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Assembler release DWC_2.0 version 2.11May 6, 2004 (c) Motorola (free ware)0001 NAM SYS09BUG FOR ADS68090000 INCLUDE "opt_ads.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 00FF ADSOPT EQU $FF ADS6809 & DG640 VIDEO DISPAY0016 *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 00FF DG640OPT EQU $FF DG640 VDU AT $E8000072 *RTCOPT EQU $FF REAL TIME CLOCK0073 00FF PRTOPT EQU $FF PRINTER DRIVERS0074 00FF MFDCOPT EQU $FF MINIFLOPPY 5.25" DISK BOOT0075 ENDIF ADSOPT0076 *0077 IFD SWTOPT0078 *0079 * SOUTH WEST TECHNICAL PRODUCTS COMPUTER0080 *0081 ACIAOPT EQU $FF ACIA AT PORT 00082 DMAFOPT EQU $FF DMAF2 8" FLOPPY DISK BOOT0083 MFDCOPT EQU $FF MINIFLOPPY 5.25" DISK BOOT0084 DATOPT EQU $FF DYNAMIC ADDRESS TRANSLATION0085 ENDIF0085 ENDIF0086 *0087 IFD ACIAOPT0088 *0089 ***************************************************0090 * SERIAL PORT *0091 ***************************************************0092 *0093 ** ACIA SITS ON PORT 00094 *0095 ACIAS EQU MONIO+$00 CONTROL PORT0096 *0097 ENDIF ACIAOPT0097 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 E400 ACIAS EQU MONIO+$400 CONTROL PORT0350 *0351 ENDIF ADSOPT0352 IFD PRTOPT0353 *0354 ***************************************************0355 * PRINTER INTERFACE *0356 ***************************************************0357 *0358 E404 PADATA EQU MONIO+$4040359 E405 PACTRL EQU MONIO+$4050360 E406 PBDATA EQU MONIO+$4060361 E407 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 0080 PBUSY EQU $80 I/P0369 0040 PEMPTY EQU $40 I/P0370 0020 SELECT EQU $20 I/P0371 0010 PERROR EQU $10 I/P0372 0004 PRESET EQU %00000100 O/P PA3 = 00373 0008 AUTOFD EQU %00001000 O/P PA2 = 00374 000C DIRMSK EQU %000011000375 ENDIF PRTOPT0376 IFD DG640OPT0377 *0378 ***************************************************0379 * DG640 MEMORY MAPPED DISPLAY DRIVER VARIABLES *0380 ***************************************************0381 *0382 ** VIDEO DISPLAY DEFINITIONS0383 *0384 E800 SCREEN EQU MONIO+$0800 START OF SCREEN MEMORY0385 0040 LINLEN EQU 64 LENGTH OF A LINE0386 0010 NUMLIN EQU 16 NUMBER OF LINES0387 0400 SCNLEN EQU $400 LENGTH OF SCREEN0388 ENDIF DG640OPT0389 *0390 IFD DMAFOPT0391 *0392 ***************************************************0393 * DMAF2 8" DRIVE *0394 ***************************************************0395 *0396 ADDREG EQU $F000 ADDRESS REGISTER0397 CNTREG EQU $F002 COUNT REGISTER0398 CCREG EQU $F010 CHANNEL CONTROL REGISTER0399 PRIREG EQU $F014 DMA PRIORITY REGISTER0400 AAAREG EQU $F015 ???0401 BBBREG EQU $F016 ???0402 COMREG EQU $F020 1791 COMMAND REGISTER0403 SECREG EQU $F022 SECTOR REGISTER0404 DRVREG EQU $F024 DRIVE SELECT LATCH0405 CCCREG EQU $F040 ???0406 ENDIF DMAFOPT0406 ENDIF DMAFOPT0407 IFD DATOPT0408 **************************************************0409 * DYNAMIC ADDRESS TRANSLATION REGISTERS *0410 **************************************************0411 *0412 IC11 EQU $FFF0 DAT RAM CHIP0413 TSTPAT EQU $55AA TEST PATTERN0414 ENDIF DATOPT0414 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 LRARAM RMB 16 LRA ADDRESSES0099 ENDIF DATOPT0099 ENDIF DATOPT0100 DFD0 CPORT RMB 2 RE-VECTORABLE CONTROL PORT0101 DFD2 ECHO RMB 1 ECHO FLAG0102 DFD3 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 DFEB COLADX RMB 1 CURSOR COLUMN0129 DFEC ROWADX RMB 1 CURSOR ROW0130 *************************************************0131 DFED CURSOR RMB 2 ABSOLUTE SCREEN ADDRESS0132 DFEF NEWROW RMB 1 NEW ROW TEMP FOR ESCAPE0133 DFF0 ESCFLG RMB 1 ESCAPE SEQUENCE ACTIVE0134 ENDIF DG640OPT0135 *0136 *0137 ***************************************************0138 * START OF ROM *0139 ***************************************************0140 *0141 F800 ORG MONROM0142 F800 F8 22 FDB MONITOR0143 F802 F8 56 FDB NEXTCMD0144 F804 FC 66 FDB INCH0145 F806 FC 60 FDB INCHE0146 F808 FC 75 FDB INCHEK0147 F80A FC 83 FDB OUTCH0148 F80C FB 58 FDB PDATA0149 F80E FA E7 FDB PCRLF0150 F810 FA E3 FDB PSTRNG0151 F812 FF 06 FDB LRA0152 *0153 IFD ADSOPT0154 F814 FE 47 FDB PCHK CHECK FOR PRINTER INPUT0155 F816 FE 09 FDB PINIZ INITIATE PRINTER0156 F818 FE 33 FDB POUTCH OUTPUT CH. TO PRINTER0157 F81A FC AB FDB VINIZ0158 F81C FC C0 FDB VOUTCH0159 F81E FC 98 FDB ACINIZ0160 F820 FC 85 FDB AOUTCH0161 ENDIF ADSOPT0162 *0163 * MONITOR0164 *0165 * VECTOR ADDRESS STRING IS.....0166 * $F8A1-$F8A1-$F8A1-$F8A1-$F8A1-$FAB0-$FFFF-$FFFF0167 *0168 F822 8E FE 81 MONITOR LDX #RAMVEC POINT TO VECTOR ADDR. STRING0169 F825 10 8E DF C0 LDY #STACK POINT TO RAM VECTOR LOCATION0170 F829 C6 10 LDB #$10 BYTES TO MOVE = 160171 F82B A6 80 LOOPA LDA ,X+ GET VECTOR BYTE0172 F82D A7 A0 STA ,Y+ PUT VECTORS IN RAM / $DFC0-$DFCF0173 F82F 5A DECB SUBTRACT 1 FROM NUMBER OF BYTES TO MOVE0174 F830 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 $DFCE SVC-VL0185 *0186 F832 8E E4 00 LDX #ACIAS0187 F835 BF DF D0 STX CPORT STORE ADDR. IN RAM0188 F838 17 01 42 LBSR XBKPNT CLEAR OUTSTANDING BREAKPOINTS0189 F83B C6 0C LDB #12 CLEAR 12 BYTES ON STACK0190 F83D 6F E2 CLRSTK CLR ,-S0191 F83F 5A DECB0192 F840 26 FB BNE CLRSTK0193 F842 30 8C DD LEAX MONITOR,PCR SET PC TO SBUG-E ENTRY0194 F845 AF 6A STX 10,S ON STACK0195 F847 86 D0 LDA #$D0 PRESET CONDITION CODES ON STACK0196 F849 A7 E4 STA ,S0197 F84B 1F 43 TFR S,U0198 F84D 17 04 46 LBSR IOINIZ INITIALIZE CONTROL PORT0199 F850 8E FE 91 LDX #MSG1 POINT TO MONITOR MESSAGE0200 F853 17 03 02 LBSR PDATA PRINT MSG0201 *0202 IFD DATOPT0203 LDX #LRARAM POINT TO LRA RAM STORAGE AREA0204 CLRA START TOTAL AT ZERO0205 LDB #13 TOTAL UP ALL ACTIVE RAM MEMORY0206 FNDREL TST B,X TEST FOR RAM AT NEXT LOC.0207 BEQ RELPAS IF NO RAM GO TO NEXT LOC.0208 ADDA #4 ELSE ADD 4K TO TOTAL0209 DAA ADJ. TOTAL FOR DECIMAL0210 RELPAS DECB SUB. 1 FROM LOCS. TO TEST0211 BPL FNDREL PRINT TOTAL OF RAM0212 LBSR OUT2H OUTPUT HEX BYTE AS ASCII0213 LDX #MSG2 POINT TO MSG 'K' CR/LF + 3 NULS0214 LBSR PDATA PRINT MSG0215 ENDIF DATOPT0215 ENDIF DATOPT0216 *0217 IFD TRAOPT0218 LBSR TRAINZ0219 ENDIF TRAOPT0219 ENDIF TRAOPT0220 *0221 ***** NEXTCMD *****0222 *0223 F856 8E FE BA NEXTCMD LDX #MSG3 POINT TO MSG ">"0224 F859 17 02 87 LBSR PSTRNG PRINT MSG0225 F85C 17 04 07 LBSR INCH GET ONE CHAR. FROM TERMINAL0226 F85F 84 7F ANDA #$7F STRIP PARITY FROM CHAR.0227 F861 81 0D CMPA #$0D IS IT CARRIAGE RETURN ?0228 F863 27 F1 BEQ NEXTCMD IF CR THEN GET ANOTHER CHAR.0229 F865 1F 89 TFR A,B PUT CHAR. IN "B" ACCUM.0230 F867 81 20 CMPA #$20 IS IT CONTROL OR DATA CHAR ?0231 F869 2C 09 BGE PRTCMD IF CMD CHAR IS DATA, PRNT IT0232 F86B 86 5E LDA #'^ ELSE CNTRL CHAR CMD SO...0233 F86D 17 04 13 LBSR OUTCH PRINT "^"0234 F870 1F 98 TFR B,A RECALL CNTRL CMD CHAR0235 F872 8B 40 ADDA #$40 CONVERT IT TO ASCII LETTER0236 F874 17 04 0C PRTCMD LBSR OUTCH PRNT CMD CHAR0237 F877 17 04 07 LBSR OUT1S PRNT SPACE0238 F87A C1 60 CMPB #$600239 F87C 2F 02 BLE NXTCH00240 F87E C0 20 SUBB #$200241 *0242 ***** DO TABLE LOOKUP *****0243 * FOR COMMAND FUNCTIONS0244 *0245 F880 8E FE 4B NXTCH0 LDX #JMPTAB POINT TO JUMP TABLE0246 F883 E1 80 NXTCHR CMPB ,X+ DOES COMMAND MATCH TABLE ENTRY ?0247 F885 27 0F BEQ JMPCMD BRANCH IF MATCH FOUND0248 F887 30 02 LEAX 2,X POINT TO NEXT ENTRY IN TABLE0249 F889 8C FE 81 CMPX #TABEND REACHED END OF TABLE YET ?0250 F88C 26 F5 BNE NXTCHR IF NOT END, CHECK NEXT ENTRY0251 F88E 8E FE BC LDX #MSG4 POINT TO MSG "WHAT?"0252 F891 17 02 C4 LBSR PDATA PRINT MSG0253 F894 20 C0 BRA NEXTCMD IF NO MATCH, PRMPT FOR NEW CMD0254 F896 AD 94 JMPCMD JSR [,X] JUMP TO COMMAND ROUTINE0255 F898 20 BC BRA NEXTCMD PROMPT FOR NEW COMMAND0256 *0257 * "G" GO OR CONTINUE0258 *0259 F89A 1F 34 GO TFR U,S0260 F89C 3B RTI RTI0261 *0262 ***** "M" MEMORY EXAMINE AND CHANGE *****0263 *0264 F89D 17 03 3F MEMCHG LBSR IN1ADR INPUT ADDRESS0265 F8A0 29 2D BVS CHRTN IF NOT HEX, RETURN0266 F8A2 1F 12 TFR X,Y SAVE ADDR IN "Y"0267 F8A4 8E FE C2 MEMC2 LDX #MSG5 POINT TO MSG " - "0268 F8A7 17 02 39 LBSR PSTRNG PRINT MSG0269 F8AA 1F 21 TFR Y,X FETCH ADDRESS0270 F8AC 17 03 79 LBSR OUT4H PRINT ADDR IN HEX0271 F8AF 17 03 CF LBSR OUT1S OUTPUT SPACE0272 F8B2 A6 A4 LDA ,Y GET CONTENTS OF CURRENT ADDR.0273 F8B4 17 03 79 LBSR OUT2H OUTPUT CONTENTS IN ASCII0274 F8B7 17 03 C7 LBSR OUT1S OUTPUT SPACE0275 F8BA 17 03 32 LBSR BYTE LOOP WAITING FOR OPERATOR INPUT0276 F8BD 28 11 BVC CHANGE IF VALID HEX GO CHANGE MEM. LOC.0277 F8BF 81 08 CMPA #8 IS IT A BACKSPACE (CNTRL H)?0278 F8C1 27 E1 BEQ MEMC2 PROMPT OPERATOR AGAIN0279 F8C3 81 18 CMPA #$18 IS IT A CANCEL (CNTRL X)?0280 F8C5 27 DD BEQ MEMC2 PROMPT OPERATOR AGAIN0281 F8C7 81 5E CMPA #'^ IS IT AN UP ARROW?0282 F8C9 27 17 BEQ BACK DISPLAY PREVIOUS BYTE0283 F8CB 81 0D CMPA #$D IS IT A CR?0284 F8CD 26 0F BNE FORWRD DISPLAY NEXT BYTE0285 F8CF 39 CHRTN RTS EXIT ROUTINE0286 *0287 *0288 F8D0 A7 A4 CHANGE STA ,Y CHANGE BYTE IN MEMORY0289 F8D2 A1 A4 CMPA ,Y DID MEMORY BYTE CHANGE?0290 F8D4 27 08 BEQ FORWRD $F9720291 F8D6 17 03 A8 LBSR OUT1S OUTPUT SPACE0292 F8D9 86 3F LDA #'? LOAD QUESTION MARK0293 F8DB 17 03 A5 LBSR OUTCH PRINT IT0294 F8DE 31 21 FORWRD LEAY 1,Y POINT TO NEXT HIGHER MEM LOCATION0295 F8E0 20 C2 BRA MEMC2 PRINT LOCATION & CONTENTS0296 F8E2 31 3F BACK LEAY -1,Y POINT TO LAST MEM LOCATION0297 F8E4 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 F8E6 17 02 76 DISSTK LBSR PRTSP PRINT CURRENT STACK POINTER0304 F8E9 1F 32 TFR U,Y0305 F8EB 8E DF C0 LDX #STACK LOAD INTERNAL STACK AS UPPER LIMIT0306 F8EE 30 1F LEAX -1,X POINT TO CURRENT STACK0307 F8F0 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 F8F2 17 02 DF MEMDUMP LBSR IN2ADR INPUT ADDRESS BOUNDRIES0315 F8F5 29 06 BVS EDPRTN NEW COMMAND IF ILLEGAL HEX0316 F8F7 34 20 MDUMP1 PSHS Y COMPARE LOWER TO UPPER BOUNDS0317 F8F9 AC E1 CMPX ,S++ LOWER BOUNDS > UPPER BOUNDS?0318 F8FB 24 01 BCC AJDUMP IF NOT, DUMP HEX AND ASCII0319 F8FD 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 F8FE 1F 10 AJDUMP TFR X,D GET UPPER ADDR IN D-REG0334 F900 C3 00 10 ADDD #$10 ADD 16 TO UPPER ADDRESS0335 F903 C4 F0 ANDB #$F0 MASK TO EVEN 16 BYTE BOUNDRY0336 F905 34 06 PSHS A,B SAVE ON STACK AS UPPER DUMP LIMIT0337 F907 1F 20 TFR Y,D $F9A5 GET LOWER ADDRESS IN D-REG0338 F909 C4 F0 ANDB #$F0 MASK TO EVEN 16 BYTE BOUNDRY0339 F90B 1F 01 TFR D,X PUT IN X-REG AS LOWER DUMP LIMIT0340 F90D AC E4 NXTLIN CMPX ,S COMPARE LOWER TO UPPER LIMIT0341 F90F 27 05 BEQ SKPDMP IF EQUAL SKIP HEX-ASCII DUMP0342 F911 17 03 61 LBSR INCHEK CHECK FOR INPUT FROM KEYBOARD0343 F914 27 03 BEQ EDUMP0344 F916 32 62 SKPDMP LEAS 2,S READJUST STACK IF NOT DUMPING0345 F918 39 RTS ;0346 *0347 * PRINT 16 HEX BYTES FOLLOWED BY 16 ASCII CHARACTERS0348 * FOR EACH LINE THROUGHOUT ADDRESS LIMITS.0349 *0350 F919 34 10 EDUMP PSHS X PUSH LOWER ADDR LIMIT ON STACK0351 F91B 8E FE C2 LDX #MSG5 POINT TO MSG " - "0352 F91E 17 01 C2 LBSR PSTRNG PRINT MSG0353 F921 AE E4 LDX ,S LOAD LOWER ADDR FROM TOP OF STACK0354 F923 17 03 02 LBSR OUT4H PRINT THE ADDRESS0355 F926 17 03 56 LBSR OUT2S 2 SPACES0356 F929 C6 10 LDB #$10 LOAD COUNT OF 16 BYTES TO DUMP0357 F92B A6 80 ELOOP LDA ,X+ GET FROM MEMORY HEX BYTE TO PRINT0358 F92D 17 03 00 LBSR OUT2H OUTPUT HEX BYTE AS ASCII0359 F930 17 03 4E LBSR OUT1S OUTPUT SPACE0360 F933 5A DECB $F9D1 DECREMENT BYTE COUNT0361 F934 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 F936 17 03 46 LBSR OUT2S 2 SPACES0367 F939 AE E1 LDX ,S++ GET LOW LIMIT FRM STACK - ADJ STACK0368 F93B C6 10 LDB #$10 SET ASCII CHAR TO PRINT = 160369 F93D A6 80 EDPASC LDA ,X+ GET CHARACTER FROM MEMORY0370 F93F 81 20 CMPA #$20 IF LESS THAN $20, NON-PRINTABLE?0371 F941 25 04 BCS PERIOD IF SO, PRINT PERIOD INSTEAD0372 F943 81 7E CMPA #$7E IS IT VALID ASCII?0373 F945 23 02 BLS PRASC IF SO PRINT IT0374 F947 86 2E PERIOD LDA #'. LOAD A PERIOD (.)0375 F949 17 03 37 PRASC LBSR OUTCH PRINT ASCII CHARACTER0376 F94C 5A DECB DECREMENT COUNT0377 F94D 26 EE BNE EDPASC0378 F94F 20 BC BRA NXTLIN0379 *0380 ***** "B" SET BREAKPOINT *****0381 *0382 F951 17 02 8B BRKPNT LBSR IN1ADR GET BREAKPOINT ADDRESS0383 F954 29 1E BVS EXITBP EXIT IF INVALID HEX ADDR.0384 F956 8C DF C0 CMPX #STACK ADDRESS ILLEGAL IF >=$DFC00385 F959 24 1A BCC BPERR IF ERROR PRINT (?), EXIT0386 F95B 34 10 PSHS X $FA82 PUSH BP ADDRESS ON STACK0387 F95D 8E FF FF LDX #$FFFF LOAD DUMMY ADDR TO TEST BP TABLE0388 F960 8D 55 BSR BPTEST TEST BP TABLE FOR FREE SPACE0389 F962 35 10 PULS X POP BP ADDRESS FROM STACK0390 F964 27 0F BEQ BPERR (Z) SET, OUT OF BP TABLE SPACE0391 F966 A6 84 LDA ,X GET DATA AT BREAKPOINT ADDRESS0392 F968 81 3F CMPA #$3F IS IT A SWI?0393 F96A 27 09 BEQ BPERR IF SWI ALREADY, INDICATE ERROR0394 F96C A7 A0 STA ,Y+ SAVE DATA BYTE IN BP TABLE0395 F96E AF A4 STX ,Y SAVE BP ADDRESS IN BP TABLE0396 F970 86 3F LDA #$3F LOAD A SWI ($3F)0397 F972 A7 84 STA ,X SAVE SWI AT BREAKPOINT ADDRESS0398 F974 39 EXITBP RTS ;0399 *0400 * INDICATE ERROR SETTING BREAKPOINT0401 *0402 F975 17 03 09 BPERR LBSR OUT1S OUTPUT SPACE0403 F978 86 3F LDA #'? LOAD (?), INDICATE BREAKPOINT ERROR0404 F97A 16 03 06 LBRA OUTCH PRINT "?"0405 *0406 *** "X" CLEAR OUTSTANDING BREAKPOINTS ***0407 *0408 F97D 10 8E DF D3 XBKPNT LDY #BPTBL POINT TO BREAKPOINT TABLE0409 F981 C6 08 LDB #8 LOAD BREAKPOINT COUNTER0410 F983 8D 18 XBPLP BSR RPLSWI REMOVE USED ENTRY IN BP TABLE0411 F985 5A DECB $FAAC DECREMENT BP COUNTER0412 F986 26 FB BNE XBPLP END OF BREAKPOINT TABLE?0413 F988 39 RTS0414 *0415 ***** SWI ENTRY POINT *****0416 *0417 F989 1F 43 SWIE TFR S,U TRANSFER STACK TO USER POINTER0418 F98B AE 4A LDX 10,U LOAD PC FROM STACK INTO X-REG0419 F98D 30 1F LEAX -1,X ADJUST ADDR DOWN 1 BYTE.0420 F98F 8D 26 BSR BPTEST FIND BREAKPOINT IN BP TABLE0421 F991 27 04 BEQ REGPR IF FOUND, REPLACE DATA AT BP ADDR0422 F993 AF 4A STX 10,U SAVE BREAKPOINT ADDR IN STACK0423 F995 8D 06 BSR RPLSWI GO REPLACE SWI WITH ORIGINAL DATA0424 F997 17 02 1C REGPR LBSR REGSTR GO PRINT REGISTERS0425 *0426 IFD TRAOPT0427 LDX #00428 STX TRACNT0429 ENDIF TRAOPT0429 ENDIF TRAOPT0430 *0431 F99A 16 FE B9 LBRA NEXTCMD GET NEXT COMMAND0432 *0433 F99D AE 21 RPLSWI LDX 1,Y LOAD BP ADDRESS FROM BP TABLE0434 F99F 8C DF C0 CMPX #STACK COMPARE TO TOP AVAILABLE USER MEMORY0435 F9A2 24 0A BCC FFSTBL GO RESET TABLE ENTRY TO $FF'S0436 F9A4 A6 84 LDA ,X GET DATA FROM BP ADDRESS0437 F9A6 81 3F CMPA #$3F IS IT SWI?0438 F9A8 26 04 BNE FFSTBL IF NOT, RESET TABLE ENTRY TO $FF'S0439 F9AA A6 A4 LDA ,Y GET ORIGINAL DATA FROM BP TABLE0440 F9AC A7 84 STA ,X $FAD3 RESTORE DATA AT BP ADDRESS0441 F9AE 86 FF FFSTBL LDA #$FF LOAD $FF IN A-ACC0442 F9B0 A7 A0 STA ,Y+ RESET BREAKPOINT TABLE DATA TO $FF'S0443 F9B2 A7 A0 STA ,Y+ RESET BREAKPOINT TABLE ADDR TO $FF'S0444 F9B4 A7 A0 STA ,Y+0445 F9B6 39 RTS0446 *0447 ** SEARCH BREAKPOINT TABLE FOR MATCH **0448 *0449 F9B7 10 8E DF D3 BPTEST LDY #BPTBL POINT TO BREAKPOINT TABLE0450 F9BB C6 08 LDB #8 LOAD BREAKPOINT COUNTER0451 F9BD A6 A0 FNDBP LDA ,Y+ LOAD DATA BYTE0452 F9BF AC A1 CMPX ,Y++ COMPARE ADDRESS, IS IT SAME?0453 F9C1 27 04 BEQ BPADJ IF SO, ADJUST POINTER FOR TABLE ENTRY0454 F9C3 5A DECB IF NOT, DECREMENT BREAKPOINT COUNTER0455 F9C4 26 F7 BNE FNDBP AND LOOK FOR NEXT POSSIBLE MATCH0456 F9C6 39 RTS ;0457 *0458 *0459 F9C7 31 3D BPADJ LEAY -3,Y MOVE POINTER TO BEGIN OF BP ENTRY0460 F9C9 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 F9CA 7D E0 18 MINBOOT TST CMDFDC0559 F9CD 7F E0 14 CLR DRVFDC0560 F9D0 8E 00 00 LDX #$00000561 F9D3 30 01 LOOP LEAX $01,X0562 F9D5 8C 00 00 CMPX #$00000563 F9D8 26 F9 BNE LOOP0564 F9DA 86 0F LDA #$0F0565 F9DC B7 E0 18 STA CMDFDC0566 F9DF 8D 37 BSR DELAY0567 F9E1 F6 E0 18 LOOP1 LDB CMDFDC0568 F9E4 C5 01 BITB #$010569 F9E6 26 F9 BNE LOOP10570 F9E8 86 01 LDA #$010571 F9EA B7 E0 1A STA SECFDC0572 F9ED 8D 29 BSR DELAY0573 F9EF 86 8C LDA #$8C0574 F9F1 B7 E0 18 STA CMDFDC0575 F9F4 8D 22 BSR DELAY0576 F9F6 8E C0 00 LDX #$C0000577 F9F9 20 09 BRA LOOP30578 F9FB C5 02 LOOP2 BITB #$020579 F9FD 27 05 BEQ LOOP30580 F9FF B6 E0 1B LDA DATFDC0581 FA02 A7 80 STA ,X+0582 FA04 F6 E0 18 LOOP3 LDB CMDFDC0583 FA07 C5 01 BITB #$010584 FA09 26 F0 BNE LOOP20585 FA0B C5 2C BITB #$2C0586 FA0D 27 01 BEQ LOOP40587 FA0F 39 RTS0588 *0589 FA10 8E C0 00 LOOP4 LDX #$C0000590 FA13 AF 4A STX $0A,U0591 FA15 1F 34 TFR U,S0592 FA17 3B RTI0593 *0594 FA18 C6 04 DELAY LDB #$040595 FA1A 5A LOOP5 DECB0596 FA1B 26 FD BNE LOOP50597 FA1D 39 RTS0598 ENDIF MFDCOPT0599 *0600 IFD DMAFOPT0601 *0602 *** "D" DISK BOOT FOR DMAF2 ***0603 *0604 DBOOT LDA #$DE0605 STA DRVREG0606 LDA #$FF0607 STA PRIREG $FAF80608 STA CCREG0609 STA AAAREG0610 STA BBBREG0611 TST CCREG0612 LDA #$D80613 STA COMREG0614 LBSR DLY0615 DBOOT0 LDA COMREG0616 BMI DBOOT00617 LDA #$090618 STA COMREG0619 LBSR DLY0620 *0621 DISKWT LDA COMREG FETCH DRIVE STATUS0622 BITA #1 TEST BUSY BIT0623 BNE DISKWT LOOP UNTIL NOT BUSY0624 *0625 BITA #$100626 BNE DBOOT0627 *0628 LDX #$C000 LOGICAL ADDR. = $C0000629 BSR LRA GET 20 BIT PHYSICAL ADDR. OF LOG. ADDR.0630 ORA #$100631 STA CCCREG0632 TFR X,D0633 COMA ;0634 COMB ;0635 STD ADDREG0636 LDX #$FEFF LOAD DMA BYTE COUNT = $1000637 STX CNTREG STORE IN COUNT REGISTER0638 LDA #$FF LOAD THE CHANNEL REGISTER0639 STA CCREG0640 LDA #$FE SET CHANNEL 00641 STA PRIREG0642 LDA #1 SET SECTOR TO "1"0643 STA SECREG ISSUE COMMAND0644 LDA #$8C SET SINGLE SECTOR READ0645 STA COMREG ISSUE COMMAND0646 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 CLRB ;0656 DBOOT1 PSHS B $FB550657 CLRB ;0658 DBOOT2 TST CCREG0659 BPL DBOOT30660 DECB ;0661 BNE DBOOT20662 PULS B0663 DECB0664 BNE DBOOT10665 BRA DBOOT0666 DBOOT3 PULS B0667 LDA COMREG0668 BITA #$1C0669 BEQ DBOOT40670 RTS ;0671 *0672 *0673 DBOOT4 LDB #$DE0674 STB DRVREG0675 LDX #$C0000676 STX 10,U0677 TFR U,S $FB7B0678 RTI ;0679 ENDIF DMAFOPT0679 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 LRA PSHS A,B,X,Y PUSH REGISTERS ON STACK0875 LDA 2,S GET MSB LOGICAL ADDR FRM X REG ON STACK0876 LSRA ;0877 LSRA ADJ FOR INDEXED INTO0878 LSRA CORRESPONDING LOCATION0879 LSRA IN LRA TABLE0880 LDY #LRARAM LOAD LRA TABLE BASE ADDRESS0881 LDB A,Y GET PHYSICAL ADDR. DATA FROM LRA TABLE0882 LSRB ADJ. REAL ADDR. TO REFLECT EXTENDED0883 LSRB PHYSICAL ADDRESS.0884 LSRB EXTENDED MS 4-BITS ARE RETURNED0885 LSRB IN THE "A" ACCUMULATOR0886 STB ,S MS 4 BITS IN A ACCUM. STORED ON STACK0887 LDB A,Y LOAD REAL ADDRESS DATA FROM LRA TABLE0888 COMB COMP TO ADJ FOR PHYSICAL ADDR. IN X REG0889 ASLB ADJ DATA FOR RELOCATION IN X REG0890 ASLB ;0891 ASLB $FB970892 ASLB ;0893 LDA 2,S GET MS BYTE OF LOGICAL ADDR.0894 ANDA #$0F MASK MS NIBBLE OF LOGICAL ADDRESS0895 STA 2,S SAVE IT IN X REG ON STACK0896 ORB 2,S SET MS BYTE IN X REG TO ADJ PHY ADDR.0897 *0898 * PLUS LS NIBBLE OF LOGICAL ADDRESS0899 STB 2,S SAVE AS LS 16 BITS OF PHY ADDR IN X REG0900 * ON STACK0901 PULS A,B,X,Y,PC POP REGS. FROM STACK0902 ENDIF DATOPT0902 ENDIF DATOPT0903 *0904 * DELAY LOOP0905 *0906 FA1E 34 04 DLY PSHS B SAVE CONTENTS OF "B"0907 FA20 C6 20 LDB #$20 GET LOOP DELAY VALUE0908 FA22 5A SUB1 DECB SUBTRACT ONE FROM VALUE0909 FA23 26 FD BNE SUB1 LOOP UNTIL ZERO0910 FA25 35 84 PULS B,PC RESTORE CONTENTS OF "B"0911 * RTS ;0912 *0913 ***** "L" LOAD MIKBUG TAPE *****0914 *0915 FA27 BD FC 98 LOAD JSR ACINIZ0916 FA2A 86 11 LDA #$11 LOAD 'DC1' CASS. READ ON CODE0917 FA2C 17 02 54 LBSR OUTCH OUTPUT IT TO TERMINAL PORT0918 FA2F 7F DF D2 CLR ECHO TURN OFF ECHO FLAG0919 FA32 17 02 26 LOAD1 LBSR ECHON INPUT 8 BIT BYTE WITH NO ECHO0920 FA35 81 53 LOAD2 CMPA #'S IS IT AN "S", START CHARACTER ?0921 FA37 26 F9 BNE LOAD1 IF NOT, DISCARD AND GET NEXT CHAR.0922 FA39 17 02 1F LBSR ECHON0923 FA3C 81 39 CMPA #'9 IS IT A "9" , END OF FILE CHAR ?0924 FA3E 27 3D BEQ LOAD21 IF SO, EXIT LOAD0925 FA40 81 31 CMPA #'1 IS IT A "1" , FILE LOAD CHAR ?0926 FA42 26 F1 BNE LOAD2 IF NOT, LOOK FOR START CHAR.0927 FA44 17 01 A8 LBSR BYTE INPUT BYTE COUNT0928 FA47 34 02 PSHS A PUSH COUNT ON STACK0929 FA49 29 26 BVS LODERR (V) C-CODE SET, ILLEGAL HEX0930 FA4B 17 01 91 LBSR IN1ADR INPUT LOAD ADDRESS0931 FA4E 29 21 BVS LODERR (V) C-CODE SET, ADDR NOT HEX0932 FA50 34 10 PSHS X PUSH ADDR ON STACK0933 FA52 E6 E0 LDB ,S+ LOAD MSB OF ADDR AS CHECKSUM BYTE0934 FA54 EB E0 ADDB ,S+ ADD LSB OF ADDR TO CHECKSUM0935 FA56 EB E4 ADDB ,S ADD BYTE COUNT BYTE TO CHECKSUM0936 FA58 6A E4 DEC ,S $FC37 DECREMENT BYTE COUNT 2 TO BYPASS0937 FA5A 6A E4 DEC ,S ADDRESS BYTES.0938 FA5C 34 04 LOAD10 PSHS B PUSH CHECKSUM ON STACK0939 FA5E 17 01 8E LBSR BYTE INPUT DATA BYTE (2 HEX CHAR)0940 FA61 35 04 PULS B POP CHECKSUM FROM STACK0941 FA63 29 0C BVS LODERR (V) SET, DATA BYTE NOT HEX0942 FA65 34 02 PSHS A PUSH DATA BYTE ON STACK0943 FA67 EB E0 ADDB ,S+ ADD DATA TO CHECKSUM, AUTO INC STACK0944 FA69 6A E4 DEC ,S DECREMENT BYTE COUNT 10945 FA6B 27 05 BEQ LOAD16 IF BYTE COUNT ZERO, TEST CHECKSUM0946 FA6D A7 80 STA ,X+ SAVE DATA BYTE IN MEMORY0947 FA6F 20 EB BRA LOAD10 GET NEXT DATA BYTE0948 FA71 5F LODERR CLRB ;ERROR CONDITION, ZERO CHECKSUM ;0949 FA72 35 02 LOAD16 PULS A ADJUST STACK (REMOVE BYTE COUNT)0950 FA74 C1 FF CMPB #$FF CHECKSUM OK?0951 FA76 27 BA BEQ LOAD1 IF SO, LOAD NEXT LINE0952 FA78 86 3F LDA #'? LOAD (?) ERROR INDICATOR0953 FA7A 17 02 06 LBSR OUTCH OUTPUT IT TO TERMINAL0954 FA7D 73 DF D2 LOAD21 COM ECHO TURN ECHO ON0955 FA80 86 13 LDA #$13 $FC5F LOAD 'DC3' CASS. READ OFF CODE0956 FA82 16 01 FE LBRA OUTCH OUTPUT IT0957 *0958 ***** "P" PUNCH MIKBUG TAPE *****0959 *0960 FA85 6F E2 PUNCH CLR ,-S CLEAR RESERVED BYTE ON STACK0961 FA87 17 01 4A LBSR IN2ADR GET BEGIN AND END ADDRESS0962 FA8A 34 30 PSHS X,Y SAVE ADDRESSES ON STACK0963 FA8C 29 4D BVS PUNEXT (V) C-CODE SET, EXIT PUNCH0964 FA8E AC 62 CMPX 2,S COMPARE BEGIN TO END ADDR0965 FA90 25 49 BCS PUNEXT IF BEGIN GREATER THAN END, EXIT PUNCH0966 FA92 30 01 LEAX 1,X INCREMENT END ADDRESS0967 FA94 AF E4 STX ,S STORE END ADDR ON STACK0968 FA96 BD FC 98 JSR ACINIZ0969 FA99 86 12 LDA #$12 LOAD 'DC2' PUNCH ON CODE0970 FA9B 17 01 E5 LBSR OUTCH OUTPUT IT TO TERMINAL0971 FA9E EC E4 PUNCH2 LDD ,S LOAD END ADDR IN D-ACC0972 FAA0 A3 62 SUBD 2,S SUBTRACT BEGIN FROM END0973 FAA2 27 06 BEQ PUNCH3 SAME, PUNCH 32 BYTES DEFAULT0974 FAA4 10 83 00 20 CMPD #$20 LESS THAN 32 BYTES?0975 FAA8 23 02 BLS PUNCH4 PUNCH THAT MANY BYTES0976 FAAA C6 20 PUNCH3 LDB #$20 LOAD BYTE COUNT OF 32.0977 FAAC E7 64 PUNCH4 STB 4,S STORE ON STACK AS BYTE COUNT0978 FAAE 8E FF 03 LDX #MSG20 POINT TO MSG "S1"0979 FAB1 17 00 2F LBSR PSTRNG PRINT MSG0980 FAB4 CB 03 ADDB #3 ADD 3 BYTES TO BYTE COUNT0981 FAB6 1F 98 TFR B,A GET BYTE COUNT IN A-ACC TO PUNCH0982 FAB8 17 01 75 LBSR OUT2H OUTPUT BYTE COUNT0983 FABB AE 62 LDX 2,S LOAD BEGIN ADDRESS0984 FABD 17 01 68 LBSR OUT4H PUNCH ADDRESS0985 FAC0 EB 62 ADDB 2,S ADD ADDR MSB TO CHECKSUM0986 FAC2 EB 63 ADDB 3,S ADD ADDR LSB TO CHECKSUM0987 FAC4 EB 84 PUNCHL ADDB ,X ADD DATA BYTE TO CHECKSUM0988 FAC6 A6 80 LDA ,X+ LOAD DATA BYTE TO PUNCH0989 FAC8 17 01 65 LBSR OUT2H OUTPUT DATA BYTE0990 FACB 6A 64 DEC 4,S DECREMENT BYTE COUNT0991 FACD 26 F5 BNE PUNCHL NOT DONE, PUNCH NEXT BYTE0992 FACF 53 COMB 1's COMPLIMENT CHECKSUM BYTE0993 FAD0 1F 98 TFR B,A GET IT IN A-ACC TO PUNCH0994 FAD2 17 01 5B LBSR OUT2H OUTPUT CHECKSUM BYTE0995 FAD5 AF 62 STX 2,S SAVE X-REG IN STACK AS NEW PUNCH ADDR0996 FAD7 AC E4 CMPX ,S COMPARE IT TO END ADDR0997 FAD9 26 C3 BNE PUNCH2 $FCB5 PUNCH NOT DONE, CONT.0998 FADB 86 14 PUNEXT LDA #$14 LOAD 'DC4' PUNCH OFF CODE0999 FADD 17 01 A3 LBSR OUTCH OUTPUT IT1000 FAE0 32 65 LEAS 5,S READJUST STACK POINTER1001 FAE2 39 RTS ;1002 *1003 * PRINT STRING PRECEEDED BY A CR & LF.1004 *1005 FAE3 8D 02 PSTRNG BSR PCRLF PRINT CR/LF1006 FAE5 20 71 BRA PDATA PRINT STRING POINTED TO BY IX1007 *1008 * PCRLF1009 *1010 FAE7 34 10 PCRLF PSHS X SAVE IX1011 FAE9 8E FE B4 LDX #MSG2+1 POINT TO MSG CR/LF + 3 NULS1012 FAEC 17 00 69 LBSR PDATA PRINT MSG1013 FAEF 35 90 PULS X,PC RESTORE IX & RETURN1014 *1015 * LONG BRANCHES TO COMMON ROUTINES1016 *1017 FAF1 16 01 8D JOUT1S LBRA OUT1S1018 FAF4 16 00 F8 JBYTE LBRA BYTE1019 FAF7 16 00 E5 JIN1ADR LBRA IN1ADR1020 *1021 * ALTER "PC" PROGRAM COUNTER1022 *1023 FAFA 17 00 91 ALTRPC LBSR PRTPC $FCF5 PRINT MSG " PC = "1024 FAFD 8D F2 ALTPC1 BSR JOUT1S OUTPUT SPACE1025 FAFF 8D F6 BSR JIN1ADR GET NEW CONTENTS FOR "PC"1026 FB01 29 02 BVS ALTPCD EXIT IF INVALID HEX1027 FB03 AF 4A STX 10,U POKE IN NEW CONTENTS1028 FB05 39 ALTPCD RTS ;1029 *1030 * ALTER "U" USER STACK POINTER1031 *1032 FB06 8D 61 ALTRU BSR PRTUS $FCCA PRINT MSG " US = "1033 FB08 8D E7 BSR JOUT1S OUTPUT SPACE1034 FB0A 8D EB BSR JIN1ADR1035 FB0C 29 02 BVS ALTUD1036 FB0E AF 48 STX 8,U1037 FB10 39 ALTUD RTS ;1038 *1039 * ALTER "Y" INDEX REGISTER1040 *1041 FB11 8D 72 ALTRY BSR PRTIY PRINT MSG " IY = "1042 FB13 8D DC BSR JOUT1S OUTPUT SPACE1043 FB15 8D E0 BSR JIN1ADR1044 FB17 29 02 BVS ALTYD1045 FB19 AF 46 STX 6,U $F8F01046 FB1B 39 ALTYD RTS ;1047 *1048 * ALTER "X" INDEX REGISTER1049 *1050 FB1C 8D 5E ALTRX BSR PRTIX $FCE0 PRINT MSG " IX = "1051 FB1E 8D D1 BSR JOUT1S OUTPUT SPACE1052 FB20 8D D5 BSR JIN1ADR1053 FB22 29 02 BVS ALTXD1054 FB24 AF 44 STX 4,U1055 FB26 39 ALTXD RTS ;1056 *1057 * ALTER "DP" DIRECT PAGE REGISTER1058 *1059 FB27 8D 49 ALTRDP BSR PRTDP $FCD5 PRINT MSG " DP = "1060 FB29 8D C6 BSR JOUT1S OUTPUT SPACE1061 FB2B 8D C7 BSR JBYTE INPUT BYTE (2 HEX CHAR)1062 FB2D 29 02 BVS ALTDPD1063 FB2F A7 43 STA 3,U1064 FB31 39 ALTDPD RTS ;1065 *1066 * ALTER "B" ACCUMULATOR1067 *1068 FB32 8D 6C ALTRB BSR PRTB $FD09 PRINT MSG " B = "1069 FB34 8D BB BSR JOUT1S OUTPUT SPACE1070 FB36 8D BC BSR JBYTE INPUT BYTE (2 HEX CHAR)1071 FB38 29 02 BVS ALTBD1072 FB3A A7 42 STA 2,U1073 FB3C 39 ALTBD RTS $F91C1074 *1075 * ALTER "A" ACCUMULATOR1076 *1077 FB3D 8D 58 ALTRA BSR PRTA $FCFF RINT MSG " A = "1078 FB3F 8D B0 BSR JOUT1S OUTPUT SPACE1079 FB41 8D B1 BSR JBYTE INPUT BYTE (2 HEX CHAR)1080 FB43 29 02 BVS ALTAD1081 FB45 A7 41 STA 1,U1082 FB47 39 ALTAD RTS ;1083 *1084 * ALTER "CC" REGISTER1085 *1086 FB48 8D 5F ALTRCC BSR PRTCC $FD13 PRINT MSG " CC: "1087 FB4A 8D A5 BSR JOUT1S OUTPUT SPACE1088 FB4C 8D A6 BSR JBYTE INPUT BYTE (2 HEX CHAR)1089 FB4E 29 04 BVS ALTCCD1090 FB50 8A 80 ORA #$80 SETS "E" FLAG IN PRINT LIST1091 FB52 A7 C4 STA ,U1092 FB54 39 ALTCCD RTS ;1093 *1094 * PDATA1095 *1096 FB55 17 01 2B PRINT LBSR OUTCH1097 FB58 A6 80 PDATA LDA ,X+ GET 1st CHAR. TO PRINT1098 FB5A 81 04 CMPA #4 IS IT EOT?1099 FB5C 26 F7 BNE PRINT IF NOT EOT PRINT IT1100 FB5E 39 RTS ;1101 *1102 * PRINT REGISTERS1103 *1104 FB5F 8E FE C6 PRTSP LDX #MSG10 POINT TO MSG "SP="1105 FB62 8D F4 BSR PDATA PRINT MSG1106 FB64 1F 31 TFR U,X1107 FB66 16 00 BF JOUT4H LBRA OUT4H1108 *1109 FB69 8E FE D2 PRTUS LDX #MSG12 POINT TO MSG "US="1110 FB6C 8D EA BSR PDATA PRINT MSG1111 FB6E AE 48 LDX 8,U1112 FB70 20 F4 BRA JOUT4H1113 *1114 FB72 8E FE E4 PRTDP LDX #MSG15 POINT TO MSG "DP="1115 FB75 8D E1 BSR PDATA PRINT MSG1116 FB77 A6 43 LDA 3,U1117 FB79 16 00 B4 JOUT2H LBRA OUT2H OUTPUT HEX BYTE AS ASCII1118 *1119 FB7C 8E FE DE PRTIX LDX #MSG14 POINT TO MSG "IX="1120 FB7F 8D D7 BSR PDATA PRINT MSG1121 FB81 AE 44 LDX 4,U $FCE61122 FB83 20 E1 BRA JOUT4H1123 *1124 FB85 8E FE D8 PRTIY LDX #MSG13 POINT TO MSG "IY="1125 FB88 8D CE BSR PDATA PRINT MSG1126 FB8A AE 46 LDX 6,U1127 FB8C 20 D8 BRA JOUT4H1128 *1129 FB8E 8E FE CC PRTPC LDX #MSG11 POINT TO MSG "PC="1130 FB91 8D C5 BSR PDATA PRINT MSG1131 FB93 AE 4A LDX 10,U1132 FB95 20 CF BRA JOUT4H1133 *1134 FB97 8E FE EA PRTA LDX #MSG16 POINT TO MSG "A="1135 FB9A 8D BC BSR PDATA PRINT MSG1136 FB9C A6 41 LDA 1,U1137 FB9E 20 D9 BRA JOUT2H OUTPUT HEX BYTE AS ASCII1138 *1139 FBA0 8E FE EF PRTB LDX #MSG17 POINT TO MSG "B="1140 FBA3 8D B3 BSR PDATA PRINT MSG1141 FBA5 A6 42 LDA 2,U1142 FBA7 20 D0 BRA JOUT2H OUTPUT HEX BYTE AS ASCII1143 *1144 FBA9 8E FE F4 PRTCC LDX #MSG18 POINT TO MSG "CC:"1145 FBAC 8D AA BSR PDATA PRINT MSG1146 FBAE A6 C4 LDA ,U1147 FBB0 8E FE FB LDX #MSG19 POINT TO MSG "EFHINZVC"1148 FBB3 16 00 90 LBRA BIASCI OUTPUT IN BINARY/ASCII FORMAT1149 *1150 * "R" DISPLAY REGISTERS1151 *1152 FBB6 8E FE C2 REGSTR LDX #MSG5 POINT TO MSG " - "1153 FBB9 17 FF 27 LBSR PSTRNG PRINT MSG1154 FBBC 8D A1 BSR PRTSP $FCBF1155 FBBE 8D A9 BSR PRTUS $FCCA1156 FBC0 8D B0 BSR PRTDP $FCD51157 FBC2 8D B8 BSR PRTIX $FCE01158 FBC4 8D BF BSR PRTIY $FCEB1159 FBC6 8E FE C2 LDX #MSG5 POINT TO MSG " - "1160 FBC9 17 FF 17 LBSR PSTRNG PRINT MSG1161 FBCC 8D C0 BSR PRTPC $FCF51162 FBCE 8D C7 BSR PRTA $FCFF1163 FBD0 8D CE BSR PRTB $FD091164 FBD2 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 FBD4 8D 09 IN2ADR BSR IN1ADR GET FIRST ADDRESS1174 FBD6 29 4D BVS NOTHEX EXIT IF NOT VALID HEX1175 FBD8 1F 12 TFR X,Y SAVE FIRST ADDR. IN "IY"1176 FBDA 86 2D LDA #'-1177 FBDC 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 FBDF 8D 0E IN1ADR BSR BYTE INPUT BYTE (2 HEX CHAR)1184 FBE1 29 42 BVS NOTHEX EXIT IF NOT VALID HEX1185 FBE3 1F 01 TFR D,X1186 FBE5 8D 08 BSR BYTE INPUT BYTE (2 HEX CHAR)1187 FBE7 29 3C BVS NOTHEX1188 FBE9 34 10 PSHS X1189 FBEB A7 61 STA 1,S1190 FBED 35 90 PULS X,PC1191 *1192 ***** INPUT BYTE (2 HEX CHAR.) *****1193 *1194 FBEF 8D 11 BYTE BSR INHEX GET HEX LEFT1195 FBF1 29 32 BVS NOTHEX EXIT IF NOT VALID HEX1196 FBF3 48 ASLA ;1197 FBF4 48 ASLA ;1198 FBF5 48 ASLA ; SHIFT INTO LEFT NIBBLE1199 FBF6 48 ASLA ;1200 FBF7 1F 89 TFR A,B PUT HEXL IN "B"1201 FBF9 8D 07 BSR INHEX GET HEX RIGHT1202 FBFB 29 28 BVS NOTHEX EXIT IF NOT VALID HEX1203 FBFD 34 04 PSHS B PUSH HEXL ON STACK1204 FBFF AB E0 ADDA ,S+ ADD HEXL TO HEXR AND ADJ. STK1205 FC01 39 RTS RETURN WITH HEX L&R IN "A"1206 *1207 *1208 FC02 8D 57 INHEX BSR ECHON INPUT ASCII CHAR.1209 FC04 81 30 CMPA #'0 IS IT > OR = "0" ?1210 FC06 25 1D BCS NOTHEX IF LESS IT AIN'T HEX1211 FC08 81 39 CMPA #'9 IS IT < OR = "9" ?1212 FC0A 22 03 BHI INHEXA IF > MAYBE IT'S ALPHA1213 FC0C 80 30 SUBA #$30 ASCII ADJ. NUMERIC1214 FC0E 39 RTS ;1215 *1216 *1217 FC0F 81 41 INHEXA CMPA #'A IS IT > OR = "A"1218 FC11 25 12 BCS NOTHEX IF LESS IT AIN'T HEX1219 FC13 81 46 CMPA #'F IS IT < OR = "F" ?1220 FC15 22 03 BHI INHEXL IF > IT AIN'T HEX1221 FC17 80 37 SUBA #$37 ASCII ADJ. ALPHA1222 FC19 39 RTS ;1223 *1224 FC1A 81 61 INHEXL CMPA #'a IS IT > OR = "a"1225 FC1C 25 07 BCS NOTHEX IF LESS IT AIN'T HEX1226 FC1E 81 66 CMPA #'f IS IT < "f"1227 FC20 22 03 BHI NOTHEX IF > IT AIN'T HEX1228 FC22 80 57 SUBA #$57 ADJUST TO LOWER CASE1229 FC24 39 RTS ;1230 *1231 *1232 FC25 1A 02 NOTHEX ORCC #2 SET (V) FLAG IN C-CODES REGISTER1233 FC27 39 RTS ;1234 *1235 *1236 FC28 34 10 OUT4H PSHS X PUSH X-REG. ON THE STACK1237 FC2A 35 02 PULS A POP MS BYTE OF X-REG INTO A-ACC.1238 FC2C 8D 02 BSR OUTHL OUTPUT HEX LEFT1239 FC2E 35 02 PULS A POP LS BYTE OF X-REG INTO A-ACC.1240 FC30 OUTHL EQU *1241 FC30 34 02 OUT2H PSHS A SAVE IT BACK ON STACK1242 FC32 44 LSRA CONVERT UPPER HEX NIBBLE TO ASCII1243 FC33 44 LSRA ;1244 FC34 44 LSRA ;1245 FC35 44 LSRA ;1246 FC36 8D 04 BSR XASCII PRINT HEX NIBBLE AS ASCII1247 FC38 35 02 OUTHR PULS A CONVERT LOWER HEX NIBBLE TO ASCII1248 FC3A 84 0F ANDA #$0F STRIP LEFT NIBBLE1249 FC3C 8B 30 XASCII ADDA #$30 ASCII ADJ1250 FC3E 81 39 CMPA #$39 IS IT < OR = "9" ?1251 FC40 2F 02 BLE OUTC IF LESS, OUTPUT IT1252 FC42 8B 07 ADDA #7 IF > MAKE ASCII LETTER1253 FC44 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 FC46 34 02 BIASCI PSHS A SAVE "A" ON STACK1265 FC48 C6 08 LDB #8 PRESET LOOP# TO BITS PER BYTE1266 FC4A A6 80 OUTBA LDA ,X+ GET LETTER FROM STRING1267 FC4C 68 E4 ASL ,S TEST BYTE FOR "1" IN B71268 FC4E 25 02 BCS PRTBA IF ONE PRINT LETTER1269 FC50 86 2D LDA #'- IF ZERO PRINT "-"1270 FC52 8D 2F PRTBA BSR OUTCH PRINT IT1271 FC54 8D 2B BSR OUT1S PRINT SPACE1272 FC56 5A DECB SUB 1 FROM #BITS YET TO PRINT1273 FC57 26 F1 BNE OUTBA1274 FC59 35 82 PULS A,PC1275 *1276 IFD EXTOPT1277 *1278 * EXTENDED USER COMMANDS1279 *1280 USRCMD JMP [MONEXT+EXTCMD]1281 ENDIF EXTOPT1281 ENDIF EXTOPT1282 *1283 *1284 FC5B 7D DF D2 ECHON TST ECHO IS ECHO REQUIRED ?1285 FC5E 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 FC60 8D 04 INCHE BSR INCH GET CHAR FROM TERMINAL1296 FC62 84 7F ANDA #$7F STRIP PARITY FROM CHAR.1297 FC64 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 FC66 34 10 INCH PSHS X SAVE IX1308 FC68 BE DF D0 GETSTA LDX CPORT POINT TO TERMINAL PORT1309 FC6B A6 84 LDA ,X FETCH PORT STATUS1310 FC6D 85 01 BITA #1 TEST READY BIT, RDRF ?1311 IFD PS2OPT1312 BNE GETST11313 LDX #PS2KBD1314 LDA ,X1315 BITA #11316 ENDIF PS2OPT1316 ENDIF PS2OPT1317 FC6F 27 F7 BEQ GETSTA IF NOT RDY, THEN TRY AGAIN1318 FC71 A6 01 GETST1 LDA 1,X FETCH CHAR1319 FC73 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 FC75 34 02 INCHEK PSHS A SAVE A ACCUM.1331 FC77 A6 9F DF D0 LDA [CPORT] FETCH PORT STATUS1332 FC7B 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 FC7D 35 82 INCHEK1 PULS A,PC RESTORE A ACCUM.1339 *1340 FC7F 8D 00 OUT2S BSR OUT1S OUTPUT 2 SPACES1341 FC81 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 FC83 8D 3B BSR VOUTCH1356 ENDIF DG640OPT1357 FC85 34 12 AOUTCH PSHS A,X SAVE A ACCUM AND IX1358 FC87 BE DF D0 LDX CPORT GET ADDR. OF TERMINAL1359 FC8A A6 84 FETSTA LDA ,X FETCH PORT STATUS1360 FC8C 85 02 BITA #2 TEST TDRE, OK TO XMIT ?1361 FC8E 27 FA BEQ FETSTA IF NOT LOOP UNTIL RDY1362 FC90 35 02 PULS A GET CHAR. FOR XMIT1363 FC92 A7 01 STA 1,X XMIT CHAR.1364 FC94 35 90 PULS X,PC RESTORE IX1365 *1366 * IO INITIALIZATION1367 *1368 FC96 IOINIZ EQU *1369 IFD VDUOPT1370 BSR VINIZ1371 ENDIF VDUOPT1371 ENDIF VDUOPT1372 IFD DG640OPT1373 FC96 8D 13 BSR VINIZ1374 ENDIF DG640OPT1375 FC98 BE DF D0 ACINIZ LDX CPORT POINT TO CONTROL PORT ADDRESS1376 FC9B 86 03 LDA #3 RESET ACIA PORT CODE1377 FC9D A7 84 STA ,X STORE IN CONTROL REGISTER1378 FC9F 86 11 LDA #$11 SET 8 DATA, 2 STOP AN 0 PARITY1379 FCA1 A7 84 STA ,X STORE IN CONTROL REGISTER1380 FCA3 6D 01 TST 1,X ANYTHING IN DATA REGISTER?1381 FCA5 86 FF LDA #$FF TURN ON ECHO FLAG1382 FCA7 B7 DF D2 STA ECHO1383 FCAA 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 FCAB 8E 00 00 VINIZ LDX #01627 FCAE BF DF EB STX COLADX AND ROWADX1628 FCB1 BF DF EF STX NEWROW AND ESCFLG1629 FCB4 8E E8 00 LDX #SCREEN POINT TO SCREEN1630 FCB7 BF DF ED STX CURSOR SET PROGRAM CURSOR1631 FCBA 86 1B LDA #$1B SEND ESCAPE1632 FCBC 8D 02 BSR VOUTCH1633 FCBE 86 59 LDA #'Y CLEAR TO END OF SCREEN1634 *1635 ** VIDEO OUTPUT ROUTINE1636 *1637 FCC0 34 16 VOUTCH PSHS A,B,X SAVE REGISTERS1638 *1639 ** CLEAR CURSOR1640 FCC2 BE DF ED LDX CURSOR1641 FCC5 E6 84 LDB 0,X1642 FCC7 C4 7F ANDB #$7F1643 FCC9 E7 84 STB 0,X1644 *1645 ** CHECK FOR ESCAPE SEQUENCE1646 FCCB 7D DF F0 TST ESCFLG ESCAPE ACTIVE?1647 FCCE 27 04 BEQ SOROU1 BRANCH IF NOT1648 FCD0 8D 5E BSR ESCAPE ELSE DO ESCAPE1649 FCD2 20 10 BRA RETURN AND RETURN1650 *1651 ** CHECK FOR CONTROL CHARACTERS1652 FCD4 81 20 SOROU1 CMPA #$20 CONTROL CODES?1653 FCD6 24 04 BHS SOROU21654 FCD8 8D 15 BSR CONTRL BRANCH IF SO1655 FCDA 20 08 BRA RETURN1656 *1657 ** OUTPUT TEXT CHARACTER1658 FCDC BE DF ED SOROU2 LDX CURSOR ELSE GET CURSOR1659 FCDF A7 84 STAA 0,X DISPLAY CHARACTER1660 FCE1 17 00 E9 LBSR NEWCOL UPDATE COLUMN1661 *1662 ** DISPLAY CURSOR AND RETURN1663 FCE4 BE DF ED RETURN LDX CURSOR AND DISPLAY IT1664 FCE7 E6 84 LDB ,X1665 FCE9 CA 80 ORAB #$80 WITH REVID1666 FCEB E7 84 STB ,X1667 FCED 35 96 PULS A,B,X,PC RESTORE REGISTERS AND RETURN16681669 ***************************************************1670 * CONTROL CODE HANDLERS *1671 ***************************************************16721673 FCEF 81 08 CONTRL CMPA #$08 CTRL H - BACKSPACE ?1674 FCF1 10 27 00 27 LBEQ BACKSP1675 FCF5 81 1B CMPA #$1B ESCAPE SEQUENCE?1676 FCF7 10 27 00 52 LBEQ SETESC1677 FCFB 81 0D CMPA #$D CTRL M - RETURN?1678 FCFD 10 27 00 B4 LBEQ CRETN1679 FD01 81 0A CMPA #$0A CTRL J - LINE FEED1680 FD03 26 4F BNE RETESC NONE OF THESE, RETURN16811682 ***************************************** LINE FEED16831684 FD05 FC DF EB LINEFD LDD COLADX GET CURRENT COLUMN AND ROW1685 FD08 5C INCB BUMP ROW1686 FD09 C1 10 CMPB #NUMLIN SCROLL TIME?1687 FD0B 10 26 00 AA LBNE NEWCUR POSITION CURSOR IF NOT1688 FD0F 16 00 CC LBRA SCROLL ELSE SCROLL IT16891690 ***************************************** LINE FEED16911692 FD12 FC DF EB LINEUP LDD COLADX GET CURRENT COLUMN AND ROW1693 FD15 5D TSTB AT TOP OF SCREEN ?1694 FD16 27 3C BEQ RETESC Yes, Ignore1695 FD18 5A DECB No, Decrement ROW1696 FD19 16 00 9D LBRA NEWCUR POSITION CURSOR169716981699 *********************************** BACK SPACE17001701 FD1C B6 DF EB BACKSP LDA COLADX1702 FD1F 27 33 BEQ RETESC RETURN1703 FD21 4A DECA1704 FD22 16 00 91 LBRA POSCOL POSITION CURSOR17051706 *********************************** CURSOR RIGHT17071708 FD25 B6 DF EB CHRIGHT LDA COLADX1709 FD28 4C INCA1710 FD29 81 40 CMPA #LINLEN1711 FD2B 27 27 BEQ RETESC1712 FD2D 16 00 86 LBRA POSCOL17131714 ***************************************************1715 * ESCAPE HANDLERS *1716 ***************************************************17171718 FD30 F6 DF F0 ESCAPE LDAB ESCFLG GET FLAG1719 FD33 C1 3D CMPB #'= SETTING CURSOR?1720 FD35 27 1E BEQ ESCCUR BRANCH IF SO1721 FD37 81 59 CMPA #'Y CLEAR TO END OF SCREEN?1722 FD39 10 27 00 B8 LBEQ ESCCLS1723 FD3D 81 54 CMPA #'T CLEAR TO END OF LINE?1724 FD3F 27 5D BEQ ESCCLL1725 FD41 81 45 CMPA #'E INSERT LINE?1726 FD43 27 3B BEQ ESCINL1727 FD45 81 52 CMPA #'R DELETE LINE?1728 FD47 27 2C BEQ ESCDLL1729 FD49 81 3D CMPA #'= STARTING CURSOR SET?1730 FD4B 26 04 BNE CLRESC BRANCH IF NOT17311732 ***************************** START ESCAPE SEQUENCE17331734 FD4D B7 DF F0 SETESC STAA ESCFLG ELSE START CURSORING1735 FD50 39 RTS AND RETURN17361737 FD51 7F DF F0 CLRESC CLR ESCFLG NO OTHERS SUPPORTED1738 FD54 39 RETESC RTS SO RETURN17391740 ********************************* SET SCREEN CURSOR17411742 FD55 7D DF EF ESCCUR TST NEWROW ROW SET?1743 FD58 26 04 BNE ESCCU1 BRANCH IF SO1744 FD5A B7 DF EF STAA NEWROW ELSE SET NEW ROW1745 FD5D 39 RTS AND RETURN17461747 FD5E 7F DF F0 ESCCU1 CLR ESCFLG1748 FD61 80 20 SUBA #$20 ADJUST COLUMN ADDRESS1749 FD63 81 3F CMPA #LINLEN-1 CHECK FOR ACCEPTABLE COLUM1750 FD65 22 ED BHI RETESC NOT OK, DO NOTHING17511752 FD67 F6 DF EF ESCCU2 LDAB NEWROW1753 FD6A 7F DF EF CLR NEWROW1754 FD6D C0 20 SUBB #$20 ADJUST TO ROW ADDRESS1755 FD6F C1 0F CMPB #NUMLIN-1 CHECK FOR ACCEPTABLE ROW1756 FD71 22 E1 BHI RETESC ELSE RETURN DOING NOTHING1757 FD73 20 44 BRA NEWCUR GO SET NEW CURSOR IF SO1758 *1759 *************************** DELETE LINE FROM SCREEN17601761 FD75 8D 3E ESCDLL BSR CRETN GO COL. ZERO1762 FD77 F6 DF EC LDB ROWADX1763 FD7A C1 0F CMPB #NUMLIN-11764 FD7C 27 7A BEQ SCROL31765 FD7E 20 61 BRA SCROL1 AND DELETE THIS LINE17661767 *************************** INSERT LINE INTO SCREEN17681769 FD80 8D 33 ESCINL BSR CRETN GO TO COL. ZERO1770 FD82 F6 DF EC LDAB ROWADX1771 FD85 C1 0F CMPB #NUMLIN-11772 FD87 27 15 BEQ ESCCLL1773 *1774 ** SCROLL SCREEN DOWN FROM CURSOR1775 *1776 FD89 8E EB C0 LDX #SCREEN+SCNLEN-LINLEN1777 FD8C A6 82 ESCIN0 LDAA 0,-X1778 FD8E A7 88 40 STAA LINLEN,X1779 FD91 A6 89 04 00 LDA SCNLEN,X1780 FD95 A7 89 04 40 STA SCNLEN+LINLEN,X1781 FD99 BC DF ED CPX CURSOR1782 FD9C 26 EE BNE ESCIN017831784 ****************** CLEAR FROM CURSOR TO END OF LINE17851786 FD9E B6 DF EB ESCCLL LDA COLADX GET CURRENT COLUMN1787 FDA1 BE DF ED LDX CURSOR GET CURSOR1788 FDA4 C6 20 LDB #$20 AND CLEAR CHAR1789 FDA6 E7 89 04 00 ESCLL1 STB SCNLEN,X CLEAR ATTRIBUTE1790 FDAA E7 80 STB ,X+ CLEAR TEXT1791 FDAC 4C INCA1792 FDAD 81 40 CMPA #LINLEN UNTIL END OF LINE1793 FDAF 26 F5 BNE ESCLL11794 FDB1 7F DF F0 CLR ESCFLG1795 FDB4 39 RTS17961797 *********************************** CARRIAGE RETURN17981799 FDB5 4F CRETN CLRA SET COLUMN ZERO1800 FDB6 F6 DF EC POSCOL LDB ROWADX GET CURRENT ROW18011802 *********** GENERATE NEW CURSOR POSITION AND RETURN18031804 FDB9 FD DF EB NEWCUR STD COLADX SAVE NEW ROW AND COLUMN1805 FDBC 86 40 LDA #LINLEN ELSE ADD A LINE1806 FDBE 3D MUL LINLEN * ROWADX1807 FDBF FB DF EB ADDB COLADX1808 FDC2 89 00 ADCA #01809 FDC4 C3 E8 00 ADDD #SCREEN ADD SCREEN BASE.1810 FDC7 FD DF ED STD CURSOR SAVE NEW CURSOR1811 FDCA 1F 01 TFR D,X GET CURSOR IN X1812 FDCC 39 RTS AND RETURN18131814 ********************* UPDATE CURRENT COLUMN AND ROW18151816 FDCD FC DF EB NEWCOL LDD COLADX GET ROW AND COLUMN1817 FDD0 4C INCA BUMP COLUMN1818 FDD1 81 40 CMPA #LINLEN ROLL?1819 FDD3 26 E4 BNE NEWCUR BRANCH IF NOT1820 FDD5 4F CLRA ELSE RESET TO ZERO1821 FDD6 5C INCB AND BUMP ROW1822 FDD7 C1 10 CMPB #NUMLIN1823 FDD9 26 DE BNE NEWCUR1824 FDDB 5A DECB BOTTOM ROW1825 FDDC 8D DB BSR NEWCUR18261827 ********************************* SCROLL THE SCREEN18281829 FDDE 8E E8 00 SCROLL LDX #SCREEN POINT TO SCREEN1830 FDE1 A6 89 04 40 SCROL1 LDA SCNLEN+LINLEN,X1831 FDE5 A7 89 04 00 STA SCNLEN,X1832 FDE9 A6 88 40 LDAA LINLEN,X MOVE TWO BYTES1833 FDEC A7 80 STAA 0,X+ UP ONE LINE1834 FDEE 8C EB C0 CMPX #SCREEN+SCNLEN-LINLEN1835 FDF1 26 EE BNE SCROL1 LOOP UNTIL DONE1836 FDF3 20 03 BRA SCROL318371838 **************** CLEAR FROM CURSOR TO END OF SCREEN18391840 FDF5 BE DF ED ESCCLS LDX CURSOR GET CURSOR1841 FDF8 86 20 SCROL3 LDAA #$20 GET A SPACE1842 FDFA A7 89 04 00 SCROL2 STA SCNLEN,X CLEAR ATTRIBUTES1843 FDFE A7 80 STA ,X+ AND TEXT1844 FE00 8C EC 00 CMPX #SCREEN+SCNLEN1845 FE03 26 F5 BNE SCROL2 UNTIL DONE1846 FE05 7F DF F0 CLR ESCFLG1847 FE08 39 RTS1848 ENDIF DG640OPT1849 *1850 IFD PRTOPT1851 *************************************1852 *1853 ** PRINTER DRIVER ROUTINES1854 *1855 *************************************1856 *1857 ** PINIZ - INITIATE PRINTER PORT1858 *1859 FE09 34 04 PINIZ PSHS B1860 FE0B CC 0C 04 LDD #DIRMSK*256+$04 ACCA=DIRMSK ACCB=$041861 FE0E FD E4 04 STD PADATA SET DDR AND SELECT DATA1862 *1863 ** RESET PRINTER1864 FE11 C6 04 LDB #PRESET1865 FE13 F7 E4 04 STAB PADATA1866 FE16 5C RESTLP INCB DELAY FOR RESET1867 FE17 26 FD BNE RESTLP1868 FE19 B7 E4 04 STAA PADATA ACCA=DIRMSK1869 *1870 ** INITALIZE PORT B (DATA PORT)1871 FE1C 86 2A LDAA #$2A1872 FE1E B7 E4 07 STAA PBCTRL1873 FE21 CC FF 2E LDD #$FF2E ACCA=$FF ACCB =%001011101874 FE24 FD E4 06 STD PBDATA PBDREG PBCTRL1875 *1876 ** SELECT 66 LINES/PAGE1877 FE27 86 1B LDAA #$1B1878 FE29 8D 08 BSR POUTCH1879 FE2B 86 43 LDAA #'C1880 FE2D 8D 04 BSR POUTCH1881 FE2F 86 42 LDAA #661882 FE31 35 04 PULS B1883 *************************************1884 *1885 ** OUTPUT A CHARACTER TO THE PRINTER1886 *1887 *************************************1888 FE33 34 04 POUTCH PSHS B1889 FE35 F6 E4 06 LDAB PBDATA CLEAR INTERRUPT BIT1890 *1891 ** WAIT TILL NOT BUSY1892 FE38 F6 E4 04 BUSYLP LDAB PADATA1893 FE3B C5 10 BITB #PERROR1894 FE3D 27 06 BEQ PEXIT1895 FE3F 5D TSTB1896 FE40 2B F6 BMI BUSYLP1897 *1898 ** NOW OUTPUT CHARACTER1899 FE42 B7 E4 06 STAA PBDATA1900 FE45 35 84 PEXIT PULS B,PC1901 *************************************1902 *1903 ** PCHK TEST IFD PRINTER READY1904 *1905 *************************************1906 FE47 7D E4 07 PCHK TST PBCTRL TEST STATE OF CRB71907 FE4A 39 RTS SET ON ACKNOWLEDGE1908 ENDIF PRTOPT1909 *************************************1910 *1911 * MONITOR KEYBOARD COMMAND JUMP TABLE1912 *1913 *************************************1914 *1915 FE4B JMPTAB EQU *1916 FE4B 01 FCB 1 " ^A "1917 FE4C FB 3D FDB ALTRA1918 FE4E 02 FCB 2 " ^B "1919 FE4F FB 32 FDB ALTRB1920 FE51 03 FCB 3 " ^C "1921 FE52 FB 48 FDB ALTRCC1922 FE54 04 FCB 4 " ^D "1923 FE55 FB 27 FDB ALTRDP1924 FE57 10 FCB $10 " ^P "1925 FE58 FA FA FDB ALTRPC1926 FE5A 15 FCB $15 " ^U "1927 FE5B FB 06 FDB ALTRU1928 FE5D 18 FCB $18 " ^X "1929 FE5E FB 1C FDB ALTRX1930 FE60 19 FCB $19 " ^Y "1931 FE61 FB 11 FDB ALTRY1932 *1933 FE63 42 FCC 'B'1934 FE64 F9 51 FDB BRKPNT1935 FE66 45 FCC 'E'1936 FE67 F8 F2 FDB MEMDUMP1937 FE69 47 FCC 'G'1938 FE6A F8 9A FDB GO1939 FE6C 4C FCC 'L'1940 FE6D FA 27 FDB LOAD1941 FE6F 50 FCC 'P'1942 FE70 FA 85 FDB PUNCH1943 FE72 4D FCC 'M'1944 FE73 F8 9D FDB MEMCHG1945 FE75 52 FCC 'R'1946 FE76 FB B6 FDB REGSTR1947 FE78 53 FCC 'S'1948 FE79 F8 E6 FDB DISSTK1949 FE7B 58 FCC 'X'1950 FE7C F9 7D FDB XBKPNT1951 IFD MFDCOPT1952 FE7E 44 FCC 'D' *** SWTPC USES 'U' FOR MINIBOOT1953 FE7F F9 CA 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 FCC 'U' *** SWTPC USES 'D' FOR DMAF2 BOOT1965 FDB DBOOT1966 ENDIF DMAFOPT1966 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 FE81 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 FE81 F9 89 RAMVEC FDB SWIE USER-V1992 FE83 F8 9C FDB RTI SWI3-V1993 FE85 F8 9C FDB RTI SWI2-V1994 FE87 F8 9C FDB RTI FIRQ-V1995 FE89 F8 9C FDB RTI IRQ-V1996 FE8B F9 89 FDB SWIE SWI-V1997 FE8D FF FF FDB $FFFF SVC-VO1998 FE8F FF FF FDB $FFFF SVC-VL1999 *2000 * PRINTABLE MESSAGE STRINGS2001 *2002 FE91 0D 0A 00 00 00 MSG1 FCB $D,$A,$0,$0,$0 * 0, CR/LF, 02003 FE96 53 59 53 30 39 42 FCC 'SYS09BUG 1.4 FOR '55 47 20 31 2E 3420 46 4F 52 202004 IFD S3EOPT2005 FCC 'S3E '2006 ENDIF S3EOPT2006 ENDIF S3EOPT2007 IFD B5XOPT2008 FCC 'B5-X300 '2009 ENDIF B5XOPT2009 ENDIF B5XOPT2010 IFD S3SOPT2011 FCC 'S3STARTER '2012 ENDIF S3SOPT2012 ENDIF S3SOPT2013 IFD ADSOPT2014 FEA7 41 44 53 36 38 30 FCC 'ADS6809 '39 202015 ENDIF ADSOPT2016 IFD SWTOPT`2017 FCC 'SWTPC '2018 ENDIF SWTOPT2018 ENDIF SWTOPT2019 IFD XESOPT`2020 FCC 'XESS '2021 ENDIF XESOPT2021 ENDIF XESOPT2022 FEAF 20 2D 20 FCC ' - '2023 FEB2 04 FCB 42024 FEB3 4B 0D 0A 00 00 00 MSG2 FCB 'K,$D,$A,$00,$00,$00,$04 K, * CR/LF + 3 NULS042025 FEBA 3E MSG3 FCC '>'2026 FEBB 04 FCB 42027 FEBC 57 48 41 54 3F MSG4 FCC 'WHAT?'2028 FEC1 04 FCB 42029 FEC2 20 2D 20 MSG5 FCC ' - '2030 FEC5 04 FCB 4'2031 FEC6 20 20 53 50 3D MSG10 FCC ' SP='2032 FECB 04 FCB 42033 FECC 20 20 50 43 3D MSG11 FCC ' PC='2034 FED1 04 FCB 42035 FED2 20 20 55 53 3D MSG12 FCC ' US='2036 FED7 04 FCB 42037 FED8 20 20 49 59 3D MSG13 FCC ' IY='2038 FEDD 04 FCB 42039 FEDE 20 20 49 58 3D MSG14 FCC ' IX='2040 FEE3 04 FCB 42041 FEE4 20 20 44 50 3D MSG15 FCC ' DP='2042 FEE9 04 FCB 42043 FEEA 20 20 41 3D MSG16 FCC ' A='2044 FEEE 04 FCB 42045 FEEF 20 20 42 3D MSG17 FCC ' B='2046 FEF3 04 FCB 42047 FEF4 20 20 43 43 3A 20 MSG18 FCC ' CC: '2048 FEFA 04 FCB 42049 FEFB 45 46 48 49 4E 5A MSG19 FCC 'EFHINZVC'56 432050 FF03 53 31 MSG20 FCC 'S1'2051 FF05 04 FCB 42052 IFD DATOPT2053 *2054 * POWER UP/ RESET/ NMI ENTRY POINT2055 *2056 ORG $FF002057 *2058 *2059 START LDX #IC11 POINT TO DAT RAM IC112060 LDA #$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 DATLP STA ,X+ STORE & POINT TO NEXT RAM LOCATION2071 DECA GET COMP. VALUE FOR NEXT LOCATION2072 BNE DATLP ALL 16 LOCATIONS INITIALIZED ?2073 *2074 * NOTE: IX NOW CONTAINS $0000, DAT RAM IS NO LONGER2075 * ADDRESSED, AND LOGICAL ADDRESSES NOW EQUAL2076 * PHYSICAL ADDRESSES.2077 *2078 LDA #$F02079 STA ,X STORE $F0 AT $FFFF2080 LDX #$D0A0 ASSUME RAM TO BE AT $D000-$DFFF2081 LDY #TSTPAT LOAD TEST DATA PATTERN INTO "Y"2082 TSTRAM LDU ,X SAVE DATA FROM TEST LOCATION2083 STY ,X STORE TEST PATTERN AT $D0A02084 CMPY ,X IS THERE RAM AT THIS LOCATION ?2085 BEQ CNVADR IF MATCH THERE'S RAM, SO SKIP2086 LEAX -$1000,X ELSE POINT 4K LOWER2087 CMPX #$F0A0 DECREMENTED PAST ZER0 YET ?2088 BNE TSTRAM IF NOT CONTINUE TESTING FOR RAM2089 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 CNVADR STU ,X RESTORE DATA AT TEST LOCATION2115 TFR X,D PUT ADDR. OF PRESENT 4K BLOCK IN D2116 COMA COMPLEMENT MSB OF THAT ADDRESS2117 LSRA PUT MS 4 BITS OF ADDRESS IN2118 LSRA LOCATION D0-D3 TO ALLOW STORING2119 LSRA IT IN THE DYNAMIC ADDRESS2120 LSRA TRANSLATION RAM.2121 STA $FFFD STORE XLATION FACTOR IN DAT "D"2122 *2123 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 LDY #LRARAM POINT TO LOGICAL/REAL ADDR. TABLE2158 STA 13,Y STORE $D--- XLATION FACTOR AT $DFDD2159 CLR 14,Y CLEAR $DFDE2160 LDA #$F0 DESTINED FOR IC8 AN MEM EXPANSION ?2161 STA 15,Y STORE AT $DFDF2162 LDA #$0C PRESET NUMBER OF BYTES TO CLEAR2163 CLRLRT CLR A,Y CLEAR $DFDC THRU $DFD02164 DECA SUB. 1 FROM BYTES LEFT TO CLEAR2165 BPL CLRLRT CONTINUE IF NOT DONE CLEARING2166 FNDRAM LEAX -$1000,X POINT TO NEXT LOWER 4K OF RAM2167 CMPX #$F0A0 TEST FOR DECREMENT PAST ZERO2168 BEQ FINTAB SKIP IF FINISHED2169 LDU ,X SAVE DATA AT CURRENT TEST LOCATION2170 LDY #TSTPAT LOAD TEST DATA PATTERN INTO Y REG.2171 STY ,X STORE TEST PATT. INTO RAM TEST LOC.2172 CMPY ,X VERIFY RAM AT TEST LOCATION2173 BNE FNDRAM IF NO RAM GO LOOK 4K LOWER2174 STU ,X ELSE RESTORE DATA TO TEST LOCATION2175 LDY #LRARAM POINT TO LOGICAL/REAL ADDR. TABLE2176 TFR X,D PUT ADDR. OF PRESENT 4K BLOCK IN D2177 LSRA PUT MS 4 BITS OF ADDR. IN LOC. D0-D32178 LSRA TO ALLOW STORING IT IN THE DAT RAM.2179 LSRA2180 LSRA2181 TFR A,B SAVE OFFSET INTO LRARAM TABLE2182 EORA #$0F INVERT MSB OF ADDR. OF CURRENT 4K BLK2183 STA B,Y SAVE TRANSLATION FACTOR IN LRARAM TABLE2184 BRA FNDRAM GO TRANSLATE ADDR. OF NEXT 4K BLK2185 FINTAB LDA #$F1 DESTINED FOR IC8 AND MEM EXPANSION ?2186 LDY #LRARAM POINT TO LRARAM TABLE2187 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 LDA #$0C PRESET NUMBER HEX "C"2196 FINDC LDB A,Y GET ENTRY FROM LRARAM TABLE2197 BNE FOUNDC BRANCH IF RAM THIS PHYSICAL ADDR.2198 DECA ELSE POINT 4K LOWER2199 BPL FINDC GO TRY AGAIN2200 BRA XFERTF2201 FOUNDC CLR A,Y CLR XLATION FACTOR OF 4K BLOCK FOUND2202 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 CLRA START AT ZERO2210 TFR Y,X START POINTER "X" START OF "LRARAM" TABLE.2211 COMPRS LDB A,Y GET ENTRY FROM "LRARAM" TABLE2212 BEQ PNTNXT IF IT'S ZER0 SKIP2213 CLR A,Y ELSE ERASE FROM TABLE2214 STB ,X+ AND ENTER ABOVE LAST ENTRY- BUMP2215 PNTNXT INCA GET OFFSET TO NEXT ENTRY2216 CMPA #$0C LAST ENTRY YET ?2217 BLT COMPRS2218 *2219 * THE FOLLOWING CODE TRANSFER THE TRANSLATION2220 * FACTORS FROM THE LRARAM TABLE TO IC11 ON2221 * THE MP-09 CPU CARD.2222 *2223 XFERTF LDX #IC11 POINT TO DAT RAM IC112224 LDB #$10 GET NO. OF BYTES TO MOVE2225 FETCH LDA ,Y+ GET BYTE AND POINT TO NEXT2226 STA ,X+ POKE XLATION FACTOR IN IC112227 DECB SUB 1 FROM BYTES TO MOVE2228 BNE FETCH CONTINUE UNTIL 16 MOVED2229 *2230 ELSE2231 FF06 39 LRA RTS2232 FF07 10 CE DF C0 START LDS #STACK INITIALIZE STACK POINTER2233 FF0B 5F CLRB2234 ENDIF DATOPT2235 *2236 FF0C 53 COMB SET "B" NON-ZERO2237 FF0D F7 DF D2 STB ECHO TURN ON ECHO FLAG2238 FF10 16 F9 0F LBRA MONITOR INITIALIZATION IS COMPLETE2239 *2240 ** INTERRUPT JUMP VECTORS2241 *2242 FF13 6E 9F DF C0 V1 JMP [STACK]2243 FF17 6E 9F DF C4 V2 JMP [SWI2]2244 FF1B 6E 9F DF C6 V3 JMP [FIRQ]2245 FF1F 6E 9F DF C8 V4 JMP [IRQ]2246 FF23 6E 9F DF CA V5 JMP [SWI]2247 *2248 * SWI3 ENTRY POINT2249 *2250 FF27 1F 43 SWI3E TFR S,U2251 FF29 AE 4A LDX 10,U *$FFC82252 FF2B E6 80 LDB ,X+2253 FF2D AF 4A STX 10,U2254 FF2F 4F CLRA2255 FF30 58 ASLB2256 FF31 49 ROLA2257 FF32 BE DF CC LDX SVCVO2258 FF35 8C FF FF CMPX #$FFFF2259 FF38 27 0F BEQ SWI3Z2260 FF3A 30 8B LEAX D,X2261 FF3C BC DF CE CMPX SVCVL2262 FF3F 22 08 BHI SWI3Z2263 FF41 34 10 PSHS X2264 FF43 EC C4 LDD ,U2265 FF45 AE 44 LDX 4,U2266 FF47 6E F1 JMP [,S++]2267 FF49 37 1F SWI3Z PULU A,B,X,CC,DP2268 FF4B EE 42 LDU 2,U2269 FF4D 6E 9F DF C2 JMP [SWI3]2270 *2271 * 6809 VECTORS2272 *2273 FFF0 ORG $FFF02274 FFF0 FF 13 FDB V1 USER-V2275 FFF2 FF 27 FDB SWI3E SWI3-V2276 FFF4 FF 17 FDB V2 SWI2-V2277 FFF6 FF 1B FDB V3 FIRQ-V2278 FFF8 FF 1F FDB V4 IRQ-V2279 FFFA FF 23 FDB V5 SWI-V2280 FFFC FF 13 FDB V1 NMI-V2281 FFFE FF 07 FDB START RESTART-V0004 END START0005 ENDProgram + Init Data = 1889 bytesError count = 0