1 ; BOOT MONITOR 2 ; 3 ; REBASE HIGHER LINK/BOT:140000 4 ; WANT PERFORMANCE COUNTER - CLOCK TICKS TO DO SOMETHING? 5 6 177546 KW11LKS = 177546 7 000100 KW11VEC = 100 8 9 177560 DL11RCSR = 177560 10 177562 DL11RBUF = 177562 11 177564 DL11XCSR = 177564 12 177566 DL11XBUF = 177566 13 000064 DL11VEC = 64 14 15 177776 PSW = 177776 16 17 .ASECT 18 140000 .=140000 19 140000 000005 START: RESET 20 140002 005037 177776 CLR @#PSW 21 140006 012706 140000 MOV #START,SP 22 140012 005037 177564 CLR @#DL11XCSR ; CLEAR THE XCSR 23 140016 012700 141144 MOV #BANNER,R0 24 140022 004767 140150' JSR PC,PRINT 25 140026 012737 140124 000100 MOV #CLKAST,@#KW11VEC 26 140034 012737 000340 000102 MOV #340,@#KW11VEC+2 27 140042 052737 000100 177546 BIS #100,@#KW11LKS ; SET CLOCK TICKING 28 29 140050 012700 141174 MOV #PROMPT,R0 30 140054 004767 140150' JSR PC,PRINT 31 140060 162706 000256 SUB #256,SP 32 140064 010600 MOV SP,R0 33 140066 004767 140244' JSR PC,INPUT 34 140072 005000 CLR R0 35 140074 000001 1$: WAIT 36 140076 005200 INC R0 37 140100 005767 140120' TST LGHTON 38 140104 001773 BEQ 1$ 39 140106 012746 054000 MOV #054000,-(SP) ; SUPER PRIORITY 0 ALT REG 40 140112 016746 140120' MOV LGHTON,-(SP) ; CALL SUPER LOOP START 41 140116 000002 RTI 42 43 140120 000000 LGHTON: .WORD 0 44 140122 000000 CLKTIC: .WORD 0 45 46 CLKAST: 47 140124 005267 140122' INC CLKTIC 48 140130 000002 RTI 49 50 ONECHR: 51 140132 105737 177564 TSTB @#DL11XCSR 52 140136 100375 BPL ONECHR 53 140140 110037 177566 MOVB R0,@#DL11XBUF 54 140144 000207 RTS PC 55 56 140146 000000 PRTPTR: .WORD 0 57 58 PRINT: 59 140150 132737 000100 177564 BITB #100,@#DL11XCSR 60 140156 001374 BNE PRINT 61 140160 010067 140146' MOV R0,PRTPTR 62 140164 012737 140210 000064 MOV #PRTAST,@#DL11VEC 63 140172 012737 000200 000066 MOV #200,@#DL11VEC+2 64 140200 152737 000100 177564 BISB #100,@#DL11XCSR 65 140206 000207 RTS PC 66 67 PRTAST: 68 140210 105777 140146' TSTB @PRTPTR 69 140214 001406 BEQ 2$ 70 140216 117737 140146' 177566 MOVB @PRTPTR,@#DL11XBUF 71 140224 005267 140146' INC PRTPTR 72 140230 000002 RTI 73 140232 105037 177564 2$: CLRB @#DL11XCSR 74 140236 000002 RTI 75 76 140240 000000 BUFFER: .WORD 0 ; INPUT BUFFER POINTER 77 140242 000000 LENGTH: .WORD 0 ; INPUT BUFFER LENGTH 78 79 INPUT: 80 140244 010067 140240' MOV R0,BUFFER 81 140250 005067 140242' CLR LENGTH 82 140254 012737 140300 000060 MOV #INPAST,@#60 83 140262 012737 000200 000062 MOV #200,@#62 84 140270 152737 000100 177560 BISB #100,@#DL11RCSR 85 140276 000207 RTS PC 86 87 INPAST: 88 140300 010046 MOV R0,-(SP) 89 140302 113700 177562 MOVB @#DL11RBUF,R0 90 140306 042737 000340 177776 BIC #340,@#PSW ; HACK TO PERMIT XBUF INTERRUPTS WHILE RBUF INTERRUPT HANDLER STILL RUNNING 91 140314 120027 000015 CMPB R0,#15 92 140320 001455 BEQ 7$ ; CARRIAGE RETURN 93 140322 120027 000177 CMPB R0,#127. 94 140326 001403 BEQ 2$ ; 95 140330 120027 000010 CMPB R0,#10 96 140334 001012 BNE 4$ ; BACK SPACE 97 140336 005767 140242' 2$: TST LENGTH ; DATA IN BUFFER? 98 140342 001406 BEQ 3$ 99 140344 005367 140242' DEC LENGTH ; LENGTH 100 140350 012700 141055 MOV #DEL,R0 101 140354 004767 140150' JSR PC,PRINT 102 140360 000453 3$: BR 9$ 103 140362 120027 000040 4$: CMPB R0,#40 104 140366 002450 BLT 9$ ; BELOW SPACE 105 140370 120027 000177 CMPB R0,#177 106 140374 002045 BGE 9$ ; SKIP STUFF TOO BIG 107 140376 004767 140132' JSR PC,ONECHR ; ECHO CHAR 108 140402 120027 000172 CMPB R0,#172 109 140406 003005 BGT 5$ ; ABOVE Z 110 140410 120027 000141 CMPB R0,#141 111 140414 002402 BLT 5$ ; BELOW A 112 140416 142700 000040 BICB #40,R0 ; CONVERT TO UPPER CASE 113 140422 026727 140242' 000254 5$: CMP LENGTH,#254 114 140430 002027 BGE 9$ 115 140432 110046 MOVB R0,-(SP) 116 140434 016700 140240' MOV BUFFER,R0 117 140440 066700 140242' ADD LENGTH,R0 118 140444 112610 MOVB (SP)+,(R0) 119 140446 005267 140242' INC LENGTH 120 140452 000416 BR 9$ 121 122 140454 016700 140240' 7$: MOV BUFFER,R0 123 140460 066700 140242' ADD LENGTH,R0 124 140464 105010 CLRB (R0) 125 140466 012737 140514 000240 MOV #CMD,@#240 ; CALL CMD AT PRIORITY 2 126 140474 012737 000100 000242 MOV #100,@#242 127 140502 012737 002000 177772 MOV #2000,@#177772 128 140510 012600 9$: MOV (SP)+,R0 129 140512 000002 RTI 130 131 CMD: 132 140514 005037 177772 CLR @#177772 ; NO MORE PIR CALLS 133 140520 010046 MOV R0,-(SP) 134 140522 010146 MOV R1,-(SP) 135 140524 010246 MOV R2,-(SP) 136 140526 010346 MOV R3,-(SP) 137 140530 010446 MOV R4,-(SP) 138 140532 012700 141052 MOV #EOL,R0 139 140536 004767 140150' JSR PC,PRINT 140 140542 132737 000100 177564 1$: BITB #100,@#DL11XCSR 141 140550 001374 BNE 1$ 142 140552 005004 CLR R4 143 140554 012703 141061 MOV #CMDLST,R3 ; CMD LIST 144 140560 112300 3$: MOVB (R3)+,R0 145 140562 001431 BEQ 13$ 146 140564 016702 140240' MOV BUFFER,R2 ; USER CMD 147 140570 112201 4$: MOVB (R2)+,R1 148 140572 001431 BEQ 15$ ; NULL COMMAND? 149 140574 120127 000040 CMPB R1,#40 150 140600 001773 BEQ 4$ ; SKIP SPACE 151 140602 120001 5$: CMPB R0,R1 152 140604 001010 BNE 7$ 153 140606 112300 MOVB (R3)+,R0 154 140610 001412 BEQ 9$ 155 140612 112201 MOVB (R2)+,R1 156 140614 001410 BEQ 9$ 157 140616 120127 000040 CMPB R1,#40 158 140622 001367 BNE 5$ 159 140624 000404 BR 9$ 160 140626 112300 7$: MOVB (R3)+,R0 161 140630 001376 BNE 7$ 162 140632 005204 INC R4 163 140634 000751 BR 3$ 164 140636 006304 9$: ASL R4 165 140640 004774 140706 JSR PC,@CMDTBL(R4) ; EXECUTE 166 140644 000404 BR 15$ 167 168 140646 012700 141122 13$: MOV #UNKMSG,R0 169 140652 004767 140150' JSR PC,PRINT 170 171 140656 005067 140242' 15$: CLR LENGTH 172 140662 012700 141174 MOV #PROMPT,R0 173 140666 004767 140150' JSR PC,PRINT 174 140672 012604 MOV (SP)+,R4 175 140674 012603 MOV (SP)+,R3 176 140676 012602 MOV (SP)+,R2 177 140700 012601 MOV (SP)+,R1 178 140702 012600 MOV (SP)+,R0 179 140704 000002 RTI 180 181 182 140706 142664 141312 141326 CMDTBL: .WORD BOOT,HALT,TEST,DIAG,LIGHTS,HELP 140714 141434 142200 141300 183 140722 103 117 115 HLPMSG: .ASCIZ 'COMMANDS ARE BOOT, HALT, TEST, DIAG, LIGHTS AND HELP'<15><12>'BOOT DEVICES ARE RK? RL? OR RP?'<15><12> 140725 115 101 116 140730 104 123 040 140733 101 122 105 140736 040 102 117 140741 117 124 054 140744 040 110 101 140747 114 124 054 140752 040 124 105 140755 123 124 054 140760 040 104 111 140763 101 107 054 140766 040 114 111 140771 107 110 124 140774 123 040 101 140777 116 104 040 141002 110 105 114 141005 120 015 012 141010 102 117 117 141013 124 040 104 141016 105 126 111 141021 103 105 123 141024 040 101 122 141027 105 040 122 141032 113 077 040 141035 122 114 077 141040 040 117 122 141043 040 122 120 141046 077 015 012 141051 000 184 141052 015 012 000 EOL: .BYTE 15,12,0 185 141055 010 040 010 DEL: .BYTE 10,40,10,0 141060 000 186 141061 102 117 117 CMDLST: .ASCIZ 'BOOT' 141064 124 000 187 141066 110 101 114 .ASCIZ 'HALT' 141071 124 000 188 141073 124 105 123 .ASCIZ 'TEST' 141076 124 000 189 141100 104 111 101 .ASCIZ 'DIAG' 141103 107 000 190 141105 114 111 107 .ASCIZ 'LIGHTS' 141110 110 124 123 141113 000 191 141114 110 105 114 .ASCIZ 'HELP' 141117 120 000 192 141121 000 .BYTE 0 193 141122 125 116 113 UNKMSG: .ASCIZ 'UNKNOWN COMMAND'<12><15> 141125 116 117 127 141130 116 040 103 141133 117 115 115 141136 101 116 104 141141 012 015 000 194 141144 120 104 120 BANNER: .ASCIZ 'PDP-11 MONITOR V1.0'<12><15><12><15> 141147 055 061 061 141152 040 115 117 141155 116 111 124 141160 117 122 040 141163 126 061 056 141166 060 012 015 141171 012 015 000 195 ; 'ADAPTED FROM CODE BY PAUL NANKERVIS '<12><15><12><15> 196 141174 102 117 117 PROMPT: .ASCIZ 'BOOT> ' 141177 124 076 040 141202 000 197 141203 125 116 113 BADBOO: .ASCIZ 'UNKNOWN BOOT DEVICE'<12><15> 141206 116 117 127 141211 116 040 102 141214 117 117 124 141217 040 104 105 141222 126 111 103 141225 105 012 015 141230 000 198 141231 040 040 040 PERMSG: .ASCIZ ' CLOCK TICKS'<12><15> 141234 040 040 040 141237 103 114 117 141242 103 113 040 141245 124 111 103 141250 113 123 012 141253 015 000 199 141255 040 040 040 LOOMSG: .ASCIZ ' ITERATIONS'<12><15> 141260 040 040 040 141263 111 124 105 141266 122 101 124 141271 111 117 116 141274 123 012 015 141277 000 200 201 .EVEN 202 203 HELP: 204 141300 012700 140722 MOV #HLPMSG,R0 205 141304 004767 140150' JSR PC,PRINT 206 141310 000207 RTS PC 207 208 HALT: 209 141312 000000 HALT 210 141314 012700 141052 MOV #EOL,R0 211 141320 004767 140150' JSR PC,PRINT 212 141324 000207 RTS PC 213 214 TEST: 215 141326 005067 140122' CLR CLKTIC 216 217 141332 012705 015000 MOV #15000,R5 218 141336 010537 177570 10$: MOV R5,@#177570 ; DISPLAY 219 141342 010504 MOV R5,R4 220 141344 006204 ASR R4 221 141346 005000 15$: CLR R0 222 141350 010501 MOV R5,R1 223 141352 071004 DIV R4,R0 224 141354 010002 MOV R0,R2 225 141356 070204 MUL R4,R2 226 141360 060301 ADD R3,R1 227 141362 020105 CMP R1,R5 228 141364 001401 BEQ 20$ 229 141366 000000 HALT 230 141370 077412 20$: SOB R4,15$ 231 141372 077517 SOB R5,10$ 232 233 141374 012700 141236 MOV #PERMSG+5,R0 234 141400 016703 140122' MOV CLKTIC,R3 235 236 141404 005002 25$: CLR R2 237 141406 071227 000010 DIV #10,R2 238 141412 062703 000060 ADD #'0,R3 239 141416 110340 MOVB R3,-(R0) 240 141420 010203 MOV R2,R3 241 141422 001370 BNE 25$ 242 243 141424 004767 140150' JSR PC,PRINT 244 141430 000207 RTS PC 245 246 141432 000000 LOOCNT: .WORD 0 247 248 DIAG: 249 141434 005067 141432' CLR LOOCNT 250 141440 005067 140122' CLR CLKTIC 251 DIAGLP: 252 141444 005005 CLR R5 253 141446 100404 BMI L1 254 141450 102403 BVS L1 255 141452 101002 BHI L1 256 141454 002401 BLT L1 257 141456 101401 BLOS L2 258 141460 000000 L1: HALT 259 260 141462 005305 L2: DEC R5 261 141464 100003 BPL L3 262 141466 001402 BEQ L3 263 141470 002001 BGE L3 264 141472 003401 BLE L4 265 141474 000000 L3: HALT 266 267 141476 006005 L4: ROR R5 268 141500 102002 BVC L5 269 141502 103001 BCC L5 270 141504 001001 BNE L6 271 141506 000000 L5: HALT 272 273 141510 112737 000017 177776 L6: MOVB #17,@#177776 274 141516 100004 BPL L7 275 141520 102003 BVC L7 276 141522 002402 BLT L7 277 141524 101001 BHI L7 278 141526 100401 BMI L8 279 141530 000000 L7: HALT 280 281 141532 012703 077777 L8: MOV #77777,R3 282 141536 062703 077777 ADD #77777,R3 283 141542 123727 177776 000005 CMPB @#177776,#5 284 141550 001001 BNE L9 285 141552 000000 HALT 286 287 141554 112704 001700 L9: MOVB #1700,R4 288 141560 100003 BPL L10 289 141562 020427 177700 CMP R4,#177700 290 141566 001401 BEQ L11 291 141570 000000 L10: HALT 292 293 141572 105004 L11: CLRB R4 294 141574 020427 177400 CMP R4,#177400 295 141600 001401 BEQ L12 296 141602 000000 HALT 297 298 141604 012705 125252 L12: MOV #125252,R5 299 141610 010500 MOV R5,R0 300 141612 010001 MOV R0,R1 301 141614 010102 MOV R1,R2 302 141616 010203 MOV R2,R3 303 141620 010304 MOV R3,R4 304 141622 010405 MOV R4,R5 305 141624 160501 SUB R5,R1 306 141626 002401 BLT NODIAG 307 141630 001401 BEQ L13 308 141632 000000 NODIAG: HALT 309 310 141634 006102 L13: ROL R2 311 141636 103001 BCC L14 312 141640 002401 BLT L15 313 141642 000000 L14: HALT 314 315 141644 060203 L15: ADD R2,R3 316 141646 005203 INC R3 317 141650 005103 COM R3 318 141652 060301 ADD R3,R1 319 141654 103401 BCS L16 320 141656 003401 BLE L17 321 141660 000000 L16: HALT 322 323 141662 006004 L17: ROR R4 324 141664 050403 BIS R4,R3 325 141666 060503 ADD R5,R3 326 141670 005203 INC R3 327 141672 103402 BCS L18 328 141674 005301 DEC R1 329 141676 002401 BLT L19 330 141700 000000 L18: HALT 331 332 141702 005100 L19: COM R0 333 141704 101401 BLOS L20 334 141706 000000 HALT 335 336 141710 040001 L20: BIC R0,R1 337 141712 060101 ADD R1,R1 338 141714 003001 BGT L21 339 141716 003401 BLE L22 340 141720 000000 L21: HALT 341 342 141722 000301 L22: SWAB R1 343 141724 020127 052125 CMP R1,#052125 344 141730 001004 BNE L23 345 141732 030405 BIT R4,R5 346 141734 003002 BGT L23 347 141736 005105 COM R5 348 141740 001001 BNE L24 349 141742 000000 L23: HALT 350 351 141744 112700 177401 L24: MOVB #177401,R0 352 141750 100001 BPL L26 353 141752 000000 L25: HALT 354 355 141754 077002 L26: SOB R0,L25 356 141756 005001 CLR R1 357 141760 005201 L27: INC R1 358 141762 077002 SOB R0,L27 359 141764 005700 TST R0 360 141766 001002 BNE L28 361 141770 005701 TST R1 362 141772 001401 BEQ L29 363 141774 000000 L28: HALT 364 365 141776 012707 142004 L29: MOV #N1,PC 366 142002 000000 HALT 367 368 142004 005727 N1: TST (PC)+ 369 142006 000000 HALT 370 371 142010 012746 142020 N2: MOV #N3,-(SP) 372 142014 000207 RTS PC 373 142016 000000 HALT 374 375 142020 005046 N3: CLR -(SP) 376 142022 012746 142032 MOV #N4,-(SP) 377 142026 000002 RTI 378 142030 000000 HALT 379 380 142032 000137 142040 N4: JMP @#N5 381 142036 000000 HALT 382 383 142040 012705 000003 N5: MOV #3,R5 384 142044 005037 000006 CLR @#6 385 142050 012737 142062 000004 MOV #N6,@#4 386 142056 005745 TST -(R5) 387 142060 000000 HALT 388 142062 062706 000004 N6: ADD #4,SP 389 390 142066 005000 CLR R0 391 142070 012701 007777 MOV #7777,R1 392 142074 010002 N7: MOV R0,R2 393 142076 062702 000005 ADD #5,R2 394 142102 022062 177773 CMP (R0)+,-5(R2) 395 142106 001402 BEQ N8 396 142110 000000 HALT 397 142112 000000 D1: .WORD 0 398 399 142114 077111 N8: SOB R1,N7 400 401 142116 005267 141432' INC LOOCNT 402 142122 103001 BCC 10$ 403 142124 000000 HALT 404 142126 026727 140122' 002200 10$: CMP CLKTIC,#2200 405 142134 101002 BHI 20$ 406 142136 000167 141444' JMP DIAGLP 407 142142 012700 141262 20$: MOV #LOOMSG+5,R0 408 142146 016703 141432' MOV LOOCNT,R3 409 410 142152 005002 25$: CLR R2 411 142154 071227 000010 DIV #10,R2 412 142160 062703 000060 ADD #'0,R3 413 142164 110340 MOVB R3,-(R0) 414 142166 010203 MOV R2,R3 415 142170 001370 BNE 25$ 416 417 142172 004767 140150' JSR PC,PRINT 418 142176 000207 RTS PC 419 420 177572 MMR0=177572 421 177574 MMR1=177574 422 177576 MMR2=177576 423 172516 MMR3=172516 424 425 LIGHTS: 426 142200 012703 077406 MOV #77406,R3 ; DEFAULT PDR 427 142204 005002 CLR R2 428 142206 005001 CLR R1 429 142210 012700 000010 MOV #8.,R0 430 142214 010361 172300 1$: MOV R3,172300(R1) ; KERNEL I PDR 431 142220 010261 172340 MOV R2,172340(R1) ; KERNEL I PAR 432 142224 010361 172320 MOV R3,172320(R1) ; KERNEL D PDR 433 142230 010261 172360 MOV R2,172360(R1) ; KERNEL D PAR 434 142234 010361 172200 MOV R3,172200(R1) ; SUPER I PDR 435 142240 010261 172240 MOV R2,172240(R1) ; SUPER I PAR 436 142244 010361 172220 MOV R3,172220(R1) ; SUPER D PDR 437 142250 010261 172260 MOV R2,172260(R1) ; SUPER D PAR 438 142254 010361 177600 MOV R3,177600(R1) ; USER I PDR 439 142260 010261 177640 MOV R2,177640(R1) ; USER I PAR 440 142264 010361 177620 MOV R3,177620(R1) ; USER D PDR 441 142270 010361 177660 MOV R3,177660(R1) ; USER D PAR 442 142274 062702 000200 ADD #200,R2 443 142300 062701 000002 ADD #2,R1 444 142304 077035 SOB R0,1$ 445 142306 052737 176000 172376 BIS #176000,@#172376 ; KERNEL D POINTS TO I/O SPACE 446 142314 052737 176000 172276 BIS #176000,@#172276 ; SUPER D POINTS TO I/O SPACE 447 142322 052737 176000 177676 BIS #176000,@#177676 ; USER D POINTS TO I/O SPACE 448 142330 012737 000077 172516 MOV #77,@#MMR3 ; 77 FOR 22 BIT 449 142336 012737 000001 177572 MOV #1,@#MMR0 450 451 142344 012737 001700 172244 MOV #1700,@#172244 ; BASE SUPER I (PAR 2) #40000 AT #170000 452 142352 012737 001700 172264 MOV #1700,@#172264 ; BASE SUPER D (PAR 2) #40000 AT #170000 453 142360 012737 010000 177776 MOV #010000,@#177776 ; SET PM TO SUPER 454 455 142366 012703 040200 MOV #40200,R3 ; SUPER CODE ADDRESS 456 142372 012702 142420 MOV #SUPERS,R2 ; ADDRESS SUPER CODE 457 142376 012246 10$: MOV (R2)+,-(SP) 458 142400 006623 MTPI (R3)+ 459 142402 020227 142664 CMP R2,#SUPERE 460 142406 103773 BLO 10$ 461 462 142410 012767 040200 140120' MOV #40200,LGHTON ; CHANGE IDLE TASK 463 142416 000207 RTS PC 464 465 ; 466 ; TO BE COPIED TO SUPER #40200 AT PHYSICAL #170000 467 ; #40000 TO #40200 FOR WAIT & JMP INSTRUCTIONS 468 ; 469 SUPERS: 470 142420 012700 000037 MOV #37,R0 ; LOAD PATTERN 471 142424 012701 174000 MOV #174000,R1 472 142430 032737 000001 177570 BIT #1,@#177570 473 142436 001414 BEQ 10$ 474 142440 012700 007417 MOV #7417,R0 475 142444 010001 MOV R0,R1 476 142446 005101 COM R1 477 142450 032737 000002 177570 BIT #2,@#177570 478 142456 001404 BEQ 10$ 479 142460 012700 036163 MOV #36163,R0 480 142464 012701 037000 MOV #37000,R1 481 142470 010102 10$: MOV R1,R2 482 142472 162702 000002 SUB #2,R2 483 142476 042702 000001 BIC #1,R2 ; WAIT ADDRESS 484 142502 010203 MOV R2,R3 485 142504 042703 177701 BIC #177701,R3 ; ADDRESS OFFSET 486 142510 012763 000001 040000 MOV #0000001,40000(R3) ; WRITE WAIT 487 142516 062703 000002 ADD #2,R3 488 142522 012763 000113 040000 MOV #0000113,40000(R3) ; WRITE JMP (R3) 489 490 142530 010204 MOV R2,R4 491 142532 072427 177772 ASH #-6,R4 492 142536 042704 177600 BIC #177600,R4 493 142542 012705 001700 MOV #1700,R5 494 142546 160405 SUB R4,R5 ; PAR ADDRESS BASE FOR WAIT 495 142550 010204 MOV R2,R4 496 142552 072427 177764 ASH #-12.,R4 497 142556 042704 177761 BIC #177761,R4 ; PAR SELECT OFFSET 498 142562 010564 172240 MOV R5,172240(R4) ; SUPER I SPACE 499 500 142566 010103 MOV R1,R3 501 142570 072327 177764 ASH #-12.,R3 502 142574 042703 177761 BIC #177761,R3 ; PAR SELECT OFFSET 503 142600 020304 CMP R3,R4 ; SAME PAR 504 142602 001412 BEQ 30$ 505 142604 010104 MOV R1,R4 506 142606 072427 177772 ASH #-6,R4 507 142612 042704 177600 BIC #177600,R4 508 142616 012705 001700 MOV #1700,R5 509 142622 160405 SUB R4,R5 ; PAR ADDRESS BASE FOR JMP 510 142624 010563 172240 MOV R5,172240(R3) ; SUPER I SPACE 511 30$: 512 142630 012704 000003 MOV #3,R4 513 142634 063704 177570 ADD @#177570,R4 514 142640 012703 000002 MOV #2,R3 515 142644 060703 ADD PC,R3 516 142646 000112 40$: JMP (R2) 517 142650 077402 SOB R4,40$ 518 142652 010002 MOV R0,R2 519 142654 006002 ROR R2 ; ROTATE PATTERN 520 142656 006101 ROL R1 521 142660 006000 ROR R0 522 142662 000702 BR 10$ 523 SUPERE: 524 525 BOOT: 526 142664 005003 CLR R3 ; UNIT 527 142666 112201 1$: MOVB (R2)+,R1 528 142670 001545 BEQ BOOTRK ; DEFAULT DEVICE IS RK0 529 142672 120127 000040 CMPB R1,#40 530 142676 001773 BEQ 1$ 531 142700 120127 000122 CMPB R1,#'R 532 142704 001405 BEQ 5$ 533 534 142706 012700 141203 MOV #BADBOO,R0 535 142712 004767 140150' JSR PC,PRINT 536 142716 000207 RTS PC 537 538 142720 112201 5$: MOVB (R2)+,R1 ; HOPEFULLY K, L OR P 539 142722 112200 7$: MOVB (R2)+,R0 ; DIGIT 540 142724 001416 BEQ 9$ 541 142726 120027 000040 CMPB R0,#40 542 142732 001413 BEQ 9$ 543 142734 120027 000067 CMPB R0,#'7 544 142740 003031 BGT 11$ 545 142742 162700 000060 SUB #'0,R0 546 142746 002426 BLT 11$ 547 142750 006303 ASL R3 548 142752 006303 ASL R3 549 142754 006303 ASL R3 550 142756 050003 BIS R0,R3 ; PUT DIGIT INTO UNIT 551 142760 000760 BR 7$ 552 142762 005002 9$: CLR R2 553 142764 012722 000137 MOV #137,(R2)+ ; STORE "JMP @#140000" INSTRUCTION AT ADDRESS 0 554 142770 012722 140000 MOV #START,(R2)+ 555 142774 012722 140000 MOV #START,(R2)+ ; STORE #140000 IN VECTOR 4, IN CASE OF TRAP TO 4 556 143000 005022 CLR (R2)+ 557 143002 120127 000113 CMPB R1,#'K 558 143006 001476 BEQ BOOTRK 559 143010 120127 000114 CMPB R1,#'L 560 143014 001410 BEQ BOOTRL 561 143016 120127 000120 CMPB R1,#'P 562 143022 001517 BEQ BOOTRP 563 564 143024 012700 141122 11$: MOV #UNKMSG,R0 565 143030 004767 140150' JSR PC,PRINT 566 143034 000207 RTS PC 567 568 174400 RLCS=174400 569 BOOTRL: 570 143036 000005 RESET 571 143040 000303 SWAB R3 ; UNIT NUMBER 572 143042 012701 174400 MOV #RLCS,R1 ; CSR 573 143046 012761 000013 000004 MOV #13,4(R1) ; CLR ERR 574 143054 052703 000004 BIS #4,R3 ; UNIT+GSTAT 575 143060 010311 MOV R3,(R1) ; ISSUE CMD 576 143062 105711 TSTB (R1) ; WAIT 577 143064 100376 BPL .-2 578 143066 105003 CLRB R3 579 143070 052703 000010 BIS #10,R3 ; UNIT+RDHDR 580 143074 010311 MOV R3,(R1) ; ISSUE CMD 581 143076 105711 TSTB (R1) ; WAIT 582 143100 100376 BPL .-2 583 143102 016102 000006 MOV 6(R1),R2 ; GET HDR 584 143106 042702 000077 BIC #77,R2 ; CLR SECTOR 585 143112 005202 INC R2 ; MAGIC BIT 586 143114 010261 000004 MOV R2,4(R1) ; SEEK TO 0 587 143120 105003 CLRB R3 588 143122 052703 000006 BIS #6,R3 ; UNIT+SEEK 589 143126 010311 MOV R3,(R1) ; ISSUE CMD 590 143130 105711 TSTB (R1) ; WAIT 591 143132 100376 BPL .-2 592 143134 005061 000002 CLR 2(R1) ; CLR BA 593 143140 005061 000004 CLR 4(R1) ; CLR DA 594 143144 012761 177000 000006 MOV #-512.,6(R1) ; SET WC 595 143152 105003 CLRB R3 596 143154 052703 000014 BIS #14,R3 ; UNIT+READ 597 143160 010311 MOV R3,(R1) ; ISSUE CMD 598 143162 105711 TSTB (R1) ; WAIT 599 143164 100376 BPL .-2 600 143166 042711 000377 BIC #377,(R1) 601 143172 005002 CLR R2 602 143174 005003 CLR R3 603 143176 005004 CLR R4 604 143200 005005 CLR R5 605 143202 005007 CLR PC 606 607 177412 RKDA=177412 608 000005 READGO=5 609 BOOTRK: 610 143204 000005 RESET 611 143206 000303 SWAB R3 ; UNIT NUMBER 612 143210 006303 ASL R3 613 143212 006303 ASL R3 614 143214 006303 ASL R3 615 143216 006303 ASL R3 616 143220 006303 ASL R3 617 143222 012701 177412 MOV #RKDA,R1 ; CSR 618 143226 010311 MOV R3,(R1) ; LOAD DA 619 143230 005041 CLR -(R1) ; CLEAR BA 620 143232 012741 177000 MOV #-256.*2,-(R1) ; LOAD WC 621 143236 012741 000005 MOV #READGO,-(R1) ; READ & GO 622 143242 005002 CLR R2 623 143244 005003 CLR R3 624 143246 005004 CLR R4 625 143250 005005 CLR R5 626 143252 105711 TSTB (R1) 627 143254 100376 BPL .-2 628 143256 105011 CLRB (R1) 629 143260 005007 CLR PC 630 631 176700 RPCSR=0176700 632 BOOTRP: 633 143262 000005 RESET 634 143264 012701 176700 MOV #RPCSR, R1 635 143270 012761 000040 000010 MOV #0000040, 10(R1) ; RESET 636 143276 010361 000010 MOV R3, 10(R1) ; SET UNIT 637 143302 012711 000021 MOV #0000021, (R1) ; PACK ACK 638 143306 012761 010000 000032 MOV #0010000, 32(R1) ; 16B MODE 639 143314 012761 177000 000002 MOV #-512., 2(R1) ; SET WC 640 143322 005061 000004 CLR 4(R1) ; CLR BA 641 143326 005061 000006 CLR 6(R1) ; CLR DA 642 143332 005061 000034 CLR 34(R1) ; CLR CYL 643 143336 012711 000071 MOV #0000071, (R1) ; READ 644 143342 105711 TSTB (R1) ; WAIT 645 143344 100376 BPL .-2 646 143346 105011 CLRB (R1) 647 143350 010300 MOV R3,R0 648 143352 005007 CLR PC 649 650 .END START 650