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File List | 1981-12-17 | 55KB | 1,068 lines

KIM.ASM 6502 CROSS-ASSEMBLER ver 1.0rmb 12-17-1981 Page 1 LINE LOC INSTR SOURCE CODE 1 ; 2 ;- - - - - - - - - - - - - - KIM.ASM - - - - - - - - - - - 3 ; COPYRIGHT MOS TECHNOLOGY, INC 4 ; DATE: OCT 18, 1975 REV-D 5 ;************************ 6530-003 I.C. ****************** 6 ; 6530-003 I.C. IS AN AUDIO CASSETTE TAPE RECORDER 7 ; EXTENSION OF THE BASIC KIM MONITOR. IT FEATURES 8 ; TWO ROUTINES: 9 ; LOADT - LOAD MEMORY FROM AUDIO TAPE 10 ; ID=00 IGNORE ID 11 ; ID=FF IGNORE ID, USE SA FOR START ADDR 12 ; ID=01-FE USE ADDRESS ON TAPE 13 ; 14 ; DUMPT - STORE MEMORY ONTO AUDIO TAPE 15 ; ID=00 SHOULD NOT BE USED 16 ; ID=FF SHOULD NOT BE USED 17 ; ID=01-FE NORMAL ID RANGE 18 ; SAL LSB STARTING ADDRESS OF PROGRAM 19 ; SAH MSB 20 ; EAL ENDING ADDRESS OF PROGRAM 21 ; EAH MSB 22 ; 23 *= $1800 24 SAD = $1740 6530 A DATA 25 PADD = $1741 6530 A DATA DIRECTION 26 SBD = $1742 6530 B DATA 27 PBDD = $1743 6530 B DATA DIRECTION 28 CLK1T = $1744 DIV BY 1 TIME 29 CLK8T = $1745 DIV BY 8 TIME 30 CLK64T = $1746 DIV BY 64 TIME 31 CLKKT = $1747 DIV BY 1024 TIME 32 CLKRDI = $1747 READ TIME OUT BIT 33 CLKRDT = $1746 READ TIME 34 ; ** MPU REG. SAVX AREA IN PAGE 0 ** 35 PCL = $EF PROGRAM CNT LOW 36 PCH = $F0 PROGRAM CNT HI 37 PREG = $F1 CURRENT STATUS REG 38 SPUSER = $F2 CURRENT STACK POINTER 39 ACC = $F3 ACCUMULATOR 40 YREG = $F4 Y INDEX 41 XREG = $F5 X INDEX 42 ; ** KIM FIXED AREA IN PAGE 0 ** 43 CHKHI = $F6 44 CHKSUM = $F7 45 INL = $F8 INPUT BUFFER 46 INH = $F9 INPUT BUFFER 47 POINTL = $FA LSB OF OPEN CELL 48 POINTH = $FB MSB OF OPEN CELL 49 TEMP = $FC 50 TMPX = $FD 51 CHAR = $FE 52 MODE = $FF 53 ; ** KIM FIXED AREA IN PAGE 23 ** 54 CHKL = $17E7 55 CHKH = $17E8 CHKSUM 56 SAVX = $17E9 (3-BYTES) 57 VEB = $17EC VOLATILE EXEC BLOCK (6-B) KIM.ASM 6502 CROSS-ASSEMBLER ver 1.0rmb 12-17-1981 Page 2 LINE LOC INSTR SOURCE CODE 58 CNTL30 = $17F2 TTY DELAY 59 CNTH30 = $17F3 TTY DELAY 60 TIMH = $17F4 61 SAL = $17F5 LOW STARTING ADDRESS 62 SAH = $17F6 HI STARTING ADDRESS 63 EAL = $17F7 LOW ENDING ADDRESS 64 EAH = $17F8 HI ENDING ADDRESS 65 ID = $17F9 TAPE PROGRAM ID NUMBER 66 ; ** INTERRUPT VECTORS ** 67 NMIV = $17FA STOP VECTOR (STOP=1C00) 68 RSTV = $17FC RST VECTOR 69 IRQV = $17FE IRQ VECTOR (BRK=1C00) 71 ; 72 ; ** DUMP MEMORY TO TAPE ** 73 1800 A9 AD DUMPT LDA #$AD LOAD ABSOLUTE INST 1800 74 1802 8D EC 17 STA VEB 75 1805 20 32 19 JSR INTVEB 76 1808 A9 27 LDA #$27 TURN OFF DATAIN PB5 77 180A 8D 42 17 STA SBD 78 180D A9 BF LDA #$BF CONVERT PB7 TO OUTPUT 79 180F 8D 43 17 STA PBDD 80 1812 A2 64 LDX #$64 100 CHARS 81 1814 A9 16 DUMPT1 LDA #$16 SYNC CHARS 82 1816 20 7A 19 JSR OUTCHT 83 1819 CA DEX 84 181A D0 F8 BNE DUMPT1 85 181C A9 2A LDA #$2A START CHAR 86 181E 20 7A 19 JSR OUTCHT 87 1821 AD F9 17 LDA ID OUTPUT ID 88 1824 20 61 19 JSR OUTBT 89 1827 AD F5 17 LDA SAL OUTPUT STARTING 90 182A 20 5E 19 JSR OUTBTC ADDRESS 91 182D AD F6 17 LDA SAH 92 1830 20 5E 19 JSR OUTBTC 93 1833 AD ED 17 DUMPT2 LDA VEB+1 CHECK FOR LAST 94 1836 CD F7 17 CMP EAL DATA BYTE 95 1839 AD EE 17 LDA VEB+2 96 183C ED F8 17 SBC EAH 97 183F 90 24 BCC DUMPT4 98 1841 A9 2F LDA #'/ OUTPUT END-OF-DATA CHAR 99 1843 20 7A 19 JSR OUTCHT 100 1846 AD E7 17 LDA CHKL LAST BYTE HAS BEEN 101 1849 20 61 19 JSR OUTBT OUTPUT NOW OUTPUT 102 184C AD E8 17 LDA CHKH CHKSUM 103 184F 20 61 19 JSR OUTBT 104 1852 A2 02 LDX #$02 2 CHARS 105 1854 A9 04 DUMPT3 LDA #$04 EOT CHAR 106 1856 20 7A 19 JSR OUTCHT 107 1859 CA DEX 108 185A D0 F8 BNE DUMPT3 109 185C A9 00 LDA #$00 DISPLAY 0000 110 185E 85 FA STA POINTL FOR NORMAL EXIT 111 1860 85 FB STA POINTH 112 1862 4C 4F 1C JMP START 113 1865 20 EC 17 DUMPT4 JSR VEB DATA BYTE OUTPUT 114 1868 20 5E 19 JSR OUTBTC 115 186B 20 EA 19 JSR INCVEB KIM.ASM 6502 CROSS-ASSEMBLER ver 1.0rmb 12-17-1981 Page 3 LINE LOC INSTR SOURCE CODE 116 186E 4C 33 18 JMP DUMPT2 117 ; 118 ; ** LOAD MEMORY FROM TAPE ** 119 ; 120 1871 0F 19 TAB .WORD LOAD12 'LOAD12' ADDRESS 1871 122 ; 123 1873 A9 8D LOADT LDA #$8D INIT VOLATILE EXECUTION 1873 124 1875 8D EC 17 STA VEB BLOCK WITH STA ABS. 125 1878 20 32 19 JSR INTVEB 126 187B A9 4C LDA #$4C JUMP TYPE RTRN 127 187D 8D EF 17 STA VEB+3 128 1880 AD 71 18 LDA TAB 129 1883 8D F0 17 STA VEB+4 130 1886 AD 72 18 LDA TAB+1 131 1889 8D F1 17 STA VEB+5 132 188C A9 07 LDA #$07 RESET PB5=0 (DATA-IN) 133 188E 8D 42 17 STA SBD 134 1891 A9 FF SYNC LDA #$FF CLEAR SAVX FOR SYNC CHAR 1891 135 1893 8D E9 17 STA SAVX 136 1896 20 41 1A SYNC1 JSR RDBIT GET A BIT 137 1899 4E E9 17 LSR SAVX SHIFT BIT INTO CHAR 138 189C 0D E9 17 ORA SAVX 139 189F 8D E9 17 STA SAVX 140 18A2 AD E9 17 LDA SAVX GET NEW CHAR 141 18A5 C9 16 CMP #$16 SYNC CHAR 142 18A7 D0 ED BNE SYNC1 143 18A9 A2 0A LDX #$0A TEST FOR 10 SYNC CHARS 144 18AB 20 24 1A SYNC2 JSR RDCHT 145 18AE C9 16 CMP #$16 146 18B0 D0 DF BNE SYNC IF NOT 10 CHAR, RE-SYNC 147 18B2 CA DEX 148 18B3 D0 F6 BNE SYNC2 149 18B5 20 24 1A LOADT4 JSR RDCHT LOOK FOR START OF 150 18B8 C9 2A CMP #$2A DATA CHAR 151 18BA F0 06 BEQ LOAD11 152 18BC C9 16 CMP #$16 IF NOT , SHOULD BE SYNC 153 18BE D0 D1 BNE SYNC 154 18C0 F0 F3 BEQ LOADT4 155 18C2 20 F3 19 LOAD11 JSR RDBYT READ ID FROM TAPE 156 18C5 CD F9 17 CMP ID COMPARE WITH REQUESTED ID 157 18C8 F0 0D BEQ LOADT5 158 18CA AD F9 17 LDA ID DEFAULT 00, READ RECORD 159 18CD C9 00 CMP #$00 ANYWAY 160 18CF F0 06 BEQ LOADT5 161 18D1 C9 FF CMP #$FF DEFAULT FF, IGNORE SA ON 162 18D3 F0 17 BEQ LOADT6 TAPE 163 18D5 D0 9C BNE LOADT 164 18D7 20 F3 19 LOADT5 JSR RDBYT GET SA FROM TAPE 165 18DA 20 4C 19 JSR CHKT 166 18DD 8D ED 17 STA VEB+1 SAVX IN VEB+1,2 167 18E0 20 F3 19 JSR RDBYT 168 18E3 20 4C 19 JSR CHKT 169 18E6 8D EE 17 STA VEB+2 170 18E9 4C F8 18 JMP LOADT7 171 ; 172 18EC 20 F3 19 LOADT6 JSR RDBYT GET SA BUT IGNORE 18EC 173 18EF 20 4C 19 JSR CHKT KIM.ASM 6502 CROSS-ASSEMBLER ver 1.0rmb 12-17-1981 Page 4 LINE LOC INSTR SOURCE CODE 174 18F2 20 F3 19 JSR RDBYT 175 18F5 20 4C 19 JSR CHKT 176 18F8 A2 02 LOADT7 LDX #$02 GET 2 CHARS 177 18FA 20 24 1A LOAD13 JSR RDCHT GET CHAR (X) 178 18FD C9 2F CMP #$2F LOOK FOR LAST CHAR 179 18FF F0 14 BEQ LOADT8 180 1901 20 00 1A JSR PACKT CONVERT TO HEX 181 1904 D0 23 BNE LOADT9 Y=1 NON-HEX CHAR 182 1906 CA DEX 183 1907 D0 F1 BNE LOAD13 184 1909 20 4C 19 JSR CHKT COMPARE CHECKSUM 185 190C 4C EC 17 JMP VEB SAVX DATA IN MEMORY 186 190F 20 EA 19 LOAD12 JSR INCVEB INCR DATA POINTER 187 1912 4C F8 18 JMP LOADT7 188 ; 189 1915 20 F3 19 LOADT8 JSR RDBYT END OF DATA, COMPARE CHKSUM 1915 190 1918 CD E7 17 CMP CHKL 191 191B D0 0C BNE LOADT9 192 191D 20 F3 19 JSR RDBYT 193 1920 CD E8 17 CMP CHKH 194 1923 D0 04 BNE LOADT9 195 1925 A9 00 LDA #$00 NORMAL EXIT 196 1927 F0 02 BEQ LOAD10 197 1929 A9 FF LOADT9 LDA #$FF ERROR EXIT 198 192B 85 FA LOAD10 STA POINTL 199 192D 85 FB STA POINTH 200 192F 4C 4F 1C JMP START 201 ; 202 ; ** SUBROUTINES BELOW ** 203 1932 AD F5 17 INTVEB LDA SAL MOVE SA TO VEB+1,2 1932 204 1935 8D ED 17 STA VEB+1 205 1938 AD F6 17 LDA SAH 206 193B 8D EE 17 STA VEB+2 207 193E A9 60 LDA #$60 RTS INST 208 1940 8D EF 17 STA VEB+3 209 1943 A9 00 LDA #$00 CLEAR CHKSUM AREA 210 1945 8D E7 17 STA CHKL 211 1948 8D E8 17 STA CHKH 212 194B 60 RTS 213 ; ** COMPUTE CHKSUM FOR TAPE LOAD ** 214 194C A8 CHKT TAY 194C 215 194D 18 CLC 216 194E 6D E7 17 ADC CHKL 217 1951 8D E7 17 STA CHKL 218 1954 AD E8 17 LDA CHKH 219 1957 69 00 ADC #$00 220 1959 8D E8 17 STA CHKH 221 195C 98 TYA 222 195D 60 RTS 223 ; ** OUTPUT ONE BYTE ** 224 195E 20 4C 19 OUTBTC JSR CHKT COMPARE CHKSUM 195E 225 1961 A8 OUTBT TAY SAVX DATA BYTE 226 1962 4A LSR A SHIFT OFF LSD 227 1963 4A LSR A 228 1964 4A LSR A 229 1965 4A LSR A 230 1966 20 6F 19 JSR HEXOUT OUTPUT MSD KIM.ASM 6502 CROSS-ASSEMBLER ver 1.0rmb 12-17-1981 Page 5 LINE LOC INSTR SOURCE CODE 231 1969 98 TYA 232 196A 20 6F 19 JSR HEXOUT OUTPUT LSD 233 196D 98 TYA 234 196E 60 RTS 235 ; ** CONVERT LSD OF A TO ASCII, OUTPUT TO TAPE ** 236 196F 29 0F HEXOUT AND #$0F 196F 237 1971 C9 0A CMP #$0A 238 1973 18 CLC 239 1974 30 02 BMI HEX1 240 1976 69 07 ADC #$07 241 1978 69 30 HEX1 ADC #$30 242 ; ** OUTPUT TO TAPE ONE ASCII CHAR ** 243 197A 8E E9 17 OUTCHT STX SAVX 197A 244 197D 8C EA 17 STY SAVX+1 245 1980 A0 08 LDY #$08 START BIT 246 1982 20 9E 19 CHT1 JSR ONE 247 1985 4A LSR A GET DATA BIT 248 1986 B0 06 BCS CHT2 249 1988 20 9E 19 JSR ONE DATA BIT=1 250 198B 4C 91 19 JMP CHT3 251 198E 20 C4 19 CHT2 JSR ZRO DATA BIT=0 252 1991 20 C4 19 CHT3 JSR ZRO 253 1994 88 DEY 254 1995 D0 EB BNE CHT1 255 1997 AE E9 17 LDX SAVX 256 199A AC EA 17 LDY SAVX+1 257 199D 60 RTS 258 ; ** OUTPUT 1 TO TAPE, 9 PULSES, 138 US EACH ** 259 199E A2 09 ONE LDX #$09 199E 260 19A0 48 PHA SAVX A 261 19A1 2C 47 17 ONE1 BIT CLKRDI WAIT FOR TIME OUT 19A1 262 19A4 10 FB BPL ONE1 263 19A6 A9 7E LDA #126 264 19A8 8D 44 17 STA CLK1T 265 19AB A9 A7 LDA #$A7 266 19AD 8D 42 17 STA SBD SET PB7 = 1 267 19B0 2C 47 17 ONE2 BIT CLKRDI 19B0 268 19B3 10 FB BPL ONE2 269 19B5 A9 7E LDA #126 270 19B7 8D 44 17 STA CLK1T 271 19BA A9 27 LDA #$27 272 19BC 8D 42 17 STA SBD RESET PB7=0 273 19BF CA DEX 274 19C0 D0 DF BNE ONE1 275 19C2 68 PLA 276 19C3 60 RTS 277 ; ** OUTPUT 0 TO TAPE, 6 PULSES, 207 US EACH ** 278 19C4 A2 06 ZRO LDX #$06 19C4 279 19C6 48 PHA SAVX A 280 19C7 2C 47 17 ZRO1 BIT CLKRDI 19C7 281 19CA 10 FB BPL ZRO1 282 19CC A9 C3 LDA #$C3 283 19CE 8D 44 17 STA CLK1T 284 19D1 A9 A7 LDA #$A7 285 19D3 8D 42 17 STA SBD SET PB7=1 286 19D6 2C 47 17 ZRO2 BIT CLKRDI 287 19D9 10 FB BPL ZRO2 KIM.ASM 6502 CROSS-ASSEMBLER ver 1.0rmb 12-17-1981 Page 6 LINE LOC INSTR SOURCE CODE 288 19DB A9 C3 LDA #195 289 19DD 8D 44 17 STA CLK1T 290 19E0 A9 27 LDA #$27 291 19E2 8D 42 17 STA SBD RESET PB7=0 292 19E5 CA DEX 293 19E6 D0 DF BNE ZRO1 294 19E8 68 PLA RESTORE A 295 19E9 60 RTS 296 ; ** SUB TO INC VEB+1,2 ** 297 19EA EE ED 17 INCVEB INC VEB+1 19EA 298 19ED D0 03 BNE INCVE1 299 19EF EE EE 17 INC VEB+2 300 19F2 60 INCVE1 RTS 301 ; ** SUB TO READ BYTE FROM TAPE ** 302 19F3 20 24 1A RDBYT JSR RDCHT 19F3 303 19F6 20 00 1A JSR PACKT 304 19F9 20 24 1A JSR RDCHT 305 19FC 20 00 1A JSR PACKT 306 19FF 60 RTS 307 ; ** PACK A=ASCII INTO SAVX AS HEX DATA ** 308 1A00 C9 30 PACKT CMP #$30 1A00 309 1A02 30 1E BMI PACKT3 310 1A04 C9 47 CMP #$47 311 1A06 10 1A BPL PACKT3 312 1A08 C9 40 CMP #$40 313 1A0A 30 03 BMI PACKT1 314 1A0C 18 CLC 315 1A0D 69 09 ADC #$09 316 1A0F 2A PACKT1 ROL A 317 1A10 2A ROL A 318 1A11 2A ROL A 319 1A12 2A ROL A 320 1A13 A0 04 LDY #$04 321 1A15 2A PACKT2 ROL A 322 1A16 2E E9 17 ROL SAVX 323 1A19 88 DEY 324 1A1A D0 F9 BNE PACKT2 325 1A1C AD E9 17 LDA SAVX 326 1A1F A0 00 LDY #$00 Y=0 VALID HEX CHAR 327 1A21 60 RTS 328 1A22 C8 PACKT3 INY Y=1 NOT HEX 329 1A23 60 RTS 330 ; ** GET 1 CHAR FROM TAPE AND RETURN WITH 331 ; CHAR IN A. USE SAVX+1 TO ASM CHAR ** 332 1A24 8E EB 17 RDCHT STX SAVX+2 1A24 333 1A27 A2 08 LDX #$08 READ 8 BITS 334 1A29 20 41 1A RDCHT1 JSR RDBIT GET NEXT DATA BIT 335 1A2C 4E EA 17 LSR SAVX+1 RIGHT SHIFT CHAR 336 1A2F 0D EA 17 ORA SAVX+1 OR IN SIGN BIT 337 1A32 8D EA 17 STA SAVX+1 REPLACE CHAR 338 1A35 CA DEX 339 1A36 D0 F1 BNE RDCHT1 340 1A38 AD EA 17 LDA SAVX+1 MOVE CHAR INTO A 341 1A3B 2A ROL A SHIFT OFF PARITY 342 1A3C 4A LSR A 343 1A3D AE EB 17 LDX SAVX+2 344 1A40 60 RTS KIM.ASM 6502 CROSS-ASSEMBLER ver 1.0rmb 12-17-1981 Page 7 LINE LOC INSTR SOURCE CODE 345 ; ** THIS SUB GETS ONE BIT FROM TAPE AND 346 ; RETURNS IT IN SIGN OF A ** 347 1A41 2C 42 17 RDBIT BIT SBD WAIT FOR END OF START BIT 1A41 348 1A44 10 FB BPL RDBIT 349 1A46 AD 46 17 LDA CLKRDT GET START BIT TIME 350 1A49 A0 FF LDY #$FF A=256-T1 351 1A4B 8C 46 17 STY CLK64T SET UP TIMER 352 1A4E A0 14 LDY #$14 353 1A50 88 RDBIT3 DEY DELAY 100 MICRO SEC 354 1A51 D0 FD BNE RDBIT3 355 1A53 2C 42 17 RDBIT2 BIT SBD 356 1A56 30 FB BMI RDBIT2 WAIT FOR NEXT START BIT 357 1A58 38 SEC 358 1A59 ED 46 17 SBC CLKRDT (256-T1)-(256-T2)=T2-T1 359 1A5C A0 FF LDY #$FF 360 1A5E 8C 46 17 STY CLK64T SET UP TIMER FOR NEXT BIT 361 1A61 A0 07 LDY #$07 362 1A63 88 RDBIT4 DEY DELAY 50 MICROSEC 363 1A64 D0 FD BNE RDBIT4 364 1A66 49 FF EOR #$FF COMPLEMENT SIGN OF A 365 1A68 29 80 AND #$80 MASK ALL EXCEPT SIGN 366 1A6A 60 RTS 367 ; ** PLLCAL OUTPUT 166 MICROSEC (6024 HZ) 368 ; PULSE STRING 369 1A6B A9 27 PLLCAL LDA #$27 1A6B 370 1A6D 8D 42 17 STA SBD TURN OFF DATIN PB5=1 371 1A70 A9 BF LDA #$BF CONVERT PB7 TO OUTPUT 372 1A72 8D 43 17 STA PBDD 373 1A75 2C 47 17 PLL1 BIT CLKRDI 374 1A78 10 FB BPL PLL1 375 1A7A A9 9A LDA #154 WAIT 166 MICROSEC 376 1A7C 8D 44 17 STA CLK1T 377 1A7F A9 A7 LDA #$A7 OUTPUT PB7=1 378 1A81 8D 42 17 STA SBD 379 1A84 2C 47 17 PLL2 BIT CLKRDI 380 1A87 10 FB BPL PLL2 381 1A89 A9 9A LDA #154 382 1A8B 8D 44 17 STA CLK1T 383 1A8E A9 27 LDA #$27 PB7=0 384 1A90 8D 42 17 STA SBD 385 1A93 4C 75 1A JMP PLL1 386 ; 387 ; ** INTERRUPTS ** 388 *= $1BFA 389 1BFA 6B 1A NMIP27 .WORD PLLCAL 391 1BFC 6B 1A RSTP27 .WORD PLLCAL 393 1BFE 6B 1A IRQP27 .WORD PLLCAL 395 ; 396 ;******************* 6530-002 I.C. ***************** 397 ; ** COPYRIGHT MOS TECHNOLOGY INC. 398 ; DATE OCT 13, 1975 REV E 399 ; 400 ; ** KIM ** 401 ; TTY INTERFACE 6530-002 402 ; KEYBOARD INTERFACE, 403 ; 7-SEGMENT 6-DIGIT DISPLAY 404 ; KIM.ASM 6502 CROSS-ASSEMBLER ver 1.0rmb 12-17-1981 Page 8 LINE LOC INSTR SOURCE CODE 405 ; TTY COMANDS: 406 ; G GOEXEC 407 ; CR OPEN NEXT CELL 408 ; LF OPEN PREVIOUS CELL 409 ; . MODIFY OPEN CELL 410 ; SP OPEN NEW CELL 411 ; L LOAD (OBJECT FORMAT) 412 ; Q DUMP FROM OPEN CELL ADDR TO HI LIMIT 413 ; RO RUB OUT - RETURN TO START KIM 414 ; (ALL ILLEGAL CHARS ARE IGNORED) 415 ; 416 ; KEYBOARD COMMANDS: 417 ; ADDR SETS MODE TO MODIFY CELL ADDRESS 418 ; DATA SETS MODE TO MODIFY DATA IN OPEN CELL 419 ; STEP INCREMENTS TO NEXT CELL 420 ; RST SYSTEM RESET 421 ; RUN GOEXEC 422 ; STOP $1C00 CAN BE LOADED INTO NMIV TO USE 423 ; PC DISPLAY PC (PROGRAM COUNTER) 424 ; 425 *= $1C00 426 1C00 85 F3 SAVE STA ACC KIM ENTRY VIA STOP (NMI) 1C00 427 1C02 68 PLA OR BRK (IRQ) 428 1C03 85 F1 STA PREG 429 1C05 68 PLA KIM ENTRY VIA JSR (A LOST) 1C05 430 1C06 85 EF STA PCL 431 1C08 85 FA STA POINTL 432 1C0A 68 PLA 433 1C0B 85 F0 STA PCH 434 1C0D 85 FB STA POINTH 435 1C0F 84 F4 STY YREG 436 1C11 86 F5 STX XREG 437 1C13 BA TSX 438 1C14 86 F2 STX SPUSER 439 1C16 20 88 1E JSR INITS 440 1C19 4C 4F 1C JMP START 441 ; 442 1C1C 6C FA 17 NMIT JMP (NMIV) NON-MASKABLE INTERRUPT TRAP 1C1C 443 1C1F 6C FE 17 IRQT JMP (IRQV) INTERRUPT TRAP 1C1F 444 1C22 A2 FF RST LDX #$FF KIM ENTRY VIA RST 1C22 445 1C24 9A TXS 446 1C25 86 F2 STX SPUSER 447 1C27 20 88 1E JSR INITS 448 1C2A A9 FF LDA #$FF COUNT START BIT 449 1C2C 8D F3 17 STA CNTH30 ZERO CNTH30 450 1C2F A9 01 LDA #$01 MASK HI ORDER BITS 451 1C31 2C 40 17 DET1 BIT SAD TEST 1C31 452 1C34 D0 19 BNE START KEYBD SSW TEST 453 1C36 30 F9 BMI DET1 START BIT TEST 454 1C38 A9 FC LDA #$FC 455 1C3A 18 DET3 CLC THIS LOOP COUNTS 1C3A 456 1C3B 69 01 ADC #$01 THE START BIT TIME 457 1C3D 90 03 BCC DET2 458 1C3F EE F3 17 INC CNTH30 459 1C42 AC 40 17 DET2 LDY SAD CHECK FOR END OF START BIT 1C42 460 1C45 10 F3 BPL DET3 461 1C47 8D F2 17 STA CNTL30 KIM.ASM 6502 CROSS-ASSEMBLER ver 1.0rmb 12-17-1981 Page 9 LINE LOC INSTR SOURCE CODE 462 1C4A A2 08 LDX #$08 463 1C4C 20 6A 1E JSR GET5 GET REST OF THE CHAR, TEST CHAR 464 ; ** MAKE TTY/KB SELECTION ** 465 1C4F 20 8C 1E START JSR INIT1 1C4F 466 1C52 A9 01 LDA #$01 467 1C54 2C 40 17 BIT SAD 468 1C57 D0 1E BNE TTYKB 469 1C59 20 2F 1E JSR CRLF PRT CR LF 470 1C5C A2 0A LDX #$0A TYPE OUT KIM 471 1C5E 20 31 1E JSR PRTST 472 1C61 4C AF 1D JMP SHOW1 473 ; 474 1C64 A9 00 CLEAR LDA #$00 475 1C66 85 F8 STA INL CLEAR INPUT BUFFER 476 1C68 85 F9 STA INH 477 1C6A 20 5A 1E READ JSR GETCH GET CHAR 478 1C6D C9 01 CMP #$01 479 1C6F F0 06 BEQ TTYKB 480 1C71 20 AC 1F JSR PACK 481 1C74 4C DB 1D JMP SCAN 482 ; ** MAIN ROUTINE FOR KEYBOARD AND DISPLAY ** 483 1C77 20 19 1F TTYKB JSR SCAND IF A=0 NO KEY 1C77 484 1C7A D0 D3 BNE START 485 1C7C A9 01 TTYKB1 LDA #$01 486 1C7E 2C 40 17 BIT SAD 487 1C81 F0 CC BEQ START 488 1C83 20 19 1F JSR SCAND 489 1C86 F0 F4 BEQ TTYKB1 490 1C88 20 19 1F JSR SCAND 491 1C8B F0 EF BEQ TTYKB1 492 1C8D 20 6A 1F JSR GETKEY 493 1C90 C9 15 CMP #$15 494 1C92 10 BB BPL START 495 1C94 C9 14 CMP #$14 496 1C96 F0 44 BEQ PCCMD DISPLAY PC 497 1C98 C9 10 CMP #$10 ADDR MODE=1 498 1C9A F0 2C BEQ ADDRM 499 1C9C C9 11 CMP #$11 DATA MODE=1 500 1C9E F0 2C BEQ DATAM 501 1CA0 C9 12 CMP #$12 STEP 502 1CA2 F0 2F BEQ STEP 503 1CA4 C9 13 CMP #$13 RUN 504 1CA6 F0 31 BEQ GOV 505 1CA8 0A ASL A SHIFT CHAR INTO HIGH 506 1CA9 0A ASL A ORDER NIBBLE 507 1CAA 0A ASL A 508 1CAB 0A ASL A 509 1CAC 85 FC STA TEMP STORE IN TEMP 510 1CAE A2 04 LDX #$04 511 1CB0 A4 FF DATA1 LDY MODE TEST MODE 1=ADDR 512 1CB2 D0 0A BNE ADDR MODE=0 DATA 513 1CB4 B1 FA LDA (POINTL),Y GET DATA 514 1CB6 06 FC ASL TEMP SHIFT CHAR 515 1CB8 2A ROL A SHIFT DATA 516 1CB9 91 FA STA (POINTL),Y STORE OUT DATA 517 1CBB 4C C3 1C JMP DATA2 518 ; KIM.ASM 6502 CROSS-ASSEMBLER ver 1.0rmb 12-17-1981 Page 10 LINE LOC INSTR SOURCE CODE 519 1CBE 0A ADDR ASL A SHIFT CHAR 520 1CBF 26 FA ROL POINTL SHIFT ADDR 521 1CC1 26 FB ROL POINTH SHIFT ADDR HI 522 1CC3 CA DATA2 DEX 523 1CC4 D0 EA BNE DATA1 DO 4 TIMES 524 1CC6 F0 08 BEQ DATAM2 EXIT HERE 525 1CC8 A9 01 ADDRM LDA #$01 526 1CCA D0 02 BNE DATAM1 527 1CCC A9 00 DATAM LDA #$00 528 1CCE 85 FF DATAM1 STA MODE 529 1CD0 4C 4F 1C DATAM2 JMP START 530 ; 531 1CD3 20 63 1F STEP JSR INCPT 1CD3 532 1CD6 4C 4F 1C JMP START 533 ; 534 1CD9 4C C8 1D GOV JMP GOEXEC 1CD9 535 ; ** DISPLAY PC BY MOVING PC TO POINT ** 536 1CDC A5 EF PCCMD LDA PCL 1CDC 537 1CDE 85 FA STA POINTL 538 1CE0 A5 F0 LDA PCH 539 1CE2 85 FB STA POINTH 540 1CE4 4C 4F 1C JMP START 541 ; ** LOAD PAPER TAPE FROM TTY ** 542 1CE7 20 5A 1E LOAD JSR GETCH LOOK FOR FIRST CHAR 1CE7 543 1CEA C9 3B CMP #$3B SEMICOLON 544 1CEC D0 F9 BNE LOAD 545 1CEE A9 00 LDA #$00 546 1CF0 85 F7 STA CHKSUM 547 1CF2 85 F6 STA CHKHI 548 1CF4 20 9D 1F JSR GETBYT GET BYTE COUNT 549 1CF7 AA TAX SAVE IN X INDEX 550 1CF8 20 91 1F JSR CHK COMPUTE CHECKSUM 551 1CFB 20 9D 1F JSR GETBYT GET ADDRESS HI 552 1CFE 85 FB STA POINTH 553 1D00 20 91 1F JSR CHK 554 1D03 20 9D 1F JSR GETBYT GET ADDRESS LO 555 1D06 85 FA STA POINTL 556 1D08 20 91 1F JSR CHK 557 1D0B 8A TXA IF CNT=0 DONT 558 1D0C F0 0F BEQ LOAD3 GET ANY DATA 559 1D0E 20 9D 1F LOAD2 JSR GETBYT GET DATA 560 1D11 91 FA STA (POINTL),Y STORE DATA 561 1D13 20 91 1F JSR CHK 562 1D16 20 63 1F JSR INCPT NEXT ADDRESS 563 1D19 CA DEX 564 1D1A D0 F2 BNE LOAD2 565 1D1C E8 INX X=1 DATA RCD X=0 LAST RCD 566 1D1D 20 9D 1F LOAD3 JSR GETBYT COMPARE CHKSUM 567 1D20 C5 F6 CMP CHKHI 568 1D22 D0 17 BNE LOADE1 569 1D24 20 9D 1F JSR GETBYT 570 1D27 C5 F7 CMP CHKSUM 571 1D29 D0 13 BNE LOADER 572 1D2B 8A TXA X=0 LAST RECORD 573 1D2C D0 B9 BNE LOAD 574 1D2E A2 0C LDX #$0C X-OFF KIM 575 1D30 A9 27 LOAD8 LDA #$27 KIM.ASM 6502 CROSS-ASSEMBLER ver 1.0rmb 12-17-1981 Page 11 LINE LOC INSTR SOURCE CODE 576 1D32 8D 42 17 STA SBD DISABLE DATA IN 577 1D35 20 31 1E JSR PRTST 578 1D38 4C 4F 1C JMP START 579 ; 580 1D3B 20 9D 1F LOADE1 JSR GETBYT DUMMY 581 1D3E A2 11 LOADER LDX #$11 X-OFF ERR KIM 582 1D40 D0 EE BNE LOAD8 583 ; ** DUMP TO TTY FROM OPEN CELL ADDRESS TO 584 ; LIMHL, LIMHH ** 585 1D42 A9 00 DUMP LDA #$00 1D42 586 1D44 85 F8 STA INL 587 1D46 85 F9 STA INH CLEAR RECORD COUNT 588 1D48 A9 00 DUMP0 LDA #$00 589 1D4A 85 F6 STA CHKHI CLEAR CHKSUM 590 1D4C 85 F7 STA CHKSUM 591 1D4E 20 2F 1E JSR CRLF PRINT CR LF 592 1D51 A9 3B LDA #$3B PRINT SEMICOLON 593 1D53 20 A0 1E JSR OUTCH 594 1D56 A5 FA LDA POINTL TEST POINT GT OR ET 595 1D58 CD F7 17 CMP EAL HI LIMIT GOTO EXIT 596 1D5B A5 FB LDA POINTH 597 1D5D ED F8 17 SBC EAH 598 1D60 90 18 BCC DUMP4 599 1D62 A9 00 LDA #$00 PRINT LAST RECORD 600 1D64 20 3B 1E JSR PRTBYT 0 BYTES 601 1D67 20 CC 1F JSR OPEN 602 1D6A 20 1E 1E JSR PRTPNT 603 1D6D A5 F6 LDA CHKHI PRINT CHKSUM 604 1D6F 20 3B 1E JSR PRTBYT FOR LAST RECORD 605 1D72 A5 F7 LDA CHKSUM 606 1D74 20 3B 1E JSR PRTBYT 607 1D77 4C 64 1C JMP CLEAR 608 ; 609 1D7A A9 18 DUMP4 LDA #$18 PRINT 24 BYTE COUNT 1D7A 610 1D7C AA TAX SAVE AS INDEX 611 1D7D 20 3B 1E JSR PRTBYT 612 1D80 20 91 1F JSR CHK 613 1D83 20 1E 1E JSR PRTPNT 614 1D86 A0 00 DUMP2 LDY #$00 PRINT 24 BYTES 615 1D88 B1 FA LDA (POINTL),Y GET DATA 616 1D8A 20 3B 1E JSR PRTBYT PRINT DATA 617 1D8D 20 91 1F JSR CHK COMPUTE CHKSUM 618 1D90 20 63 1F JSR INCPT INCREMENT POINT 619 1D93 CA DEX 620 1D94 D0 F0 BNE DUMP2 621 1D96 A5 F6 LDA CHKHI PRINT CHKSUM 622 1D98 20 3B 1E JSR PRTBYT 623 1D9B A5 F7 LDA CHKSUM 624 1D9D 20 3B 1E JSR PRTBYT 625 1DA0 E6 F8 INC INL INCR RECORD COUNT 626 1DA2 D0 02 BNE DUMP3 627 1DA4 E6 F9 INC INH 628 1DA6 4C 48 1D DUMP3 JMP DUMP0 629 ; 630 1DA9 20 CC 1F SPACE JSR OPEN OPEN NEW CELL 1DA9 631 1DAC 20 2F 1E SHOW JSR CRLF PRINT CR LF 632 1DAF 20 1E 1E SHOW1 JSR PRTPNT KIM.ASM 6502 CROSS-ASSEMBLER ver 1.0rmb 12-17-1981 Page 12 LINE LOC INSTR SOURCE CODE 633 1DB2 20 9E 1E JSR OUTSP PRINT SPACE 634 1DB5 A0 00 LDY #$00 PRINT DATA SPECIFIED 635 1DB7 B1 FA LDA (POINTL),Y BY POINT AD=LDA EXT 636 1DB9 20 3B 1E JSR PRTBYT 637 1DBC 20 9E 1E JSR OUTSP PRINT SPACE 638 1DBF 4C 64 1C JMP CLEAR 639 ; 640 1DC2 20 63 1F RTRN JSR INCPT OPEN NEXT CELL 1DC2 641 1DC5 4C AC 1D JMP SHOW 642 ; 643 1DC8 A6 F2 GOEXEC LDX SPUSER 1DC8 644 1DCA 9A TXS 645 1DCB A5 FB LDA POINTH PROGRAM RUNS FROM 646 1DCD 48 PHA OPEN CELL ADDRESS 647 1DCE A5 FA LDA POINTL 648 1DD0 48 PHA 649 1DD1 A5 F1 LDA PREG 650 1DD3 48 PHA 651 1DD4 A6 F5 LDX XREG RESTORE REGS 652 1DD6 A4 F4 LDY YREG 653 1DD8 A5 F3 LDA ACC 654 1DDA 40 RTI 655 ; 656 1DDB C9 20 SCAN CMP #$20 OPEN CELL 657 1DDD F0 CA BEQ SPACE 658 1DDF C9 7F CMP #$7F RUB OUT (KIM) 659 1DE1 F0 1B BEQ STV 660 1DE3 C9 0D CMP #$0D NEXT CELL 661 1DE5 F0 DB BEQ RTRN 662 1DE7 C9 0A CMP #$0A PREV CELL 663 1DE9 F0 1C BEQ FEED 664 1DEB C9 2E CMP #'. MODIFY CELL 665 1DED F0 26 BEQ MODIFY 666 1DEF C9 47 CMP #'G GO EXEC 667 1DF1 F0 D5 BEQ GOEXEC 668 1DF3 C9 51 CMP #'Q DUMP FROM OPEN CELL TO HI LIMIT 669 1DF5 F0 0A BEQ DUMPV 670 1DF7 C9 4C CMP #'L LOAD TAPE 671 1DF9 F0 09 BEQ LOADV 672 1DFB 4C 6A 1C JMP READ IGNORE ILLEGAL CHAR 673 ; 674 1DFE 4C 4F 1C STV JMP START 675 1E01 4C 42 1D DUMPV JMP DUMP 676 1E04 4C E7 1C LOADV JMP LOAD 677 ; 678 1E07 38 FEED SEC 1E07 679 1E08 A5 FA LDA POINTL DEC DOUBLE BYTE 680 1E0A E9 01 SBC #$01 AT POINTL AND POINTH 681 1E0C 85 FA STA POINTL 682 1E0E B0 02 BCS FEED1 683 1E10 C6 FB DEC POINTH 684 1E12 4C AC 1D FEED1 JMP SHOW 685 ; 686 1E15 A0 00 MODIFY LDY #$00 GET CONTENTS OF INPUT BUFF 687 1E17 A5 F8 LDA INL INL AND STORE IN LOC 688 1E19 91 FA STA (POINTL),Y SPECIFIED BY POINT 689 1E1B 4C C2 1D JMP RTRN KIM.ASM 6502 CROSS-ASSEMBLER ver 1.0rmb 12-17-1981 Page 13 LINE LOC INSTR SOURCE CODE 690 ; 691 ; ** SUBROUTINES FOLLOW ** 692 1E1E A5 FB PRTPNT LDA POINTH PRINT POINTL, POINTH 1E1E 693 1E20 20 3B 1E JSR PRTBYT 694 1E23 20 91 1F JSR CHK 695 1E26 A5 FA LDA POINTL 696 1E28 20 3B 1E JSR PRTBYT 697 1E2B 20 91 1F JSR CHK 698 1E2E 60 RTS 699 ; **PRINT STRING OF ASCII CHARS FROM TOP+X TO TOP 700 1E2F A2 07 CRLF LDX #$07 701 1E31 BD D5 1F PRTST LDA TOP,X 702 1E34 20 A0 1E JSR OUTCH 703 1E37 CA DEX 704 1E38 10 F7 BPL PRTST STOP ON INDEX ZERO 705 1E3A 60 RTS 706 ; ** PRINT 1 HEX BYTE AS 2 ASCII CHARS ** 707 1E3B 85 FC PRTBYT STA TEMP 1E3B 708 1E3D 4A LSR A SHIFT CHAR RIGHT 4 BITS 709 1E3E 4A LSR A 710 1E3F 4A LSR A 711 1E40 4A LSR A 712 1E41 20 4C 1E JSR HEXTA CONVERT TO HEX AND PRINT 713 1E44 A5 FC LDA TEMP GET OTHER HALF 714 1E46 20 4C 1E JSR HEXTA CONVERT TO HEX AND PRINT 715 1E49 A5 FC LDA TEMP RESTORE BYTE IN A AND RETURN 716 1E4B 60 RTS 717 1E4C 29 0F HEXTA AND #$0F MASK HI 4 BITS 718 1E4E C9 0A CMP #$0A 719 1E50 18 CLC 720 1E51 30 02 BMI HEXTA1 721 1E53 69 07 ADC #$07 ALPHA HEX 722 1E55 69 30 HEXTA1 ADC #$30 DEC HEX 723 1E57 4C A0 1E JMP OUTCH PRINT CHAR 724 ; ** GET 1 CHAR FROM TTY, CHAR IN A 725 1E5A 86 FD GETCH STX TMPX SAVE X REG 1E5A 726 1E5C A2 08 LDX #$08 SET UP 8-BIT COUNT 727 1E5E A9 01 LDA #$01 728 1E60 2C 40 17 GET1 BIT SAD 729 1E63 D0 22 BNE GET6 730 1E65 30 F9 BMI GET1 WAIT FOR START BIT 731 1E67 20 D4 1E JSR DELAY DELAY 1 BIT 732 1E6A 20 EB 1E GET5 JSR DEHALF DELAY 1/2 BIT TIME 733 1E6D AD 40 17 GET2 LDA SAD GET 8 BITS 734 1E70 29 80 AND #$80 MASK OFF LOW ORDER BITS 735 1E72 46 FE LSR CHAR SHIFT RIGHT CHAR 736 1E74 05 FE ORA CHAR 737 1E76 85 FE STA CHAR 738 1E78 20 D4 1E JSR DELAY DELAY 1 BIT TIME 739 1E7B CA DEX 740 1E7C D0 EF BNE GET2 GET NEXT CHAR 741 1E7E 20 EB 1E JSR DEHALF EXIT THIS ROUTINE 742 1E81 A6 FD LDX TMPX 743 1E83 A5 FE LDA CHAR 744 1E85 2A ROL A SHIFT OFF PARITY 745 1E86 4A LSR A 746 1E87 60 GET6 RTS KIM.ASM 6502 CROSS-ASSEMBLER ver 1.0rmb 12-17-1981 Page 14 LINE LOC INSTR SOURCE CODE 747 ; ** INITIALIZATION FOR SIGMA ** 748 1E88 A2 01 INITS LDX #$01 SET KB MODE TO ADDR 1E88 749 1E8A 86 FF STX MODE 750 1E8C A2 00 INIT1 LDX #$00 751 1E8E 8E 41 17 STX PADD FOR SIGMA USE SADD 752 1E91 A2 3F LDX #$3F 753 1E93 8E 43 17 STX PBDD FOR SIGMA USE SBDD 754 1E96 A2 07 LDX #$07 ENABLE DATA IN 755 1E98 8E 42 17 STX SBD OUTPUT 756 1E9B D8 CLD 757 1E9C 78 SEI 758 1E9D 60 RTS 759 ; ** PRINT ONE CHAR IN A ** 760 1E9E A9 20 OUTSP LDA #$20 PRINT SPACE 1E9E 761 1EA0 85 FE OUTCH STA CHAR 762 1EA2 86 FD STX TMPX 763 1EA4 20 D4 1E JSR DELAY DELAY 10/11 BIT CODE SYNC 764 1EA7 AD 42 17 LDA SBD START BIT 765 1EAA 29 FE AND #$FE 766 1EAC 8D 42 17 STA SBD 767 1EAF 20 D4 1E JSR DELAY 768 1EB2 A2 08 LDX #$08 769 1EB4 AD 42 17 OUT1 LDA SBD DATA BIT 770 1EB7 29 FE AND #$FE 771 1EB9 46 FE LSR CHAR 772 1EBB 69 00 ADC #$00 773 1EBD 8D 42 17 STA SBD 774 1EC0 20 D4 1E JSR DELAY 775 1EC3 CA DEX 776 1EC4 D0 EE BNE OUT1 777 1EC6 AD 42 17 LDA SBD STOP BIT 778 1EC9 09 01 ORA #$01 779 1ECB 8D 42 17 STA SBD 780 1ECE 20 D4 1E JSR DELAY STOP BIT 781 1ED1 A6 FD LDX TMPX RESTORE INDEX 782 1ED3 60 RTS 783 ; ** DELAY 1 BIT TIME ** 784 1ED4 AD F3 17 DELAY LDA CNTH30 1ED4 785 1ED7 8D F4 17 STA TIMH 786 1EDA AD F2 17 LDA CNTL30 787 1EDD 38 DE2 SEC 788 1EDE E9 01 DE4 SBC #$01 789 1EE0 B0 03 BCS DE3 790 1EE2 CE F4 17 DEC TIMH 791 1EE5 AC F4 17 DE3 LDY TIMH 792 1EE8 10 F3 BPL DE2 793 1EEA 60 RTS 794 ; ** DELAY 1/2 BIT TIME ** 795 1EEB AD F3 17 DEHALF LDA CNTH30 1EEB 796 1EEE 8D F4 17 STA TIMH 797 1EF1 AD F2 17 LDA CNTL30 798 1EF4 4A LSR A 799 1EF5 4E F4 17 LSR TIMH 800 1EF8 90 E3 BCC DE2 801 1EFA 09 80 ORA #$80 802 1EFC B0 E0 BCS DE4 803 ; ** SUB TO DETERMINE IF KEY IS DEPRESSED OR KIM.ASM 6502 CROSS-ASSEMBLER ver 1.0rmb 12-17-1981 Page 15 LINE LOC INSTR SOURCE CODE 804 ; CONDITION OF SSW KEY NOT DEPRESSED OR 805 ; TTY MODE A=0 806 ; KEY DEPRESSED OR KB MODE A NOT ZERO 807 1EFE A0 03 AK LDY #$03 3 ROWS 808 1F00 A2 01 LDX #$01 DIGIT 0 809 1F02 A9 FF ONEKEY LDA #$FF 810 1F04 8E 42 17 AK1 STX SBD OUTPUT DIGIT 811 1F07 E8 INX GET NEXT DIGIT 812 1F08 E8 INX 813 1F09 2D 40 17 AND SAD INPUT SEGMENTS 814 1F0C 88 DEY 815 1F0D D0 F5 BNE AK1 816 1F0F A0 07 LDY #$07 817 1F11 8C 42 17 STY SBD 818 1F14 09 80 ORA #$80 819 1F16 49 FF EOR #$FF 820 1F18 60 RTS 821 ; ** OUTPUT TO 7-SEGMENT DISPLAY ** 822 1F19 A0 00 SCAND LDY #$00 GET DATA 1F19 823 1F1B B1 FA LDA (POINTL),Y SPECIFIED BY POINT 824 1F1D 85 F9 STA INH SET UP DISPLAY BUFFER 825 1F1F A9 7F LDA #$7F CHANGE SEG 826 1F21 8D 41 17 STA PADD TO OUTPUT 827 1F24 A2 09 LDX #$09 INIT DIGIT NUMBER 828 1F26 A0 03 LDY #$03 OUTPUT 3 BYTES 829 1F28 B9 F8 00 SCAND1 LDA INL,Y GET BYTE 830 1F2B 4A LSR A GET MSD 831 1F2C 4A LSR A 832 1F2D 4A LSR A 833 1F2E 4A LSR A 834 1F2F 20 48 1F JSR CONVD OUTPUT CHAR 835 1F32 B9 F8 00 LDA INL,Y GET BYTE AGAIN 836 1F35 29 0F AND #$0F GET LSD 837 1F37 20 48 1F JSR CONVD OUTPUT CHAR 838 1F3A 88 DEY SET UP FOR NEXT BYTE 839 1F3B D0 EB BNE SCAND1 840 1F3D 8E 42 17 STX SBD ALL DIGITS OFF 841 1F40 A9 00 LDA #$00 CHANGE SEGMENT 842 1F42 8D 41 17 STA PADD TO INPUTS 843 1F45 4C FE 1E JMP AK GET ANY KEY 844 ; ** CONVERT AND DISPLAY HEX (USED BY SCAND ONLY)** 845 1F48 84 FC CONVD STY TEMP 846 1F4A A8 TAY SAVE Y 847 1F4B B9 E7 1F LDA TABLE,Y USE CHAR AS INDEX 848 1F4E A0 00 LDY #$00 LOOKUP CONVERSION 849 1F50 8C 40 17 STY SAD TURN OFF SEGMENTS 850 1F53 8E 42 17 STX SBD OUTPUT DIGIT ENABLE 851 1F56 8D 40 17 STA SAD OUTPUT SEGMENTS 852 1F59 A0 7F LDY #$7F DELAY 500 CYCLES 853 1F5B 88 CONVD1 DEY 854 1F5C D0 FD BNE CONVD1 855 1F5E E8 INX GET NEXT DIGIT NUMBER 856 1F5F E8 INX ADD 2 857 1F60 A4 FC LDY TEMP RESTORE Y 858 1F62 60 RTS 859 ; ** INCREMENT POINT ** 860 1F63 E6 FA INCPT INC POINTL KIM.ASM 6502 CROSS-ASSEMBLER ver 1.0rmb 12-17-1981 Page 16 LINE LOC INSTR SOURCE CODE 861 1F65 D0 02 BNE INCPT2 862 1F67 E6 FB INC POINTH 863 1F69 60 INCPT2 RTS 864 ; ** GET KEY FROM KEYPAD A=KEYVALUE ** 865 1F6A A2 21 GETKEY LDX #$21 START AT DIGIT 0 1F6A 866 1F6C A0 01 GETKE5 LDY #$01 GET 1 ROW 867 1F6E 20 02 1F JSR ONEKEY 868 1F71 D0 07 BNE KEYIN A=0 NO KEY 869 1F73 E0 27 CPX #$27 TEST FOR DIGIT 2 870 1F75 D0 F5 BNE GETKE5 871 1F77 A9 15 LDA #$15 15=NOKEY 872 1F79 60 RTS 873 1F7A A0 FF KEYIN LDY #$FF 874 1F7C 0A KEYIN1 ASL A SHIFT LEFT 875 1F7D B0 03 BCS KEYIN2 UNTIL Y=KEY NO 876 1F7F C8 INY 877 1F80 10 FA BPL KEYIN1 878 1F82 8A KEYIN2 TXA 879 1F83 29 0F AND #$0F MASK MSD 880 1F85 4A LSR A DIVIDE BY 2 881 1F86 AA TAX 882 1F87 98 TYA 883 1F88 10 03 BPL KEYIN4 884 1F8A 18 KEYIN3 CLC 885 1F8B 69 07 ADC #$07 MULT (X-1 TIMES A 886 1F8D CA KEYIN4 DEX 887 1F8E D0 FA BNE KEYIN3 888 1F90 60 RTS 889 ; ** COMPUTE CHECKSUM ** 890 1F91 18 CHK CLC 891 1F92 65 F7 ADC CHKSUM 892 1F94 85 F7 STA CHKSUM 893 1F96 A5 F6 LDA CHKHI 894 1F98 69 00 ADC #$00 895 1F9A 85 F6 STA CHKHI 896 1F9C 60 RTS 897 ; ** GET 2 HEX CHARS AND PACK INTO INL AND INH ** 898 1F9D 20 5A 1E GETBYT JSR GETCH 899 1FA0 20 AC 1F JSR PACK 900 1FA3 20 5A 1E JSR GETCH 901 1FA6 20 AC 1F JSR PACK 902 1FA9 A5 F8 LDA INL 903 1FAB 60 RTS 904 ; ** SHIFT CHAR IN A INTO INL AND INH ** 905 1FAC C9 30 PACK CMP #$30 CHECK FOR HEX 1FAC 906 1FAE 30 1B BMI UPDAT2 907 1FB0 C9 47 CMP #$47 NOT HEX EXIT 908 1FB2 10 17 BPL UPDAT2 909 1FB4 C9 40 CMP #$40 CONVERT TO HEX 910 1FB6 30 03 BMI UPDATE 911 1FB8 18 CLC 912 1FB9 69 09 ADC #$09 913 1FBB 2A UPDATE ROL A 914 1FBC 2A ROL A 915 1FBD 2A ROL A 916 1FBE 2A ROL A 917 1FBF A0 04 LDY #$04 SHIFT INTO I/O BUFFER KIM.ASM 6502 CROSS-ASSEMBLER ver 1.0rmb 12-17-1981 Page 17 LINE LOC INSTR SOURCE CODE 918 1FC1 2A UPDAT1 ROL A 919 1FC2 26 F8 ROL INL 920 1FC4 26 F9 ROL INH 921 1FC6 88 DEY 922 1FC7 D0 F8 BNE UPDAT1 923 1FC9 A9 00 LDA #$00 A=0 IF HEX NUM 924 1FCB 60 UPDAT2 RTS 925 ; 926 1FCC A5 F8 OPEN LDA INL MOVE I/O BUFFER TO POINT 927 1FCE 85 FA STA POINTL 928 1FD0 A5 F9 LDA INH TRANSFER INH- POINTH 929 1FD2 85 FB STA POINTH 930 1FD4 60 RTS 931 ; 932 ; ** TABLES ** 933 1FD5 00 00 TOP .DBYTE $0000,$0000,$0000,$0A0D 1FD5 934 1FD7 00 00 935 1FD9 00 00 936 1FDB 0A 0D 938 1FDD 4D .BYTE 'M,'I,'K,$20,$13 KIM 939 1FDE 49 940 1FDF 4B 941 1FE0 20 942 1FE1 13 944 1FE2 52 .BYTE 'R,'R,'E,$20,$13 ERR 945 1FE3 52 946 1FE4 45 947 1FE5 20 948 1FE6 13 950 1FE7 BF 86 TABLE .DBYTE $BF86,$DBCF,$E6ED,$FD87 ;0-7 1FE7 951 1FE9 DB CF 952 1FEB E6 ED 953 1FED FD 87 955 1FEF FF EF .DBYTE $FFEF,$F7FC,$B9DE,$F9F1 ;8-F HEX TO 7-SEG 956 1FF1 F7 FC 957 1FF3 B9 DE 958 1FF5 F9 F1 960 ; 961 ; ** INTERRUPT VECTORS ** 962 *= $1FFA 963 1FFA 1C 1C NMIENT .WORD NMIT 965 1FFC 22 1C RSTENT .WORD RST 967 1FFE 1F 1C IRQENT .WORD IRQT 969 .END No Errors found above. KIM.ASM SYMBOL TABLE DUMP ACC 00F3 DET3 1C3A INTVEB 1932 OUT1 1EB4 SAH 17F6 ADDR 1CBE DUMP 1D42 IRQENT 1FFE OUTBT 1961 SAL 17F5 ADDRM 1CC8 DUMP0 1D48 IRQP27 1BFE OUTBTC 195E SAVE 1C00 AK 1EFE DUMP2 1D86 IRQT 1C1F OUTCH 1EA0 SAVX 17E9 AK1 1F04 DUMP3 1DA6 IRQV 17FE OUTCHT 197A SBD 1742 CHAR 00FE DUMP4 1D7A KEYIN 1F7A OUTSP 1E9E SCAN 1DDB CHK 1F91 DUMPT 1800 KEYIN1 1F7C PACK 1FAC SCAND 1F19 CHKH 17E8 DUMPT1 1814 KEYIN2 1F82 PACKT 1A00 SCAND1 1F28 CHKHI 00F6 DUMPT2 1833 KEYIN3 1F8A PACKT1 1A0F SHOW 1DAC CHKL 17E7 DUMPT3 1854 KEYIN4 1F8D PACKT2 1A15 SHOW1 1DAF CHKSUM 00F7 DUMPT4 1865 LOAD 1CE7 PACKT3 1A22 SPACE 1DA9 CHKT 194C DUMPV 1E01 LOAD10 192B PADD 1741 SPUSER 00F2 CHT1 1982 EAH 17F8 LOAD11 18C2 PBDD 1743 START 1C4F CHT2 198E EAL 17F7 LOAD12 190F PCCMD 1CDC STEP 1CD3 CHT3 1991 FEED 1E07 LOAD13 18FA PCH 00F0 STV 1DFE CLEAR 1C64 FEED1 1E12 LOAD2 1D0E PCL 00EF SYNC 1891 CLK1T 1744 GET1 1E60 LOAD3 1D1D PLL1 1A75 SYNC1 1896 CLK64T 1746 GET2 1E6D LOAD8 1D30 PLL2 1A84 SYNC2 18AB CLK8T 1745 GET5 1E6A LOADE1 1D3B PLLCAL 1A6B TAB 1871 CLKKT 1747 GET6 1E87 LOADER 1D3E POINTH 00FB TABLE 1FE7 CLKRDI 1747 GETBYT 1F9D LOADT 1873 POINTL 00FA TEMP 00FC CLKRDT 1746 GETCH 1E5A LOADT4 18B5 PREG 00F1 TIMH 17F4 CNTH30 17F3 GETKE5 1F6C LOADT5 18D7 PRTBYT 1E3B TMPX 00FD CNTL30 17F2 GETKEY 1F6A LOADT6 18EC PRTPNT 1E1E TOP 1FD5 CONVD 1F48 GOEXEC 1DC8 LOADT7 18F8 PRTST 1E31 TTYKB 1C77 CONVD1 1F5B GOV 1CD9 LOADT8 1915 RDBIT 1A41 TTYKB1 1C7C CRLF 1E2F HEX1 1978 LOADT9 1929 RDBIT2 1A53 UPDAT1 1FC1 DATA1 1CB0 HEXOUT 196F LOADV 1E04 RDBIT3 1A50 UPDAT2 1FCB DATA2 1CC3 HEXTA 1E4C MODE 00FF RDBIT4 1A63 UPDATE 1FBB DATAM 1CCC HEXTA1 1E55 MODIFY 1E15 RDBYT 19F3 VEB 17EC DATAM1 1CCE ID 17F9 NMIENT 1FFA RDCHT 1A24 XREG 00F5 DATAM2 1CD0 INCPT 1F63 NMIP27 1BFA RDCHT1 1A29 YREG 00F4 DE2 1EDD INCPT2 1F69 NMIT 1C1C READ 1C6A ZRO 19C4 DE3 1EE5 INCVE1 19F2 NMIV 17FA RST 1C22 ZRO1 19C7 DE4 1EDE INCVEB 19EA ONE 199E RSTENT 1FFC ZRO2 19D6 DEHALF 1EEB INH 00F9 ONE1 19A1 RSTP27 1BFC DELAY 1ED4 INIT1 1E8C ONE2 19B0 RSTV 17FC DET1 1C31 INITS 1E88 ONEKEY 1F02 RTRN 1DC2 DET2 1C42 INL 00F8 OPEN 1FCC SAD 1740 191 Labels listed