IS CHECKED1325 * FOR READ READY. ALL REGISTERS ARE1326 * PRESERVED, AND THE "Z" BIT WILL BE1327 * CLEAR IF A CHARACTER CAN BE READ.1328 *1329 *1330 FD34 34 02 INCHEK PSHS A SAVE A ACCUM.1331 FD36 A6 9F DF E0 LDA [CPORT] FETCH PORT STATUS1332 FD3A 85 01 BITA #1 TEST READY BIT, RDRF ?1333 IFD PS2OPT1334 BNE INCHEK11335 LDA PS2KBD1336 BITA #1 TEST READY BIT< RDRF ?1337 ENDIF PS2OPT1337 ENDIF PS2OPT1338 FD3C 35 82 INCHEK1 PULS A,PC RESTORE A ACCUM.1339 *1340 FD3E 8D 00 OUT2S BSR OUT1S OUTPUT 2 SPACES1341 FD40 86 20 OUT1S LDA #$20 OUTPUT 1 SPACE1342 *1343 *1344 * OUTCH1345 *1346 * OUTPUT CHARACTER TO TERMINAL.1347 * THE CHAR. TO BE OUTPUT IS1348 * PASSED IN THE A REGISTER.1349 * ALL REGISTERS ARE PRESERVED.1350 *1351 OUTCH IFD VDUOPT1352 BSR VOUTCH1353 ENDIF VDUOPT1353 ENDIF VDUOPT1354 IFD DG640OPT1355 BSR VOUTCH1356 ENDIF DG640OPT1356 ENDIF DG640OPT1357 FD42 34 12 AOUTCH PSHS A,X SAVE A ACCUM AND IX1358 FD44 BE DF E0 LDX CPORT GET ADDR. OF TERMINAL1359 FD47 A6 84 FETSTA LDA ,X FETCH PORT STATUS1360 FD49 85 02 BITA #2 TEST TDRE, OK TO XMIT ?1361 FD4B 27 FA BEQ FETSTA IF NOT LOOP UNTIL RDY1362 FD4D 35 02 PULS A GET CHAR. FOR XMIT1363 FD4F A7 01 STA 1,X XMIT CHAR.1364 FD51 35 90 PULS X,PC RESTORE IX1365 *1366 * IO INITIALIZATION1367 *1368 FD53 IOINIZ EQU *1369 IFD VDUOPT1370 BSR VINIZ1371 ENDIF VDUOPT1371 ENDIF VDUOPT1372 IFD DG640OPT1373 BSR VINIZ1374 ENDIF DG640OPT1374 ENDIF DG640OPT1375 FD53 BE DF E0 ACINIZ LDX CPORT POINT TO CONTROL PORT ADDRESS1376 FD56 86 03 LDA #3 RESET ACIA PORT CODE1377 FD58 A7 84 STA ,X STORE IN CONTROL REGISTER1378 FD5A 86 11 LDA #$11 SET 8 DATA, 2 STOP AN 0 PARITY1379 FD5C A7 84 STA ,X STORE IN CONTROL REGISTER1380 FD5E 6D 01 TST 1,X ANYTHING IN DATA REGISTER?1381 FD60 86 FF LDA #$FF TURN ON ECHO FLAG1382 FD62 B7 DF E2 STA ECHO1383 FD65 39 RTS1384 *1385 IFD VDUOPT1386 *1387 ***************************************************1388 * VDU8 ADM3A REGISTER-MAPPED EMULATOR *1389 * *1390 * 80 x 25 Characters1391 *1392 ***************************************************1393 *1394 ***************************************************1395 * INITIALIZE EMULATOR *1396 ***************************************************1397 *1398 VINIZ LDX #VDU1399 LDD #01400 STD COLADX AND ROWADX1401 STA VDUCOL,X1402 STB VDUROW,X1403 STB VDUOFF,X1404 STD NEWROW AND ESCFLG1405 LDB #$021406 STB VDUATT,X1407 CLR ESCFLG1408 LDA #$1B SEND ESCAPE1409 BSR VOUTCH1410 LDA #'Y CLEAR TO END OF SCREEN1411 *1412 ** VIDEO OUTPUT ROUTINE1413 *1414 VOUTCH PSHS A,B,X SAVE REGISTERS1415 LDX #VDU POINT TO VDU REGISTERS1416 *1417 ** CHECK FOR ESCAPE SEQUENCE1418 *1419 TST ESCFLG ESCAPE ACTIVE?1420 BEQ SOROU1 BRANCH IF NOT1421 BSR ESCAPE ELSE DO ESCAPE1422 BRA RETURN AND RETURN1423 *1424 ** CHECK FOR CONTROL CHARACTERS1425 *1426 SOROU1 CMPA #$20 CONTROL CODES?1427 BHS SOROU21428 BSR CONTRL BRANCH IF SO1429 BRA RETURN1430 *1431 ** OUTPUT TEXT CHARACTER1432 *1433 SOROU2 STAA VDUCHR,X DISPLAY CHARACTER1434 LBSR NEWCOL UPDATE COLUMN1435 *1436 ** DISPLAY CURSOR AND RETURN1437 *1438 RETURN PULS A,B,X,PC RESTORE REGISTERS AND RETURN1439 *1440 ***************************************************1441 * CONTROL CODE HANDLERS *1442 ***************************************************1443 *1444 CONTRL CMPA #$08 CTRL H - BACKSPACE ?1445 LBEQ BACKSP1446 CMPA #$1B ESCAPE SEQUENCE?1447 LBEQ SETESC1448 CMPA #$1A CTRL Z - Clear Screen1449 LBEQ CLRSCR1450 CMPA #$16 CTRL ^ - Home1451 LBEQ HOME1452 CMPA #$D CTRL M - RETURN?1453 LBEQ CRETN1454 CMPA #$0C CTRL L - CHAR RIGHT1455 LBEQ CHRIGHT1456 CMPA #$0B CTRL K - MOVE UP ONE LINE1457 LBEQ LINEUP1458 CMPA #$0A CTRL J - LINE FEED1459 BNE RETESC NONE OF THESE, RETURN1460 *1461 ***************************************** LINE FEED1462 *1463 LINEFD LDD COLADX GET CURRENT COLUMN AND ROW1464 INCB BUMP ROW1465 CMPB #NUMLIN SCROLL TIME?1466 LBNE NEWCUR POSITION CURSOR IF NOT1467 LBRA SCROLL ELSE SCROLL IT1468 *1469 ***************************************** LINE FEED1470 *1471 LINEUP LDD COLADX GET CURRENT COLUMN AND ROW1472 TSTB AT TOP OF SCREEN ?1473 LBEQ RETESC Yes, Ignore1474 DECB No, Decrement ROW1475 LBRA NEWCUR POSITION CURSOR1476 *1477 *********************************** BACK SPACE1478 *1479 BACKSP LDA COLADX1480 BEQ RETESC RETURN1481 DECA1482 LBRA POSCOL POSITION CURSOR1483 *1484 *********************************** CURSOR RIGHT1485 *1486 CHRIGHT LDA COLADX1487 INCA1488 CMPA #LINLEN1489 LBEQ RETESC1490 LBRA POSCOL1491 *1492 *********************************** CURSOR RIGHT1493 *1494 HOME LDD #0 HOME - POSITION TOP OF SCREEN1495 LBRA NEWCUR1496 *1497 ***************************************************1498 * ESCAPE HANDLERS *1499 ***************************************************1500 *1501 ESCAPE LDAB ESCFLG GET FLAG1502 CMPB #'= SETTING CURSOR?1503 BEQ ESCCUR BRANCH IF SO1504 CMPA #'Y CLEAR TO END OF SCREEN?1505 LBEQ ESCCLS1506 CMPA #'T CLEAR TO END OF LINE?1507 BEQ ESCCLL1508 CMPA #'= STARTING CURSOR SET?1509 BNE CLRESC BRANCH IF NOT1510 *1511 ***************************** START ESCAPE SEQUENCE1512 *1513 SETESC STAA ESCFLG ELSE START CURSORING1514 RTS AND RETURN1515 *1516 CLRESC CLR ESCFLG NO OTHERS SUPPORTED1517 RETESC RTS SO RETURN1518 *1519 ********************************* SET SCREEN CURSOR1520 *1521 ESCCUR TST NEWROW ROW SET?1522 BNE ESCCU1 BRANCH IF SO1523 STAA NEWROW ELSE SET NEW ROW1524 RTS AND RETURN1525 *1526 ESCCU1 CLR ESCFLG1527 SUBA #$20 ADJUST COLUMN ADDRESS1528 CMPA #LINLEN-1 CHECK FOR ACCEPTABLE COLUM1529 BHI RETESC NOT OK, DO NOTHING1530 *1531 ESCCU2 LDAB NEWROW1532 CLR NEWROW1533 SUBB #$20 ADJUST TO ROW ADDRESS1534 CMPB #NUMLIN-1 CHECK FOR ACCEPTABLE ROW1535 BHI RETESC ELSE RETURN DOING NOTHING1536 BRA NEWCUR GO SET NEW CURSOR IF SO1537 *1538 ****************** CLEAR FROM CURSOR TO END OF LINE1539 CLRSCR LDD #0 CLEAR FROM TOP OF SCREEN1540 BSR NEWCUR1541 ESCCLL LDA COLADX1542 LDB #$20 AND CLEAR CHAR1543 ESCCL1 STB VDUCHR,X DISPLAY TEXT1544 INCA1545 STA VDUCOL,X1546 CMPA #LINLEN UNTIL END OF LINE1547 BNE ESCCL11548 CLR ESCFLG1549 RTS1550 *1551 *********************************** CARRIAGE RETURN1552 *1553 CRETN CLRA SET COLUMN ZERO1554 POSCOL LDB ROWADX GET CURRENT ROW1555 *1556 *********** GENERATE NEW CURSOR POSITION AND RETURN1557 *1558 NEWCUR STD COLADX SAVE NEW ROW AND COLUMN1559 STA VDUCOL,X SET NEW COLUMN1560 STB VDUROW,X SET NEW ROW1561 RTS AND RETURN1562 *1563 ********************* UPDATE CURRENT COLUMN AND ROW1564 *1565 NEWCOL LDD COLADX GET ROW AND COLUMN1566 INCA BUMP COLUMN1567 CMPA #LINLEN ROLL?1568 BNE NEWCUR BRANCH IF NOT1569 CLRA ELSE RESET TO ZERO1570 INCB AND BUMP ROW1571 CMPB #NUMLIN1572 BNE NEWCUR1573 DECB BOTTOM ROW1574 BSR NEWCUR1575 *1576 ********************************* SCROLL THE SCREEN1577 *1578 SCROLL LDB VDUOFF,X1579 INCB1580 CMPB #NUMLIN1581 BLO SCROL11582 CLRB1583 SCROL1 STB VDUOFF,X1584 *1585 **************** CLEAR FROM CURSOR TO END OF SCREEN1586 *1587 ESCCLS LDB COLADX GET CURSOR1588 LDA #$20 GET A SPACE1589 ESCCLS1 STB COLADX1590 STB VDUCOL,X1591 STA VDUCHR,X1592 INCB1593 CMPB #LINLEN1594 BNE ESCCLS11595 *1596 LDB ROWADX1597 INCB1598 CMPB #NUMLIN1599 BEQ ESCCLS21600 STB ROWADX1601 STB VDUROW,X1602 CLRB1603 BRA ESCCLS11604 *1605 ESCCLS2 CLRB1606 STB COLADX1607 STB VDUCOL,X1608 STB ESCFLG1609 RTS1610 ENDIF VDUOPT1610 ENDIF VDUOPT1611 *1612 IFD DG640OPT1613 ***************************************************1614 * TELEVIDEO-TYPE MEMORY-MAPPED EMULATOR *1615 * *1616 * FOR HARD-WIRED MEMORY-MAPPED DISPLAYS USING THE *1617 * HIGH ORDER BIT OF EACH BYTE FOR REVERSE VIDEO *1618 * CURSORING (SUCH AS THE THOMAS INSTRUMENTATION *1619 * 16x64 BOARD). *1620 ***************************************************16211622 ***************************************************1623 * INITIALIZE EMULATOR *1624 ***************************************************16251626 VINIZ LDX #01627 STX COLADX AND ROWADX1628 STX NEWROW AND ESCFLG1629 LDX #SCREEN POINT TO SCREEN1630 STX CURSOR SET PROGRAM CURSOR1631 LDA #$1B SEND ESCAPE1632 BSR VOUTCH1633 LDA #'Y CLEAR TO END OF SCREEN1634 *1635 ** VIDEO OUTPUT ROUTINE1636 *1637 VOUTCH PSHS A,B,X SAVE REGISTERS1638 *1639 ** CLEAR CURSOR1640 LDX CURSOR1641 LDB 0,X1642 ANDB #$7F1643 STB 0,X1644 *1645 ** CHECK FOR ESCAPE SEQUENCE1646 TST ESCFLG ESCAPE ACTIVE?1647 BEQ SOROU1 BRANCH IF NOT1648 BSR ESCAPE ELSE DO ESCAPE1649 BRA RETURN AND RETURN1650 *1651 ** CHECK FOR CONTROL CHARACTERS1652 SOROU1 CMPA #$20 CONTROL CODES?1653 BHS SOROU21654 BSR CONTRL BRANCH IF SO1655 BRA RETURN1656 *1657 ** OUTPUT TEXT CHARACTER1658 SOROU2 LDX CURSOR ELSE GET CURSOR1659 STAA 0,X DISPLAY CHARACTER1660 LBSR NEWCOL UPDATE COLUMN1661 *1662 ** DISPLAY CURSOR AND RETURN1663 RETURN LDX CURSOR AND DISPLAY IT1664 LDB ,X1665 ORAB #$80 WITH REVID1666 STB ,X1667 PULS A,B,X,PC RESTORE REGISTERS AND RETURN16681669 ***************************************************1670 * CONTROL CODE HANDLERS *1671 ***************************************************16721673 CONTRL CMPA #$08 CTRL H - BACKSPACE ?1674 LBEQ BACKSP1675 CMPA #$1B ESCAPE SEQUENCE?1676 LBEQ SETESC1677 CMPA #$D CTRL M - RETURN?1678 LBEQ CRETN1679 CMPA #$0A CTRL J - LINE FEED1680 BNE RETESC NONE OF THESE, RETURN16811682 ***************************************** LINE FEED16831684 LINEFD LDD COLADX GET CURRENT COLUMN AND ROW1685 INCB BUMP ROW1686 CMPB #NUMLIN SCROLL TIME?1687 LBNE NEWCUR POSITION CURSOR IF NOT1688 LBRA SCROLL ELSE SCROLL IT16891690 ***************************************** LINE FEED16911692 LINEUP LDD COLADX GET CURRENT COLUMN AND ROW1693 TSTB AT TOP OF SCREEN ?1694 BEQ RETESC Yes, Ignore1695 DECB No, Decrement ROW1696 LBRA NEWCUR POSITION CURSOR169716981699 *********************************** BACK SPACE17001701 BACKSP LDA COLADX1702 BEQ RETESC RETURN1703 DECA1704 LBRA POSCOL POSITION CURSOR17051706 *********************************** CURSOR RIGHT17071708 CHRIGHT LDA COLADX1709 INCA1710 CMPA #LINLEN1711 BEQ RETESC1712 LBRA POSCOL17131714 ***************************************************1715 * ESCAPE HANDLERS *1716 ***************************************************17171718 ESCAPE LDAB ESCFLG GET FLAG1719 CMPB #'= SETTING CURSOR?1720 BEQ ESCCUR BRANCH IF SO1721 CMPA #'Y CLEAR TO END OF SCREEN?1722 LBEQ ESCCLS1723 CMPA #'T CLEAR TO END OF LINE?1724 BEQ ESCCLL1725 CMPA #'E INSERT LINE?1726 BEQ ESCINL1727 CMPA #'R DELETE LINE?1728 BEQ ESCDLL1729 CMPA #'= STARTING CURSOR SET?1730 BNE CLRESC BRANCH IF NOT17311732 ***************************** START ESCAPE SEQUENCE17331734 SETESC STAA ESCFLG ELSE START CURSORING1735 RTS AND RETURN17361737 CLRESC CLR ESCFLG NO OTHERS SUPPORTED1738 RETESC RTS SO RETURN17391740 ********************************* SET SCREEN CURSOR17411742 ESCCUR TST NEWROW ROW SET?1743 BNE ESCCU1 BRANCH IF SO1744 STAA NEWROW ELSE SET NEW ROW1745 RTS AND RETURN17461747 ESCCU1 CLR ESCFLG1748 SUBA #$20 ADJUST COLUMN ADDRESS1749 CMPA #LINLEN-1 CHECK FOR ACCEPTABLE COLUM1750 BHI RETESC NOT OK, DO NOTHING17511752 ESCCU2 LDAB NEWROW1753 CLR NEWROW1754 SUBB #$20 ADJUST TO ROW ADDRESS1755 CMPB #NUMLIN-1 CHECK FOR ACCEPTABLE ROW1756 BHI RETESC ELSE RETURN DOING NOTHING1757 BRA NEWCUR GO SET NEW CURSOR IF SO1758 *1759 *************************** DELETE LINE FROM SCREEN17601761 ESCDLL BSR CRETN GO COL. ZERO1762 LDB ROWADX1763 CMPB #NUMLIN-11764 BEQ SCROL31765 BRA SCROL1 AND DELETE THIS LINE17661767 *************************** INSERT LINE INTO SCREEN17681769 ESCINL BSR CRETN GO TO COL. ZERO1770 LDAB ROWADX1771 CMPB #NUMLIN-11772 BEQ ESCCLL1773 *1774 ** SCROLL SCREEN DOWN FROM CURSOR1775 *1776 LDX #SCREEN+SCNLEN-LINLEN1777 ESCIN0 LDAA 0,-X1778 STAA LINLEN,X1779 LDA SCNLEN,X1780 STA SCNLEN+LINLEN,X1781 CPX CURSOR1782 BNE ESCIN017831784 ****************** CLEAR FROM CURSOR TO END OF LINE17851786 ESCCLL LDA COLADX GET CURRENT COLUMN1787 LDX CURSOR GET CURSOR1788 LDB #$20 AND CLEAR CHAR1789 ESCLL1 STB SCNLEN,X CLEAR ATTRIBUTE1790 STB ,X+ CLEAR TEXT1791 INCA1792 CMPA #LINLEN UNTIL END OF LINE1793 BNE ESCLL11794 CLR ESCFLG1795 RTS17961797 *********************************** CARRIAGE RETURN17981799 CRETN CLRA SET COLUMN ZERO1800 POSCOL LDB ROWADX GET CURRENT ROW18011802 *********** GENERATE NEW CURSOR POSITION AND RETURN18031804 NEWCUR STD COLADX SAVE NEW ROW AND COLUMN1805 LDA #LINLEN ELSE ADD A LINE1806 MUL LINLEN * ROWADX1807 ADDB COLADX1808 ADCA #01809 ADDD #SCREEN ADD SCREEN BASE.1810 STD CURSOR SAVE NEW CURSOR1811 TFR D,X GET CURSOR IN X1812 RTS AND RETURN18131814 ********************* UPDATE CURRENT COLUMN AND ROW18151816 NEWCOL LDD COLADX GET ROW AND COLUMN1817 INCA BUMP COLUMN1818 CMPA #LINLEN ROLL?1819 BNE NEWCUR BRANCH IF NOT1820 CLRA ELSE RESET TO ZERO1821 INCB AND BUMP ROW1822 CMPB #NUMLIN1823 BNE NEWCUR1824 DECB BOTTOM ROW1825 BSR NEWCUR18261827 ********************************* SCROLL THE SCREEN18281829 SCROLL LDX #SCREEN POINT TO SCREEN1830 SCROL1 LDA SCNLEN+LINLEN,X1831 STA SCNLEN,X1832 LDAA LINLEN,X MOVE TWO BYTES1833 STAA 0,X+ UP ONE LINE1834 CMPX #SCREEN+SCNLEN-LINLEN1835 BNE SCROL1 LOOP UNTIL DONE1836 BRA SCROL318371838 **************** CLEAR FROM CURSOR TO END OF SCREEN18391840 ESCCLS LDX CURSOR GET CURSOR1841 SCROL3 LDAA #$20 GET A SPACE1842 SCROL2 STA SCNLEN,X CLEAR ATTRIBUTES1843 STA ,X+ AND TEXT1844 CMPX #SCREEN+SCNLEN1845 BNE SCROL2 UNTIL DONE1846 CLR ESCFLG1847 RTS1848 ENDIF DG640OPT1848 ENDIF DG640OPT1849 *1850 IFD PRTOPT1851 *************************************1852 *1853 ** PRINTER DRIVER ROUTINES1854 *1855 *************************************1856 *1857 ** PINIZ - INITIATE PRINTER PORT1858 *1859 PINIZ PSHS B1860 LDD #DIRMSK*256+$04 ACCA=DIRMSK ACCB=$041861 STD PADATA SET DDR AND SELECT DATA1862 *1863 ** RESET PRINTER1864 LDB #PRESET1865 STAB PADATA1866 RESTLP INCB DELAY FOR RESET1867 BNE RESTLP1868 STAA PADATA ACCA=DIRMSK1869 *1870 ** INITALIZE PORT B (DATA PORT)1871 LDAA #$2A1872 STAA PBCTRL1873 LDD #$FF2E ACCA=$FF ACCB =%001011101874 STD PBDATA PBDREG PBCTRL1875 *1876 ** SELECT 66 LINES/PAGE1877 LDAA #$1B1878 BSR POUTCH1879 LDAA #'C1880 BSR POUTCH1881 LDAA #661882 PULS B1883 *************************************1884 *1885 ** OUTPUT A CHARACTER TO THE PRINTER1886 *1887 *************************************1888 POUTCH PSHS B1889 LDAB PBDATA CLEAR INTERRUPT BIT1890 *1891 ** WAIT TILL NOT BUSY1892 BUSYLP LDAB PADATA1893 BITB #PERROR1894 BEQ PEXIT1895 TSTB1896 BMI BUSYLP1897 *1898 ** NOW OUTPUT CHARACTER1899 STAA PBDATA1900 PEXIT PULS B,PC1901 *************************************1902 *1903 ** PCHK TEST IFD PRINTER READY1904 *1905 *************************************1906 PCHK TST PBCTRL TEST STATE OF CRB71907 RTS SET ON ACKNOWLEDGE1908 ENDIF PRTOPT1908 ENDIF PRTOPT1909 *************************************1910 *1911 * MONITOR KEYBOARD COMMAND JUMP TABLE1912 *1913 *************************************1914 *1915 FD66 JMPTAB EQU *1916 FD66 01 FCB 1 " ^A "1917 FD67 FB FC FDB ALTRA1918 FD69 02 FCB 2 " ^B "1919 FD6A FB F1 FDB ALTRB1920 FD6C 03 FCB 3 " ^C "1921 FD6D FC 07 FDB ALTRCC1922 FD6F 04 FCB 4 " ^D "1923 FD70 FB E6 FDB ALTRDP1924 FD72 10 FCB $10 " ^P "1925 FD73 FB B9 FDB ALTRPC1926 FD75 15 FCB $15 " ^U "1927 FD76 FB C5 FDB ALTRU1928 FD78 18 FCB $18 " ^X "1929 FD79 FB DB FDB ALTRX1930 FD7B 19 FCB $19 " ^Y "1931 FD7C FB D0 FDB ALTRY1932 *1933 FD7E 42 FCC 'B'1934 FD7F F9 5C FDB BRKPNT1935 FD81 45 FCC 'E'1936 FD82 F8 FD FDB MEMDUMP1937 FD84 47 FCC 'G'1938 FD85 F8 A5 FDB GO1939 FD87 4C FCC 'L'1940 FD88 FA E6 FDB LOAD1941 FD8A 50 FCC 'P'1942 FD8B FB 44 FDB PUNCH1943 FD8D 4D FCC 'M'1944 FD8E F8 A8 FDB MEMCHG1945 FD90 52 FCC 'R'1946 FD91 FC 75 FDB REGSTR1947 FD93 53 FCC 'S'1948 FD94 F8 F1 FDB DISSTK1949 FD96 58 FCC 'X'1950 FD97 F9 88 FDB XBKPNT1951 IFD MFDCOPT1952 FD99 44 FCC 'D' *** SWTPC USES 'U' FOR MINIBOOT1953 FD9A F9 D5 FDB MINBOOT1954 ENDIF MFDCOPT1955 IFD CF8OPT1956 FCC 'D' *** FPGA 8 BIT USES 'D' FOR CFBOOT1957 FDB CFBOOT1958 ENDIF CF8OPT1958 ENDIF CF8OPT1959 IFD IDEOPT1960 FCC 'D' *** XESS FPGA 16 BIT IDE USES 'D' FOR IDEBOOT1961 FDB IDEBOOT1962 ENDIF IDEOPT1962 ENDIF IDEOPT1963 IFD DMAFOPT1964 FD9C 55 FCC 'U' *** SWTPC USES 'D' FOR DMAF2 BOOT1965 FD9D FA 29 FDB DBOOT1966 ENDIF DMAFOPT1967 IFD EXTOPT1968 FCC 'U' *** IF FPGA, 'U' IS FOR USER1969 FDB USRCMD1970 ENDIF EXTOPT1970 ENDIF EXTOPT1971 IFD RTCOPT1972 FCC 'T'1973 FDB TIMSET1974 ENDIF RTCOPT1974 ENDIF RTCOPT1975 IFD TRAOPT1976 FCC "T"1977 FDB TRACE1978 ENDIF TRAOPT1978 ENDIF TRAOPT1979 *1980 FD9F TABEND EQU *1981 *1982 * ** 6809 VECTOR ADDRESSES **1983 *1984 * FOLLOWING ARE THE ADDRESSES OF THE VECTOR ROUTINES1985 * FOR THE 6809 PROCESSOR. DURING INITIALIZATION THEY1986 * ARE RELOCATED TO RAM FROM $DFC0 TO $DFCF. THEY ARE1987 * RELOCATED TO RAM SO THAT THE USER MAY REVECTOR TO1988 * HIS OWN ROUTINES IF HE SO DESIRES.1989 *1990 *1991 FD9F F9 94 RAMVEC FDB SWIE USER-V1992 FDA1 F8 A7 FDB RTI SWI3-V1993 FDA3 F8 A7 FDB RTI SWI2-V1994 FDA5 F8 A7 FDB RTI FIRQ-V1995 FDA7 F8 A7 FDB RTI IRQ-V1996 FDA9 F9 94 FDB SWIE SWI-V1997 FDAB FF FF FDB $FFFF SVC-VO1998 FDAD FF FF FDB $FFFF SVC-VL1999 *2000 * PRINTABLE MESSAGE STRINGS2001 *2002 FDAF 0D 0A 00 00 00 MSG1 FCB $D,$A,$0,$0,$0 * 0, CR/LF, 02003 FDB4 53 59 53 30 39 42 FCC 'SYS09BUG 1.4 FOR '55 47 20 31 2E 3420 46 4F 52 202004 IFD S3EOPT2005 FCC 'S3E '2006 ENDIF S3EOPT2006 ENDIF S3EOPT2007 IFD B5XOPT2008 FCC 'B5-X300 '2009 ENDIF B5XOPT2009 ENDIF B5XOPT2010 IFD S3SOPT2011 FCC 'S3STARTER '2012 ENDIF S3SOPT2012 ENDIF S3SOPT2013 IFD ADSOPT2014 FCC 'ADS6809 '2015 ENDIF ADSOPT2015 ENDIF ADSOPT2016 IFD SWTOPT`2017 FDC5 53 57 54 50 43 20 FCC 'SWTPC '2018 ENDIF SWTOPT2019 IFD XESOPT`2020 FCC 'XESS '2021 ENDIF XESOPT2021 ENDIF XESOPT2022 FDCB 20 2D 20 FCC ' - '2023 FDCE 04 FCB 42024 FDCF 4B 0D 0A 00 00 00 MSG2 FCB 'K,$D,$A,$00,$00,$00,$04 K, * CR/LF + 3 NULS042025 FDD6 3E MSG3 FCC '>'2026 FDD7 04 FCB 42027 FDD8 57 48 41 54 3F MSG4 FCC 'WHAT?'2028 FDDD 04 FCB 42029 FDDE 20 2D 20 MSG5 FCC ' - '2030 FDE1 04 FCB 4'2031 FDE2 20 20 53 50 3D MSG10 FCC ' SP='2032 FDE7 04 FCB 42033 FDE8 20 20 50 43 3D MSG11 FCC ' PC='2034 FDED 04 FCB 42035 FDEE 20 20 55 53 3D MSG12 FCC ' US='2036 FDF3 04 FCB 42037 FDF4 20 20 49 59 3D MSG13 FCC ' IY='2038 FDF9 04 FCB 42039 FDFA 20 20 49 58 3D MSG14 FCC ' IX='2040 FDFF 04 FCB 42041 FE00 20 20 44 50 3D MSG15 FCC ' DP='2042 FE05 04 FCB 42043 FE06 20 20 41 3D MSG16 FCC ' A='2044 FE0A 04 FCB 42045 FE0B 20 20 42 3D MSG17 FCC ' B='2046 FE0F 04 FCB 42047 FE10 20 20 43 43 3A 20 MSG18 FCC ' CC: '2048 FE16 04 FCB 42049 FE17 45 46 48 49 4E 5A MSG19 FCC 'EFHINZVC'56 432050 FE1F 53 31 MSG20 FCC 'S1'2051 FE21 04 FCB 42052 IFD DATOPT2053 *2054 * POWER UP/ RESET/ NMI ENTRY POINT2055 *2056 FF00 ORG $FF002057 *2058 *2059 FF00 8E FF F0 START LDX #IC11 POINT TO DAT RAM IC112060 FF03 86 0F LDA #$F GET COMPLIMENT OF ZERO2061 *2062 *2063 * INITIALIZE DAT RAM --- LOADS $F-$0 IN LOCATIONS $0-$F2064 * OF DAT RAM, THUS STORING COMPLEMENT OF MSB OF ADDRESS2065 * IN THE DAT RAM. THE COMPLEMENT IS REQUIRED BECAUSE THE2066 * OUTPUT OF IC11, A 74S189, IS THE INVERSE OF THE DATA2067 * STORED IN IT.2068 *2069 *2070 FF05 A7 80 DATLP STA ,X+ STORE & POINT TO NEXT RAM LOCATION2071 FF07 4A DECA GET COMP. VALUE FOR NEXT LOCATION2072 FF08 26 FB BNE DATLP ALL 16 LOCATIONS INITIALIZED ?2073 *2074 * NOTE: IX NOW CONTAINS $0000, DAT RAM IS NO LONGER2075 * ADDRESSED, AND LOGICAL ADDRESSES NOW EQUAL2076 * PHYSICAL ADDRESSES.2077 *2078 FF0A 86 F0 LDA #$F02079 FF0C A7 84 STA ,X STORE $F0 AT $FFFF2080 FF0E 8E D0 A0 LDX #$D0A0 ASSUME RAM TO BE AT $D000-$DFFF2081 FF11 10 8E 55 AA LDY #TSTPAT LOAD TEST DATA PATTERN INTO "Y"2082 FF15 EE 84 TSTRAM LDU ,X SAVE DATA FROM TEST LOCATION2083 FF17 10 AF 84 STY ,X STORE TEST PATTERN AT $D0A02084 FF1A 10 AC 84 CMPY ,X IS THERE RAM AT THIS LOCATION ?2085 FF1D 27 0B BEQ CNVADR IF MATCH THERE'S RAM, SO SKIP2086 FF1F 30 89 F0 00 LEAX -$1000,X ELSE POINT 4K LOWER2087 FF23 8C F0 A0 CMPX #$F0A0 DECREMENTED PAST ZER0 YET ?2088 FF26 26 ED BNE TSTRAM IF NOT CONTINUE TESTING FOR RAM2089 FF28 20 D6 BRA START ELSE START ALL OVER AGAIN2090 *2091 *2092 * THE FOLLOWING CODE STORES THE COMPLEMENT OF2093 * THE MS CHARACTER OF THE FOUR CHARACTER HEX2094 * ADDRESS OF THE FIRST 4K BLOCK OF RAM LOCATED2095 * BY THE ROUTINE "TSTRAM" INTO THE DAT RAM. IT2096 * IS STORED IN RAM IN THE LOCATION THAT IS2097 * ADDRESSED WHEN THE PROCESSOR ADDRESS IS $D---,2098 * THUS IF THE FIRST 4K BLOCK OF RAM IS FOUND2099 * WHEN TESTING LOCATION $70A0, MEANING THERE2100 * IS NO RAM PHYSICALLY ADDRESSED IN THE RANGE2101 * $8000-$DFFF, THEN THE COMPLEMENT OF THE2102 * "7" IN THE $70A0 WILL BE STORED IN2103 * THE DAT RAM. THUS WHEN THE PROCESSOR OUTPUTS2104 * AN ADDRESS OF $D---, THE DAT RAM WILL RESPOND2105 * BY RECOMPLEMENTING THE "7" AND OUTPUTTING THE2106 * 7 ONTO THE A12-A15 ADDRESS LINES. THUS THE2107 * RAM THAT IS PHYSICALLY ADDRESSED AT $7---2108 * WILL RESPOND AND APPEAR TO THE 6809 THAT IT2109 * IS AT $D--- SINCE THAT IS THE ADDRESS THE2110 * 6809 WILL BE OUTPUTING WHEN THAT 4K BLOCK2111 * OF RAM RESPONDS.2112 *2113 *2114 FF2A EF 84 CNVADR STU ,X RESTORE DATA AT TEST LOCATION2115 FF2C 1F 10 TFR X,D PUT ADDR. OF PRESENT 4K BLOCK IN D2116 FF2E 43 COMA COMPLEMENT MSB OF THAT ADDRESS2117 FF2F 44 LSRA PUT MS 4 BITS OF ADDRESS IN2118 FF30 44 LSRA LOCATION D0-D3 TO ALLOW STORING2119 FF31 44 LSRA IT IN THE DYNAMIC ADDRESS2120 FF32 44 LSRA TRANSLATION RAM.2121 FF33 B7 FF FD STA $FFFD STORE XLATION FACTOR IN DAT "D"2122 *2123 FF36 10 CE DF C0 LDS #STACK INITIALIZE STACK POINTER2124 *2125 *2126 * THE FOLLOWING CHECKS TO FIND THE REAL PHYSICAL ADDRESSES2127 * OF ALL 4K BLKS OF RAM IN THE SYSTEM. WHEN EACH 4K BLK2128 * OF RAM IS LOCATED, THE COMPLEMENT OF IT'S REAL ADDRESS2129 * IS THEN STORED IN A "LOGICAL" TO "REAL" ADDRESS XLATION2130 * TABLE THAT IS BUILT FROM $DFD0 TO $DFDF. FOR EXAMPLE IF2131 * THE SYSTEM HAS RAM THAT IS PHYSICALLY LOCATED (WIRED TO2132 * RESPOND) AT THE HEX LOCATIONS $0--- THRU $F---....2133 *2134 * 0 1 2 3 4 5 6 7 8 9 A B C D E F2135 * 4K 4K 4K 4K 4K 4K 4K 4K -- 4K 4K 4K 4K -- -- --2136 *2137 * ....FOR A TOTAL OF 48K OF RAM, THEN THE TRANSLATION TABLE2138 * CREATED FROM $DFD0 TO $DFDF WILL CONSIST OF THE FOLLOWING....2139 *2140 * 0 1 2 3 4 5 6 7 8 9 A B C D E F2141 * 0F 0E 0D 0C 0B 0A 09 08 06 05 00 00 04 03 F1 F02142 *2143 *2144 * HERE WE SEE THE LOGICAL ADDRESSES OF MEMORY FROM $0000-$7FFF2145 * HAVE NOT BEEN SELECTED FOR RELOCATION SO THAT THEIR PHYSICAL2146 * ADDRESS WILL = THEIR LOGICAL ADDRESS; HOWEVER, THE 4K BLOCK2147 * PHYSICALLY AT $9000 WILL HAVE ITS ADDRESS TRANSLATED SO THAT2148 * IT WILL LOGICALLY RESPOND AT $8000. LIKEWISE $A,$B, AND $C0002149 * WILL BE TRANSLATED TO RESPOND TO $9000,$C000, AND $D0002150 * RESPECTIVELY. THE USER SYSTEM WILL LOGICALLY APPEAR TO HAVE2151 * MEMORY ADDRESSED AS FOLLOWS....2152 *2153 * 0 1 2 3 4 5 6 7 8 9 A B C D E F2154 * 4K 4K 4K 4K 4K 4K 4K 4K 4K 4K -- -- 4K 4K -- --2155 *2156 *2157 FF3A 10 8E DF D0 LDY #LRARAM POINT TO LOGICAL/REAL ADDR. TABLE2158 FF3E A7 2D STA 13,Y STORE $D--- XLATION FACTOR AT $DFDD2159 FF40 6F 2E CLR 14,Y CLEAR $DFDE2160 FF42 86 F0 LDA #$F0 DESTINED FOR IC8 AN MEM EXPANSION ?2161 FF44 A7 2F STA 15,Y STORE AT $DFDF2162 FF46 86 0C LDA #$0C PRESET NUMBER OF BYTES TO CLEAR2163 FF48 6F A6 CLRLRT CLR A,Y CLEAR $DFDC THRU $DFD02164 FF4A 4A DECA SUB. 1 FROM BYTES LEFT TO CLEAR2165 FF4B 2A FB BPL CLRLRT CONTINUE IF NOT DONE CLEARING2166 FF4D 30 89 F0 00 FNDRAM LEAX -$1000,X POINT TO NEXT LOWER 4K OF RAM2167 FF51 8C F0 A0 CMPX #$F0A0 TEST FOR DECREMENT PAST ZERO2168 FF54 27 22 BEQ FINTAB SKIP IF FINISHED2169 FF56 EE 84 LDU ,X SAVE DATA AT CURRENT TEST LOCATION2170 FF58 10 8E 55 AA LDY #TSTPAT LOAD TEST DATA PATTERN INTO Y REG.2171 FF5C 10 AF 84 STY ,X STORE TEST PATT. INTO RAM TEST LOC.2172 FF5F 10 AC 84 CMPY ,X VERIFY RAM AT TEST LOCATION2173 FF62 26 E9 BNE FNDRAM IF NO RAM GO LOOK 4K LOWER2174 FF64 EF 84 STU ,X ELSE RESTORE DATA TO TEST LOCATION2175 FF66 10 8E DF D0 LDY #LRARAM POINT TO LOGICAL/REAL ADDR. TABLE2176 FF6A 1F 10 TFR X,D PUT ADDR. OF PRESENT 4K BLOCK IN D2177 FF6C 44 LSRA PUT MS 4 BITS OF ADDR. IN LOC. D0-D32178 FF6D 44 LSRA TO ALLOW STORING IT IN THE DAT RAM.2179 FF6E 44 LSRA2180 FF6F 44 LSRA2181 FF70 1F 89 TFR A,B SAVE OFFSET INTO LRARAM TABLE2182 FF72 88 0F EORA #$0F INVERT MSB OF ADDR. OF CURRENT 4K BLK2183 FF74 A7 A5 STA B,Y SAVE TRANSLATION FACTOR IN LRARAM TABLE2184 FF76 20 D5 BRA FNDRAM GO TRANSLATE ADDR. OF NEXT 4K BLK2185 FF78 86 F1 FINTAB LDA #$F1 DESTINED FOR IC8 AND MEM EXPANSION ?2186 FF7A 10 8E DF D0 LDY #LRARAM POINT TO LRARAM TABLE2187 FF7E A7 2E STA 14,Y STORE $F1 AT $DFCE2188 *2189 * THE FOLLOWING CHECKS TO SEE IF THERE IS A 4K BLK OF2190 * RAM LOCATED AT $C000-$CFFF. IF NONE THERE IT LOCATES2191 * THE NEXT LOWER 4K BLK AN XLATES ITS ADDR SO IT2192 * LOGICALLY RESPONDS TO THE ADDRESS $C---.2193 *2194 *2195 FF80 86 0C LDA #$0C PRESET NUMBER HEX "C"2196 FF82 E6 A6 FINDC LDB A,Y GET ENTRY FROM LRARAM TABLE2197 FF84 26 05 BNE FOUNDC BRANCH IF RAM THIS PHYSICAL ADDR.2198 FF86 4A DECA ELSE POINT 4K LOWER2199 FF87 2A F9 BPL FINDC GO TRY AGAIN2200 FF89 20 14 BRA XFERTF2201 FF8B 6F A6 FOUNDC CLR A,Y CLR XLATION FACTOR OF 4K BLOCK FOUND2202 FF8D E7 2C STB $C,Y GIVE IT XLATION FACTOR MOVING IT TO $C---2203 *2204 * THE FOLLOWING CODE ADJUSTS THE TRANSLATION2205 * FACTORS SUCH THAT ALL REMAINING RAM WILL2206 * RESPOND TO A CONTIGUOUS BLOCK OF LOGICAL2207 * ADDRESSES FROM $0000 AND UP....2208 *2209 FF8F 4F CLRA START AT ZERO2210 FF90 1F 21 TFR Y,X START POINTER "X" START OF "LRARAM" TABLE.2211 FF92 E6 A6 COMPRS LDB A,Y GET ENTRY FROM "LRARAM" TABLE2212 FF94 27 04 BEQ PNTNXT IF IT'S ZER0 SKIP2213 FF96 6F A6 CLR A,Y ELSE ERASE FROM TABLE2214 FF98 E7 80 STB ,X+ AND ENTER ABOVE LAST ENTRY- BUMP2215 FF9A 4C PNTNXT INCA GET OFFSET TO NEXT ENTRY2216 FF9B 81 0C CMPA #$0C LAST ENTRY YET ?2217 FF9D 2D F3 BLT COMPRS2218 *2219 * THE FOLLOWING CODE TRANSFER THE TRANSLATION2220 * FACTORS FROM THE LRARAM TABLE TO IC11 ON2221 * THE MP-09 CPU CARD.2222 *2223 FF9F 8E FF F0 XFERTF LDX #IC11 POINT TO DAT RAM IC112224 FFA2 C6 10 LDB #$10 GET NO. OF BYTES TO MOVE2225 FFA4 A6 A0 FETCH LDA ,Y+ GET BYTE AND POINT TO NEXT2226 FFA6 A7 80 STA ,X+ POKE XLATION FACTOR IN IC112227 FFA8 5A DECB SUB 1 FROM BYTES TO MOVE2228 FFA9 26 F9 BNE FETCH CONTINUE UNTIL 16 MOVED2229 *2230 ELSE2231 LRA RTS2232 START LDS #STACK INITIALIZE STACK POINTER2233 CLRB2234 ENDIF DATOPT2234 ENDIF DATOPT2235 *2236 FFAB 53 COMB SET "B" NON-ZERO2237 FFAC F7 DF E2 STB ECHO TURN ON ECHO FLAG2238 FFAF 16 F8 62 LBRA MONITOR INITIALIZATION IS COMPLETE2239 *2240 ** INTERRUPT JUMP VECTORS2241 *2242 FFB2 6E 9F DF C0 V1 JMP [STACK]2243 FFB6 6E 9F DF C4 V2 JMP [SWI2]2244 FFBA 6E 9F DF C6 V3 JMP [FIRQ]2245 FFBE 6E 9F DF C8 V4 JMP [IRQ]2246 FFC2 6E 9F DF CA V5 JMP [SWI]2247 *2248 * SWI3 ENTRY POINT2249 *2250 FFC6 1F 43 SWI3E TFR S,U2251 FFC8 AE 4A LDX 10,U *$FFC82252 FFCA E6 80 LDB ,X+2253 FFCC AF 4A STX 10,U2254 FFCE 4F CLRA2255 FFCF 58 ASLB2256 FFD0 49 ROLA2257 FFD1 BE DF CC LDX SVCVO2258 FFD4 8C FF FF CMPX #$FFFF2259 FFD7 27 0F BEQ SWI3Z2260 FFD9 30 8B LEAX D,X2261 FFDB BC DF CE CMPX SVCVL2262 FFDE 22 08 BHI SWI3Z2263 FFE0 34 10 PSHS X2264 FFE2 EC C4 LDD ,U2265 FFE4 AE 44 LDX 4,U2266 FFE6 6E F1 JMP [,S++]2267 FFE8 37 1F SWI3Z PULU A,B,X,CC,DP2268 FFEA EE 42 LDU 2,U2269 FFEC 6E 9F DF C2 JMP [SWI3]2270 *2271 * 6809 VECTORS2272 *2273 FFF0 ORG $FFF02274 FFF0 FF B2 FDB V1 USER-V2275 FFF2 FF C6 FDB SWI3E SWI3-V2276 FFF4 FF B6 FDB V2 SWI2-V2277 FFF6 FF BA FDB V3 FIRQ-V2278 FFF8 FF BE FDB V4 IRQ-V2279 FFFA FF C2 FDB V5 SWI-V2280 FFFC FF B2 FDB V1 NMI-V2281 FFFE FF 00 FDB START RESTART-V0004 END START0005 ENDProgram + Init Data = 1826 bytesError count = 0
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