forked from zladx/LADX-Disassembly
/
bank1.asm
9015 lines (8215 loc) · 147 KB
/
bank1.asm
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
; Code for bank 1.
; Contains main engine support code.
data_380 equ $0380
label_4000::
ld a, [wGameplaySubtype]
JP_TABLE
ld [de], a
ld b, b
ld b, d
ld b, b
ld [hl], e
ld b, b
ld a, a
ld b, b
sbc a, h
ld b, b
xor d
ld b, b
dec h
ld e, b
call IncrementGameplaySubtype
ldh a, [hIsGBC]
and a
jr z, label_4042
ld hl, $DC10
ld c, $80
di
ld a, $03
ld [rSVBK], a
ld a, [$D000]
and a
jr nz, label_403E
label_402A::
xor a
ld [rSVBK], a
ld b, [hl]
ld a, $03
ld [rSVBK], a
ld [hl], b
inc hl
dec c
ld a, c
and a
jr nz, label_402A
ld a, $01
ld [$D000], a
label_403E::
xor a
ld [rSVBK], a
ei
label_4042::
call DrawLinkSprite
call label_EFC
call label_1A22
ld a, [$C16B]
cp $04
jr nz, label_4072
ld a, $03
ldh [hWindowYUnused], a
ld a, $30
ldh [hWindowXUnused], a
call IncrementGameplaySubtype
xor a
ld [$C1BF], a
ld [wInventoryAppearing], a
ld [$C1B8], a
ld [$C1B9], a
ld [$C1B5], a
ld a, $0F
ld [$D6FE], a
label_4072::
ret
ld a, $0D
ld [$D6FE], a
xor a
ld [$C13F], a
jp IncrementGameplaySubtypeAndReturn
ld a, $0D
ld [$D6FF], a
ld a, $FF
ld [wWindowY], a
xor a
ldh [hBaseScrollX], a
ldh [$FF97], a
ld [$C16B], a
ld [$C16C], a
ld a, $01
ld [$DDD5], a
jp IncrementGameplaySubtypeAndReturn
call label_1A39
ld a, [$C16B]
cp $04
jr nz, label_40A9
call IncrementGameplaySubtype
label_40A9::
ret
call label_412A
ldh a, [$FFCC]
and $B0
jr z, LCDOn_return
ld a, $13
ldh [$FFF2], a
ld a, [$C13F]
cp $01
jr z, label_40F9
call IncrementGameplaySubtype
xor a
ld [$C16B], a
ld [$C16C], a
ld a, [$DBA5]
and a
jr z, label_40D5
xor a
ld [$C50A], a
ld [$C116], a
label_40D5::
ret
xor a
ld [wOBJ0Palette], a
ld [$DB99], a
ld [rOBP0], a
ld [rOBP1], a
ld [wBGPalette], a
ld [rBGP], a
ldh a, [$FF98]
ld [$DB9D], a
ldh a, [$FF99]
ld [$DB9E], a
call label_52A4
ld a, $80
ld [$DBC7], a
ret
label_40F9::
call label_27F2
call label_5DE6
call ClearWRAMAndLowerHRAM
xor a
ldh [$FFF5], a
ld a, $01
ld [$DBAF], a
call label_6162
; Enable LCD Screen
LCDOn::
; Configure LCD control register
; Bit 7: Enable LDC display
; Bit 6: Window tile map to $9C00-$9FFF
; Bit 5: Window display disabled
; Bit 4: Background & Window Tile Data to $8800-$97FF
; Bit 3: Background Tile Map to $9800-$9BFF
; Bit 2: Sprite size 8x16
; Bit 1: Sprite displayed enabled
; Bit 0: Background display enabled
ld a, %11000111
ld [rLCDC], a
ld [wLCDControl], a
; Set Window X position
ld a, $07
ld [rWX], a
; Set Windows Y position
ld a, $80
ld [wWindowY], a
ld [rWY], a
; Configure Window
ld a, $07
ldh [hWindowYUnused], a
ld a, $70
ldh [hWindowXUnused], a
LCDOn_return:
ret
label_4128::
ld c, b
ld e, b
label_412A::
ld hl, $C13F
call label_6BA8
ldh a, [$FFCC]
and $0C
jr z, label_413B
ld a, [hl]
inc a
and $01
ld [hl], a
label_413B::
ld e, [hl]
ld d, $00
ld hl, label_4128
add hl, de
ld a, [hl]
ld hl, $C018
ldi [hl], a
ld a, $24
ldi [hl], a
ld a, $BE
ldi [hl], a
ld [hl], $00
ret
ldh a, [$FFB7]
and a
jp nz, label_41BB
ld e, $70
label_4158::
xor a
ld [rBGP], a
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
dec e
jr nz, label_4158
ld e, $30
label_417E::
ld a, $40
ld [rBGP], a
dec e
jr nz, label_417E
ld e, $30
label_4187::
ld a, $80
ld [rBGP], a
dec e
jr nz, label_4187
ld e, $FF
label_4190::
ld a, $C0
ld [rBGP], a
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
dec e
jr nz, label_4190
ld e, $30
label_41AB::
ld a, $80
ld [rBGP], a
dec e
jr nz, label_41AB
ld e, $30
label_41B4::
ld a, $40
ld [rBGP], a
dec e
jr nz, label_41B4
label_41BB::
xor a
ld [wBGPalette], a
ld [rBGP], a
ret
db $f0, $9c, $c7, $03, $42, $91, $42, $9b
db $42, $ca, $42, $d9, $42
label_41CF::
db $6a, $6a, $6a, $6a, $6a, $6a, $6a, $6a
db $6a, $6a, $00, $00, $00, $0a, $04, $06
db $00, $0a, $04, $06, $00, $0a, $04, $06
label_41E7::
db $1c, $1c, $1c, $1c, $1c, $1c, $1c, $1c
db $1c, $1c
dec de
ld a, [de]
add hl, de
jr label_420D
ld d, $15
inc d
inc de
ld [de], a
db $11
db $10 ; Undefined instruction
db $10 ; Undefined instruction
db $10 ; Undefined instruction
db $10 ; Undefined instruction
db $10 ; Undefined instruction
db $10 ; Undefined instruction
db $10 ; Undefined instruction
db $af ; Undefined instruction
ld [wScreenShakeHorizontal], a
ld [wScreenShakeVertical], a
ldh a, [$FFB7]
and a
label_420D::
jr nz, label_4259
ld a, $10
ldh [$FFB7], a
ld a, $01
ldh [$FF9C], a
ld a, $0F
ld [$D6FE], a
ld a, $FF
ldh [hLinkAnimationState], a
ld a, [$DB57]
add a, $01
daa
ld [$DB57], a
ld a, [$DB58]
adc a, $00
daa
ld [$DB58], a
cp $10
jr c, label_4240
ld a, $99
ld [$DB57], a
ld a, $09
ld [$DB58], a
label_4240::
xor a
ld [$C1BF], a
ld [$D415], a
ld [$D47C], a
ld [$D47A], a
ld [$C3CB], a
ld [$C3CC], a
ld [$C3CD], a
ld [rOBP0], a
ret
label_4259::
rra
rra
rra
and $3F
ld e, a
ld d, $00
ld hl, label_41CF
add hl, de
ld a, [hl]
ldh [hLinkAnimationState], a
ldh a, [$FFB7]
rra
rra
rra
and $1F
ld e, a
ld hl, label_41E7
add hl, de
ld a, [hl]
ld [$C3CD], a
ld a, $01
ld [$C3CB], a
ld a, $1C
ld [wOBJ0Palette], a
ld a, [wBGPalette]
ld [$DB99], a
ld e, $08
call label_8D7
call label_90F
ret
ld a, $0D
ld [$D6FE], a
ld hl, $FF9C
inc [hl]
ret
ld a, $E4
ld [wBGPalette], a
ld a, $0A
ld [$D6FF], a
ld a, $FF
ld [wWindowY], a
xor a
ldh [hBaseScrollX], a
ldh [$FF97], a
ld hl, $FF9C
inc [hl]
call label_905
call label_2802
ret
nop
cp $FD
cp $00
ld [bc], a
inc bc
ld [bc], a
nop
inc b
ld [$100C], sp
inc c
ld [$F004], sp
or a
and a
jr nz, label_42D8
ld hl, $FF9C
inc [hl]
ld a, $03
ld [$D368], a
label_42D8::
ret
call label_4339
ldh a, [$FFCC]
and $B0
jr z, label_4335
ld a, [$C13F]
cp $01
jr z, label_432C
cp $00
jr z, label_42F2
ld [$DBD1], a
jr label_42F5
label_42F2::
call label_5DE6
label_42F5::
xor a
ld hl, wEntitiesTypeTable
ld e, $10
label_42FB::
ldi [hl], a
dec e
jr nz, label_42FB
ld [wOBJ0Palette], a
ld [$DB99], a
ld [rOBP0], a
ld [rOBP1], a
ld [wBGPalette], a
ld [rBGP], a
ld [$D6FB], a
ld [$D475], a
ldh a, [$FF98]
ld [$DB9D], a
ldh a, [$FF99]
ld [$DB9E], a
call label_52A4
ld a, $01
call label_8FA
ld a, $80
ld [$DBC7], a
ret
label_432C::
call label_5DE6
xor a
ldh [$FFF5], a
call label_6162
label_4335::
ret
label_4336::
ld d, b
ld h, b
ld [hl], b
label_4339::
ld hl, $C13F
call label_6BA8
ldh a, [$FFCC]
and $08
jr z, label_434D
ld a, [hl]
inc a
cp $03
jr nz, label_434C
xor a
label_434C::
ld [hl], a
label_434D::
ldh a, [$FFCC]
and $04
jr z, label_435C
ld a, [hl]
dec a
cp $FF
jr nz, label_435B
ld a, $02
label_435B::
ld [hl], a
label_435C::
ld e, [hl]
ld d, $00
ld hl, label_4336
add hl, de
ld a, [hl]
ld hl, $C018
ldi [hl], a
ld a, $24
ldi [hl], a
ld a, $BE
ldi [hl], a
ld [hl], $00
ret
OverworldHandlerEntryPoint::
ld a, [wGameplaySubtype]
JP_TABLE
._0 dw label_4395
._1 dw label_442B
._2 dw label_44B4
._3 dw label_44DB
._4 dw label_44F9
._5 dw label_4500
._6 dw label_4507
._7 dw label_F48
label_4385::
nop
nop
nop
nop
nop
nop
jr nc, label_438D
label_438D::
nop
nop
nop
nop
nop
nop
nop
nop
label_4395::
call label_27F2
call IncrementGameplaySubtype
ld a, [ROM_DebugTool2]
and a
jr z, label_43A7
ld a, $0B
ld [$D6FF], a
ret
label_43A7::
ld a, [$DBA5]
and a
jr z, label_4414
ldh a, [$FFF7]
cp $FF
jr nz, label_43B8
ld hl, $DDDA
jr label_43C5
label_43B8::
ld e, a
sla a
sla a
add a, e
ld e, a
ld d, $00
ld hl, $DB16
add hl, de
label_43C5::
ld de, $DBCC
ld c, $05
label_43CA::
ldh a, [$FFF7]
cp $FF
jr z, label_43DB
cp $08
jr z, label_43D8
cp $0A
jr c, label_43DB
label_43D8::
xor a
jr z, label_43DC
label_43DB::
ld a, [hli]
label_43DC::
ld [de], a
inc de
dec c
jr nz, label_43CA
ldh a, [$FFF7]
cp $FF
jr nz, label_43E9
ld a, $0F
label_43E9::
ld e, a
ld d, $00
ld hl, label_4385
add hl, de
ld a, [hl]
ld [$DBB0], a
ldh a, [$FFF7]
cp $FF
jr z, label_440B
cp $08
jr z, label_4425
cp $0A
jr nc, label_4425
cp $06
jr nz, label_440B
ldh a, [$FFF9]
and a
jr nz, label_4425
label_440B::
call label_5511
ld a, $07
ld [$D6FF], a
ret
label_4414::
ld a, $02
ld [$D6FF], a
call GetRandomByte
ld hl, hFrameCounter
or [hl]
and $03
ldh [$FFB9], a
ret
label_4425::
ld a, $09
ld [$D6FF], a
ret
label_442B::
call ClearLowerWRAM
xor a
ld [$C11C], a
call IncrementGameplaySubtype
ld a, [$DB9D]
ldh [$FF98], a
ld [$DBB1], a
ld a, [$DB9E]
ldh [$FF99], a
ld [$DBB2], a
ld a, [$DBC8]
ldh [$FFA2], a
and a
jr z, label_4452
ld a, $02
ld [$C146], a
label_4452::
ld a, $04
ld [$C125], a
call label_30F4
call label_37FE
call label_5FB3
ld a, $FF
ldh [$FFA6], a
ld a, [$DBA5]
and a
jr z, label_44A6
ld d, a
ldh a, [$FFF7]
cp $FF
jr nz, label_4475
ld d, $00
jr label_447E
label_4475::
cp $1A
jr nc, label_447E
cp $06
jr c, label_447E
inc d
label_447E::
ldh a, [$FFF6]
ld e, a
call label_29ED
cp $1A
jr z, label_4495
cp $19
jr z, label_4495
ld a, [$C18E]
and $E0
cp $80
jr nz, label_44A6
label_4495::
ld a, [$DBCD]
and a
jr z, label_44A6
ldh a, [$FFF8]
and $10
jr nz, label_44A6
ld a, $0C
ld [$D462], a
label_44A6::
ld a, [$DBA5]
and a
ld a, $06
jr nz, label_44B0
ld a, $07
label_44B0::
ld [$D6FE], a
ret
label_44B4::
ld a, $0F
ldh [$FF94], a
ldh a, [hIsGBC]
and a
jr z, label_44C9
di
ld a, $03
ld [rSVBK], a
xor a
ld [$D000], a
ld [rSVBK], a
ei
label_44C9::
call label_D1E
xor a
ldh [hNeedsUpdatingBGTiles], a
ldh [hNeedsUpdatingEnnemiesTiles], a
ld a, $09
ld [$D6FE], a
IncrementGameplaySubtype::
IncrementGameplaySubtypeAndReturn::
ld hl, wGameplaySubtype
inc [hl]
ret
label_44DB::
ld a, $01
ld [$D6FE], a
ld a, [$D6FA]
and a
jr z, label_44F5
ld a, $05
ld [$D6F8], a
ld a, [$C1CB]
and a
jr z, label_44F5
ld a, $03
ldh [$FFA5], a
label_44F5::
call IncrementGameplaySubtype
ret
label_44F9::
call label_3E3F
call IncrementGameplaySubtype
ret
label_4500::
call label_3E5A
call IncrementGameplaySubtype
ret
label_4507::
call label_5895
ld a, [$FF40]
or $20
ld [wLCDControl], a
ld [rLCDC], a
call IncrementGameplaySubtype
ld a, [$C11C]
ld [$D463], a
ld a, $04
ld [$C11C], a
xor a
ld [$C16B], a
ld [$C16C], a
ld a, [$C3CB]
and a
jr z, label_4548
ld a, [$C5AD]
ld [wBGPalette], a
ld a, $1C
ld [wOBJ0Palette], a
ld a, $E4
ld [$DB99], a
ldh a, [hIsGBC]
and a
jr nz, label_4548
ld a, $04
ld [$C16B], a
label_4548::
jp label_27DD
ldh a, [$FFCC]
and $90
jp z, TransitionReturn
TransitionToFileMenu::
ld [$D47B], a
label_4555::
call EnableExternalRAMWriting
ld a, [$A454]
ld [$DB80], a
call EnableExternalRAMWriting
ld a, [$A455]
ld [$DB81], a
call EnableExternalRAMWriting
ld a, [$A456]
ld [$DB82], a
call EnableExternalRAMWriting
ld a, [$A457]
ld [$DB83], a
call EnableExternalRAMWriting
ld a, [$A458]
ld [$DB84], a
call EnableExternalRAMWriting
ld a, [$A45F]
ld [$DC06], a
call EnableExternalRAMWriting
ld a, [$A460]
ld [$DC09], a
call EnableExternalRAMWriting
ld a, [$A45C]
ld [$DC00], a
call EnableExternalRAMWriting
ld a, [$A45D]
ld [$DC01], a
call EnableExternalRAMWriting
ld a, [$A801]
ld [$DB85], a
call EnableExternalRAMWriting
ld a, [$A802]
ld [$DB86], a
call EnableExternalRAMWriting
ld a, [$A803]
ld [$DB87], a
call EnableExternalRAMWriting
ld a, [$A804]
ld [$DB88], a
call EnableExternalRAMWriting
ld a, [$A805]
ld [$DB89], a
call EnableExternalRAMWriting
ld a, [$A80C]
ld [$DC07], a
call EnableExternalRAMWriting
ld a, [$A80D]
ld [$DC0A], a
call EnableExternalRAMWriting
ld a, [$A809]
ld [$DC02], a
call EnableExternalRAMWriting
ld a, [$A80A]
ld [$DC03], a
call EnableExternalRAMWriting
ld a, [$ABAE]
ld [$DB8A], a
call EnableExternalRAMWriting
ld a, [$ABAF]
ld [$DB8B], a
call EnableExternalRAMWriting
ld a, [$ABB0]
ld [$DB8C], a
call EnableExternalRAMWriting
ld a, [$ABB1]
ld [$DB8D], a
call EnableExternalRAMWriting
ld a, [$ABB2]
ld [$DB8E], a
call EnableExternalRAMWriting
ld a, [$ABB9]
ld [$DC08], a
call EnableExternalRAMWriting
ld a, [$ABBA]
ld [$DC0B], a
call EnableExternalRAMWriting
ld a, [$ABB6]
ld [$DC04], a
call EnableExternalRAMWriting
ld a, [$ABB7]
ld [$DC05], a
ld a, GAMEPLAY_FILE_SELECT
ld [wGameplayType], a
xor a
ld [wGameplaySubtype], a
xor a
ldh [$FF97], a
ldh [hBaseScrollX], a
ld a, $00
ld [wBGPalette], a
ld [wOBJ0Palette], a
ld [$DB99], a
ld a, $01
call label_8FA
TransitionReturn::
ret
label_4667::
db 4, 1, 2, 3, 5, 6, 7, 8, 9, $A, $B, $C, 1, 1, 1, 0
db 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2
db 1, 1, 1, 1, 3, 1, 1, 1, 1, 4, 1, 1, 1, 1, 5, 1
db 1, 1, 1, 6, 1, 1, 1, 1, 7, 1, 1, 1, 1, 8, 1, 1
db 1, 1, 9
; Initialize save files, and load debug save file if needed
InitSaveFiles::
; Initialize the battery-backed memory used for save files
ld de, $0000
call label_4794
ld de, $3AD
call label_4794
ld de, $75A
call label_4794
; If DebugTool1 is enabled,
; write a default save file with everything unlocked
ld a, [ROM_DebugTool1]
and a
jp z, .return
ld e, $00
ld d, $00
ld bc, $A405
.loop
ld hl, label_4667
add hl, de
ld a, [hli]
ld [bc], a
inc bc
inc e
ld a, e
cp $43
jr nz, .loop
ld a, $01
ld [$A453], a
ld a, $01
ld [$A449], a
ld a, $02