DEBUGS.S (9861B)
1 * debugs 2 EditorDisk = 0 3 org = $fc00 4 load = $4c00 5 lst off 6 *------------------------------- 7 * 8 * " D E B U G S " 9 * 10 * Sits in aux language card--called from auxmem 11 * 12 *------------------------------- 13 org org 14 15 jmp _SHOWPAGE 16 jmp DEBUGKEYS 17 18 clc 19 bcc MOVEAUXLC ;must be relocatable 20 21 jmp _TITLESCREEN 22 23 *------------------------------- 24 * 25 * M O V E A U X L C 26 * (Move to auxiliary language card) 27 * 28 * This code is loaded into mainmem, where MASTER calls it 29 * to move itself & all other aux l.c. stuff to aux l.c. 30 * 31 * WARNING--once in aux l.c. this code is useless! 32 * 33 * Returns control to main l.c. bank 1 34 * 35 *------------------------------- 36 MOVEAUXLC 37 sta $c009 ;ALTZP on (aux l.c.) 38 39 bit $c083 40 bit $c083 ;bank 2 41 42 lda #$d0 43 ldx #$20 44 ldy #$50 45 jsr Tmovemem 46 47 bit $c08b 48 bit $c08b ;bank 1 49 50 do EditorDisk 51 else 52 53 lda #$d0 54 ldx #$50 55 ldy #$60 56 jsr Tmovemem 57 58 fin 59 60 sta $c008 ;ALTZP off (main l.c.) 61 rts 62 63 *------------------------------- 64 * "MOVEMEM" 65 66 dum $00 67 ]dest ds 2 68 ]source ds 2 69 ]endsourc ds 2 70 dend 71 72 movemem sta ]dest+1 73 stx ]source+1 74 sty ]endsourc+1 75 76 ldy #0 77 sty ]dest 78 sty ]source 79 sty ]endsourc 80 81 :loop lda (]source),y 82 sta (]dest),y 83 84 iny 85 bne :loop 86 87 inc ]source+1 88 inc ]dest+1 89 90 lda ]source+1 91 cmp ]endsourc+1 92 bne :loop 93 rts 94 95 Tmovemem = movemem-$fc00+$4c00 96 97 *------------------------------- 98 lastpage ds 1 99 100 _SHOWPAGE jsr pre 101 jsr SHOWPAGE 102 jmp post 103 104 _TITLESCREEN jsr pre 105 jsr TITLESCREEN 106 jmp post 107 108 *------------------------------- 109 pre 110 pha 111 112 jsr saveregs 113 jsr mainmem 114 jsr savezero 115 116 pla 117 ]rts rts 118 119 post 120 jsr loadzero 121 jsr auxmem 122 jmp loadregs 123 124 *------------------------------- 125 mainmem 126 sta $c004 127 sta $c002 128 rts 129 130 *------------------------------- 131 auxmem 132 sta $c005 133 sta $c003 134 ]rts rts 135 136 *------------------------------- 137 regs ds 3 138 *------------------------------- 139 dum $00 140 141 base ds 2 142 tab ds 1 143 line ds 1 144 inverse ds 1 145 bytenum ds 1 146 mempage ds 1 147 oldpage ds 1 148 strptr ds 2 149 xsave ds 1 150 ysave ds 1 151 nextbytenum ds 1 152 direcptr ds 1 153 ztemp ds 1 154 old80col ds 1 155 156 dend 157 158 zerodump = $fa00 ;mainmem 159 pagedump = $fb00 ;mainmem 160 161 eol = $8d ;string delimiter 162 163 *------------------------------- 164 * Keys within routines 165 166 kesc = $9b 167 kpageup = $8b 168 kpagedown = $8a 169 k4kup = $95 170 k4kdown = $88 171 khires = "H" 172 173 *------------------------------- 174 * 175 * D E B U G K E Y S 176 * 177 * In: A = kbd value 178 * 179 *------------------------------- 180 kshowzero = "= 181 kshowpage3 = "\ 182 kshowlastpage = "- 183 184 DEBUGKEYS 185 cmp #kshowzero 186 bne :1 187 188 lda #0 189 jmp _SHOWPAGE 190 191 :1 cmp #kshowpage3 192 bne :4 193 194 lda #3 195 jmp _SHOWPAGE 196 :4 197 cmp #kshowlastpage 198 bne ]rts 199 200 lda lastpage 201 jmp _SHOWPAGE 202 203 *------------------------------- 204 * 205 * S H O W P A G E 206 * 207 * Show page on text page 1; any key to exit 208 * Keys 0-9 to change page # 209 * 210 * In: A = initial page # 211 * 212 *------------------------------- 213 SHOWPAGE 214 pha 215 jsr pretext 216 pla 217 218 newdump ;A = page # 219 jsr PageDump ;dump a page of memory 220 jsr RegsDump ;dump registers 221 222 :loop jsr waitloop 223 224 cmp #"0 225 bcc :1 226 cmp #": 227 bcs :1 228 229 sec 230 sbc #"0 231 jmp newdump ;dump new page 232 233 :1 cmp #kpageup 234 bne :2 235 lda #-1 236 jmp chgpg ;change page 237 238 :2 cmp #kpagedown 239 bne :3 240 lda #1 241 jmp chgpg 242 243 :3 cmp #k4kup 244 bne :4 245 lda #$10 246 jmp chgpg 247 248 :4 cmp #k4kdown 249 bne :5 250 lda #$f0 251 jmp chgpg 252 253 :5 cmp #khires 254 bne :6 255 256 jsr showhires 257 jsr waitloop 258 jsr showtext 259 jmp :loop 260 261 :6 262 :exit 263 jmp posttext 264 265 *------------------------------- 266 * Change page 267 * 268 * In: A = increment 269 * 270 * Lock out pages C0-CF 271 *------------------------------- 272 chgpg 273 sta ztemp 274 275 lda mempage 276 :loop clc 277 adc ztemp 278 279 cmp #$c0 280 bcc :ok 281 cmp #$d0 282 bcc :loop 283 284 :ok sta mempage 285 286 jmp newdump 287 288 *------------------------------- 289 * 290 * P R E T E X T / P O S T T E X T 291 * 292 *------------------------------- 293 pretext 294 lda $c01f ;read 80COL 295 sta old80col 296 297 lda $c01c ;read PAGE2 298 sta oldpage 299 300 jsr textcls 301 302 showtext 303 lda $c054 ;page 1 304 lda $c051 ;text 305 sta $c00c ;40-column 306 307 rts 308 309 *------------------------------- 310 posttext 311 lda mempage 312 sta lastpage ;for next time 313 314 jsr showhires 315 316 lda #$00 ;black 317 jmp cls40 318 319 *------------------------------- 320 * Show orig. hires page 321 322 showhires 323 lda oldpage ;original page 324 bpl :1 ;page 1 325 lda $c055 ;page 2 326 :1 327 lda old80col 328 bpl :2 329 sta $c00d ;80-col on 330 :2 331 lda $c050 ;graphics 332 rts 333 334 *------------------------------- 335 * 336 * P A G E D U M P 337 * 338 * In: A = page # (auxmem) 339 * 340 * Locks out $c0-cf 341 * 342 *------------------------------- 343 PageDump 344 sta mempage 345 346 cmp #$c0 347 bcc :ok 348 cmp #$d0 349 bcs :ok 350 rts ;lock out $c0-cf 351 :ok 352 jsr copypage ;to mainmem 353 354 jsr home 355 jsr normal 356 357 lda #STRpage 358 ldx #>STRpage 359 jsr prline ;"Page " 360 361 lda mempage 362 jsr prhexbyte 363 364 jsr inv 365 366 lda #0 367 sta bytenum 368 369 lda #8 370 sta tab 371 372 :rulerloop 373 lda #" " 374 jsr prchar 375 376 lda bytenum 377 jsr prhexdig 378 379 jsr toggle 380 381 inc bytenum 382 383 lda bytenum 384 cmp #$10 385 bne :rulerloop 386 387 jsr cr 388 jsr cr 389 390 lda #0 391 sta bytenum 392 :nextline 393 jsr normal 394 lda #"$" 395 jsr prchar 396 397 lda mempage 398 jsr prhexbyte 399 400 lda bytenum 401 jsr prhexbyte 402 403 lda #":" 404 jsr prchar 405 406 lda #8 407 sta tab 408 409 * Print next 16 byte values 410 411 lda bytenum 412 tax 413 clc 414 adc #$10 415 sta nextbytenum 416 417 :loop stx xsave 418 419 jsr toggle 420 421 lda pagedump,x 422 jsr prhexbyte 423 424 ldx xsave 425 inx 426 cpx nextbytenum 427 bne :loop 428 429 * Next line 430 431 cpx #0 432 beq :rts 433 stx bytenum 434 435 jsr cr 436 437 jmp :nextline 438 439 :rts rts 440 441 *------------------------------- 442 * 443 * R E G S D U M P 444 * 445 *------------------------------- 446 RegsDump 447 jsr normal 448 449 ldx #19 450 jsr setline 451 452 ldx #0 453 lda #"A" 454 jsr printreg 455 456 ldx #1 457 lda #"X" 458 jsr printreg 459 460 ldx #2 461 lda #"Y" 462 jsr printreg 463 464 rts 465 466 *------------------------------- 467 printreg 468 stx xsave 469 470 jsr prchar 471 inc tab 472 473 lda #"=" 474 jsr prchar 475 inc tab 476 477 ldx xsave 478 lda regs,x 479 jsr prhexbyte 480 481 lda tab 482 clc 483 adc #5 484 sta tab 485 rts 486 487 *------------------------------- 488 * 489 * W A I T L O O P 490 * 491 * Wait for keypress (return in A, hibit set) 492 * 493 *------------------------------- 494 waitloop 495 sta $c010 496 497 :loop lda $c000 498 bpl :loop 499 500 rts 501 502 *------------------------------- 503 * C R 504 *------------------------------- 505 cr 506 lda #0 507 sta tab 508 509 inc line 510 ldx line 511 jmp bascalc 512 513 *------------------------------- 514 * 515 * P R L I N E 516 * 517 * Print a line of normal text 518 * 519 * In: A-X = string ptr 520 * 521 *------------------------------- 522 prline 523 sta strptr 524 stx strptr+1 525 :loop 526 ldy #0 527 lda (strptr),y 528 cmp #eol 529 beq :rts 530 531 jsr prcharn 532 533 inc strptr 534 bne :loop 535 inc strptr+1 536 bne :loop 537 538 :rts rts 539 540 *------------------------------- 541 * 542 * P R H E X B Y T E 543 * 544 * Print a hex byte (in A) 545 * 546 *------------------------------- 547 prhexbyte 548 pha 549 lsr 550 lsr 551 lsr 552 lsr 553 jsr prhexdig 554 555 pla 556 and #$0f 557 jmp prhexdig 558 559 *------------------------------- 560 * 561 * P R H E X D I G 562 * 563 * Print a hex digit (in A) 564 * Trashes X 565 * 566 *------------------------------- 567 prhexdig 568 tax 569 lda hextoasc,x 570 jmp prchar 571 572 *------------------------------- 573 * 574 * P R C H A R 575 * 576 * Print an ASCII character (in A) 577 * 578 *------------------------------- 579 prchar 580 ldy tab 581 and #%00111111 582 ora inverse 583 sta (base),y 584 585 inc tab 586 587 rts 588 589 prcharn ;normal 590 ldy tab 591 sta (base),y 592 593 inc tab 594 595 rts 596 597 *------------------------------- 598 * 599 * H O M E 600 * 601 *------------------------------- 602 home 603 lda #0 604 sta tab 605 606 ldx #0 607 stx line 608 609 jmp bascalc 610 611 *------------------------------- 612 * 613 * I N V E R S E / N O R M A L 614 * 615 *------------------------------- 616 normal 617 lda #$80 618 sta inverse 619 rts 620 621 inv 622 lda #0 623 sta inverse 624 rts 625 626 toggle 627 lda inverse 628 eor #$80 629 sta inverse 630 rts 631 632 *------------------------------- 633 * 634 * S E T L I N E 635 * 636 * In: X = line # 637 * 638 *------------------------------- 639 setline 640 lda #0 641 sta tab 642 643 stx line 644 645 *------------------------------- 646 * 647 * B A S C A L C 648 * 649 * In: X = line # (0-24) 650 * 651 *------------------------------- 652 bascalc 653 cpx #24 654 bcs :rts 655 656 lda textl,x 657 sta base 658 659 lda texth,x 660 sta base+1 661 662 :rts rts 663 664 *------------------------------- 665 * 666 * T E X T C L S 667 * 668 * Clear text page 1 to black 669 * 670 *------------------------------- 671 textcls lda #$a0 ;space 672 673 cls40 ldy #$f7 674 :2 sta $400,y 675 sta $500,y 676 sta $600,y 677 sta $700,y 678 679 dey 680 cpy #$7f 681 bne :3 682 683 ldy #$77 684 :3 cpy #$ff 685 bne :2 686 687 rts 688 689 *------------------------------- 690 * S A V E / L O A D R E G S 691 *------------------------------- 692 saveregs sta regs 693 stx regs+1 694 sty regs+2 695 rts 696 697 loadregs lda regs 698 ldx regs+1 699 ldy regs+2 700 rts 701 702 *------------------------------- 703 * S A V E Z E R O 704 *------------------------------- 705 savezero 706 ldx #0 707 708 :loop lda $00,x 709 sta zerodump,x 710 711 inx 712 bne :loop 713 rts 714 715 *------------------------------- 716 * L O A D Z E R O 717 *------------------------------- 718 loadzero 719 ldx #0 720 721 :loop lda zerodump,x 722 sta $00,x 723 724 inx 725 bne :loop 726 rts 727 728 *------------------------------- 729 * C O P Y P A G E 730 * 731 * Copy desired auxmem page to "pagedump" in mainmem 732 * 733 * In: A = page # 734 *------------------------------- 735 copypage 736 tax 737 beq :pagezero 738 739 sta :loop+2 ;self-mod 740 741 sta $c003 ;read auxmem 742 743 ldx #0 744 745 :loop lda $300,x 746 sta pagedump,x 747 748 inx 749 bne :loop 750 751 sta $c002 ;read mainmem 752 753 rts 754 755 * Read original page 0 from pagedump, not the current page 0 756 757 :pagezero 758 ldx #0 759 :loop0 lda zerodump,x 760 sta pagedump,x 761 inx 762 bne :loop0 763 rts 764 765 *------------------------------- 766 * 40-column text base addresses 767 *------------------------------- 768 769 textl hex 00,80,00,80,00,80,00,80 770 hex 28,a8,28,a8,28,a8,28,a8 771 hex 50,d0,50,d0,50,d0,50,d0 772 773 texth hex 04,04,05,05,06,06,07,07 774 hex 04,04,05,05,06,06,07,07 775 hex 04,04,05,05,06,06,07,07 776 777 *------------------------------- 778 * Hex to ASCII 779 *------------------------------- 780 781 hextoasc asc "0123456789ABCDEF" 782 783 *------------------------------- 784 TITLESCREEN 785 jsr pretext 786 jsr textcls 787 788 jsr home 789 jsr normal 790 791 lda #title 792 ldx #>title 793 jsr prline 794 795 ldx #3 796 jsr setline 797 lda #date 798 ldx #>date 799 jsr prline 800 801 ldx #11 802 jsr setline 803 lda #please 804 ldx #>please 805 jsr prline 806 807 ldx #23 808 jsr setline 809 lda #copyr 810 ldx #>copyr 811 jsr prline 812 813 :loop lda $c061 814 ora $c062 815 bpl :loop 816 sta $c010 817 rts 818 819 *------------------------------- 820 * 821 * S T R I N G D A T A 822 * 823 *------------------------------- 824 STRpage asc "Page " 825 db #eol 826 827 title asc "PRINCE OF PERSIA Level Editor" 828 db #eol 829 date asc "Working Copy" 830 db #eol 831 please asc "PLEASE DO NOT COPY!!" 832 db #eol 833 copyr asc "Copyright 1989 Jordan Mechner" 834 db #eol 835 836 *------------------------------- 837 lst 838 eof ds 1 839 usr $a9,21,$e00,*-org 840 lst off