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-rw-r--r--src/engine/bank03.asm22
-rw-r--r--src/engine/bank1c.asm6
-rw-r--r--src/engine/bank20.asm394
-rw-r--r--src/engine/home.asm101
4 files changed, 269 insertions, 254 deletions
diff --git a/src/engine/bank03.asm b/src/engine/bank03.asm
index 87c9401..932de23 100644
--- a/src/engine/bank03.asm
+++ b/src/engine/bank03.asm
@@ -490,20 +490,21 @@ Func_c38f: ; c38f (3:438f)
push bc
ld a, [wd23a]
ld e, a
- ld a, [wd23b]
+ ld a, [wd23a + 1]
ld d, a
or e
- jr z, .asm_c3c7
+ jr z, .skip
+
push hl
- ld b, $c0
- call Func_08bf
+ ld b, HIGH(wc000)
+ call InitBGMapDecompression
ld a, [wd23d]
ld [wTempPointerBank], a
- ld a, [wd130]
+ ld a, [wBGMapHeight]
inc a
srl a
ld b, a
- ld a, [wd12f]
+ ld a, [wBGMapWidth]
inc a
srl a
ld c, a
@@ -511,7 +512,7 @@ Func_c38f: ; c38f (3:438f)
.asm_c3b7
push bc
ld b, $00
- call Func_3be4
+ call DecompressBGMapFromBank
ld hl, $10
add hl, de
ld d, h
@@ -519,7 +520,8 @@ Func_c38f: ; c38f (3:438f)
pop bc
dec b
jr nz, .asm_c3b7
-.asm_c3c7
+
+.skip
pop bc
pop hl
ret
@@ -571,10 +573,10 @@ Func_c3ee: ; c3ee (3:43ee)
ret
Func_c3ff: ; c3ff (3:43ff)
- ld a, [wd12f]
+ ld a, [wBGMapWidth]
sub $14
ld [wd237], a
- ld a, [wd130]
+ ld a, [wBGMapHeight]
sub $12
ld [wd238], a
call Func_c41c
diff --git a/src/engine/bank1c.asm b/src/engine/bank1c.asm
index b8ac4fb..10bd58d 100644
--- a/src/engine/bank1c.asm
+++ b/src/engine/bank1c.asm
@@ -260,11 +260,11 @@ Func_701e9: ; 701e9 (1c:41e9)
push bc
ld e, l
ld d, h
- ld b, $c0
- call Func_08bf
+ ld b, HIGH(wc000)
+ call InitBGMapDecompression
pop bc
pop de
- call Func_08de
+ call DecompressBGMap
ret
Func_701fe: ; 701fe (1c:41fe)
diff --git a/src/engine/bank20.asm b/src/engine/bank20.asm
index e11b4d5..c47f37b 100644
--- a/src/engine/bank20.asm
+++ b/src/engine/bank20.asm
@@ -15,11 +15,12 @@ Func_80028: ; 80028 (20:4028)
Func_80077: ; 80077 (20:4077)
ld a, $1
- ld [wd292], a
+ ld [wBGMapCopyMode], a
jr Func_80082
xor a
- ld [wd292], a
+ ld [wBGMapCopyMode], a
+; fallthrough
Func_80082: ; 80082 (20:4082)
push hl
@@ -30,24 +31,29 @@ Func_80082: ; 80082 (20:4082)
ld [hl], e
inc hl
ld [hl], d
+
+; get pointer and bank for BG Map
call Func_803b9
ld a, [wTempPointerBank]
ld [wd23d], a
- ld de, wLoadedPalData
- ld bc, $0006
+
+; store header data
+ ld de, wBGMapBuffer
+ ld bc, $0006 ; header + 1st instruction
call CopyBankedDataToDE
ld l, e
ld h, d
ld a, [hli]
- ld [wd12f], a
+ ld [wBGMapWidth], a
ld a, [hli]
- ld [wd130], a
+ ld [wBGMapHeight], a
ld a, [hli]
ld [wd23a], a
ld a, [hli]
- ld [wd23b], a
+ ld [wd23a + 1], a
ld a, [hli]
ld [wd23c], a
+
call Func_800bd
pop de
pop bc
@@ -65,7 +71,7 @@ Func_800bd: ; 800bd (20:40bd)
adc $00
ld d, a
ld b, HIGH(wc000)
- call Func_08bf
+ call InitBGMapDecompression
ld a, [wVRAMPointer]
ld e, a
ld a, [wVRAMPointer + 1]
@@ -77,9 +83,10 @@ Func_800bd: ; 800bd (20:40bd)
ret
Func_800e0: ; 800e0 (20:40e0)
+; if wd23c != 0, then use double wBGMapWidth
push hl
ld hl, wd28e
- ld a, [wd12f]
+ ld a, [wBGMapWidth]
ld [hl], a
ld a, [wd23c]
or a
@@ -88,14 +95,15 @@ Func_800e0: ; 800e0 (20:40e0)
.asm_800f0
ld c, $40
- ld hl, wLoadedPalData
+ ld hl, wBGMapBuffer
xor a
.loop_clear
ld [hli], a
dec c
jr nz, .loop_clear
- ld a, [wd130]
+; loop each row, up to the number of tiles in height
+ ld a, [wBGMapHeight]
ld c, a
.loop
push bc
@@ -103,36 +111,37 @@ Func_800e0: ; 800e0 (20:40e0)
ld b, $00
ld a, [wd28e]
ld c, a
- ld de, wLoadedPalData
- call Func_3be4
- ld a, [wd12f]
+ ld de, wBGMapBuffer
+ call DecompressBGMapFromBank
+
+ ld a, [wBGMapWidth]
ld b, a
pop de
push de
- ld hl, wLoadedPalData
- call Func_8016e
+ ld hl, wBGMapBuffer
+ call CopyBGDataToVRAMOrSRAM
ld a, [wConsole]
cp CONSOLE_CGB
- jr nz, .asm_8013b
+ jr nz, .next_row
; cgb only
call BankswitchVRAM1
- ld a, [wd12f]
+ ld a, [wBGMapWidth]
ld c, a
ld b, $00
- ld hl, wLoadedPalData
+ ld hl, wBGMapBuffer
add hl, bc
pop de
push de
- ld a, [wd12f]
+ ld a, [wBGMapWidth]
ld b, a
call Func_80148
- call Func_8016e
+ call CopyBGDataToVRAMOrSRAM
call BankswitchVRAM0
-.asm_8013b
+.next_row
pop de
- ld hl, $20
+ ld hl, BG_MAP_WIDTH
add hl, de
ld e, l
ld d, h
@@ -150,36 +159,47 @@ Func_80148: ; 80148 (20:4148)
ld a, [wd23c]
or a
jr z, .asm_80162
+
+; add wd291 to b bytes in hl
push hl
push bc
-.asm_80155
+.loop_1
push bc
ld a, [wd291]
add [hl]
ld [hli], a
pop bc
dec b
- jr nz, .asm_80155
+ jr nz, .loop_1
pop bc
pop hl
ret
+
+; store wd291 to b bytes in hl
.asm_80162
push hl
push bc
ld a, [wd291]
-.asm_80167
+.loop_2
ld [hli], a
dec b
- jr nz, .asm_80167
+ jr nz, .loop_2
pop bc
pop hl
ret
-Func_8016e: ; 8016e (20:416e)
- ld a, [wd292]
+; copies BG Map data pointed by hl
+; to either VRAM or SRAM, depending on wBGMapCopyMode
+; de is the target address in VRAM,
+; if SRAM is the target address to copy,
+; copies data to s0BGMap or s1BGMap
+; for VRAM0 or VRAM1 respectively
+CopyBGDataToVRAMOrSRAM: ; 8016e (20:416e)
+ ld a, [wBGMapCopyMode]
or a
jp z, SafeCopyDataHLtoDE
+; copies b bytes from hl to SRAM1
push hl
push bc
push de
@@ -188,12 +208,12 @@ Func_8016e: ; 8016e (20:416e)
ld a, BANK("SRAM1")
call BankswitchSRAM
push hl
- ld hl, $800
+ ld hl, s0BGMap - v0BGMap0
ldh a, [hBankVRAM]
or a
- jr z, .asm_8018c
- ld hl, $c00
-.asm_8018c
+ jr z, .got_pointer
+ ld hl, s1BGMap - v1BGMap0
+.got_pointer
add hl, de
ld e, l
ld d, h
@@ -412,6 +432,7 @@ Func_802bb: ; 802bb (20:42bb)
INCROM $802d4, $803b9
+; gets pointer to BG map with ID from wd131
Func_803b9: ; 803b9 (20:43b9)
ld l, $00
ld a, [wd131]
@@ -578,7 +599,7 @@ Func_80b89: ; 80b89 (20:4b89)
push af
ld c, a
ld a, $01
- ld [wd292], a
+ ld [wBGMapCopyMode], a
ld b, $00
ld hl, wd323
add hl, bc
@@ -596,7 +617,7 @@ Func_80b89: ; 80b89 (20:4b89)
Func_80ba4: ; 80ba4 (20:4ba4)
push af
xor a
- ld [wd292], a
+ ld [wBGMapCopyMode], a
pop af
; Fallthrough
@@ -609,13 +630,13 @@ Func_80baa: ; 80baa (20:4baa)
push af
ld a, [wd23d]
push af
- ld a, [wd12f]
+ ld a, [wBGMapWidth]
push af
- ld a, [wd130]
+ ld a, [wBGMapHeight]
push af
ld a, [wd23a]
push af
- ld a, [wd23b]
+ ld a, [wd23a + 1]
push af
ld b, $0
ld hl, wd323
@@ -658,13 +679,13 @@ Func_80baa: ; 80baa (20:4baa)
add hl, bc
farcall Func_c38f
pop af
- ld [wd23b], a
+ ld [wd23a + 1], a
pop af
ld [wd23a], a
pop af
- ld [wd130], a
+ ld [wBGMapHeight], a
pop af
- ld [wd12f], a
+ ld [wBGMapWidth], a
pop af
ld [wd23d], a
pop af
@@ -1415,373 +1436,332 @@ MapDataPointers_81697: ; 81697 (20:5697)
palette_pointer Palette160, 1, 0 ; PALETTE_160
Data_8191b:: ; 8191b (20:591b)
- db $14
- db $12
+ db $14 ; width
+ db $12 ; height
dw $0000
db $00
- db $dd
- INCROM $81921, $81a22
+ INCROM $81920, $81a22
Data_81a22:: ; 81a22 (20:5a22)
- db $14
- db $12
+ db $14 ; width
+ db $12 ; height
dw $0000
db $01
- db $dd
- INCROM $81a28, $81c13
+ INCROM $81a27, $81c13
Data_81c13:: ; 81c13 (20:5c13)
- db $1c
- db $1e
+ db $1c ; width
+ db $1e ; height
dw $5d11
db $00
- db $e7
- INCROM $81c19, $81d2e
+ INCROM $81c18, $81d2e
Data_81d2e:: ; 81d2e (20:5d2e)
- db $1c
- db $1e
+ db $1c ; width
+ db $1e ; height
dw $5eb4
db $01
- db $e7
- INCROM $81d34, $81ed1
+ INCROM $81d33, $81ed1
Data_81ed1:: ; 81ed1 (20:5ed1)
- db $04
- db $06
+ db $04 ; width
+ db $06 ; height
dw $5ef0
db $00
- db $ff
- INCROM $81ed7, $81ef5
+ INCROM $81ed6, $81ef5
Data_81ef5:: ; 81ef5 (20:5ef5)
- db $04
- db $06
+ db $04 ; width
+ db $06 ; height
dw $5f21
db $01
- db $fb
- INCROM $81efb, $81f26
+ INCROM $81efa, $81f26
Data_81f26:: ; 81f26 (20:5f26)
- db $18
- db $1e
+ db $18 ; width
+ db $1e ; height
dw $5fd3
db $00
- db $fd
- INCROM $81f2c, $81feb
+ INCROM $81f2b, $81feb
Data_81feb:: ; 81feb (20:5feb)
- db $18
- db $1e
+ db $18 ; width
+ db $1e ; height
dw $612b
db $01
- db $fd
- INCROM $81ff1, $82143
+ INCROM $81ff0, $82143
Data_82143:: ; 82143 (20:6143)
- db $04
- db $01
+ db $04 ; width
+ db $01 ; height
dw $614d
db $00
- db $f0
- INCROM $82149, $82150
+ INCROM $82148, $82150
Data_82150:: ; 82150 (20:6150)
- db $04
- db $01
+ db $04 ; width
+ db $01 ; height
dw $615d
db $01
- db $f8
- INCROM $82156, $82160
+ INCROM $82155, $82160
Data_82160:: ; 82160 (20:6160)
- db $14
- db $18
+ db $14 ; width
+ db $18 ; height
dw $620e
db $00
- db $ef
- INCROM $82166, $82222
+ INCROM $82165, $82222
Data_82222:: ; 82222 (20:6222)
- db $14
- db $18
+ db $14 ; width
+ db $18 ; height
dw $6322
db $01
- db $ee
- INCROM $82228, $82336
+ INCROM $82227, $82336
Data_82336:: ; 82336 (20:6336)
- db $14
- db $12
+ db $14 ; width
+ db $12 ; height
dw $63ec
db $00
- db $ef
- INCROM $8233c, $82400
+ INCROM $8233b, $82400
Data_82400:: ; 82400 (20:6400)
- db $14
- db $12
+ db $14 ; width
+ db $12 ; height
dw $6509
db $01
- db $ef
- INCROM $82406, $8251d
+ INCROM $82405, $8251d
Data_8251d:: ; 8251d (20:651d)
- db $14
- db $12
+ db $14 ; width
+ db $12 ; height
dw $65d3
db $00
- db $ef
- INCROM $82523, $825e7
+ INCROM $82522, $825e7
Data_825e7:: ; 825e7 (20:65e7)
- db $14
- db $12
+ db $14 ; width
+ db $12 ; height
dw $66f0
db $01
- db $ef
- INCROM $825ed, $82704
+ INCROM $825ec, $82704
Data_82704:: ; 82704 (20:6704)
- db $14
- db $12
+ db $14 ; width
+ db $12 ; height
dw $67ba
db $00
- db $ef
- INCROM $8270a, $827ce
+ INCROM $82709, $827ce
Data_827ce:: ; 827ce (20:67ce)
- db $14
- db $12
+ db $14 ; width
+ db $12 ; height
dw $68d7
db $01
- db $ef
- INCROM $827d4, $828eb
+ INCROM $827d3, $828eb
Data_828eb:: ; 828eb (20:68eb)
- db $14
- db $12
+ db $14 ; width
+ db $12 ; height
dw $69a1
db $00
- db $ef
- INCROM $828f1, $829b5
+ INCROM $828f0, $829b5
Data_829b5:: ; 829b5 (20:69b5)
- db $14
- db $12
+ db $14 ; width
+ db $12 ; height
dw $6abe
db $01
- db $ef
- INCROM $829bb, $82ad2
+ INCROM $829ba, $82ad2
Data_82ad2:: ; 82ad2 (20:6ad2)
- db $14
- db $12
+ db $14 ; width
+ db $12 ; height
dw $6b88
db $00
- db $ef
- INCROM $82ad8, $82b9c
+ INCROM $82ad7, $82b9c
Data_82b9c:: ; 82b9c (20:6b9c)
- db $14
- db $12
+ db $14 ; width
+ db $12 ; height
dw $6ca5
db $01
- db $ef
- INCROM $82ba2, $82cb9
+ INCROM $82ba1, $82cb9
Data_82cb9:: ; 82cb9 (20:6cb9)
- db $14
- db $12
+ db $14 ; width
+ db $12 ; height
dw $6d6f
db $00
- db $ef
- INCROM $82cbf, $82d83
+ INCROM $82cbe, $82d83
Data_82d83:: ; 82d83 (20:6d83)
- db $14
- db $12
+ db $14 ; width
+ db $12 ; height
dw $6e8c
db $01
- db $ef
- INCROM $82d89, $82ea0
+ INCROM $82d88, $82ea0
Data_82ea0:: ; 82ea0 (20:6ea0)
- db $14
- db $12
+ db $14 ; width
+ db $12 ; height
dw $6f56
db $00
- db $ef
- INCROM $82ea6, $82f6a
+ INCROM $82ea5, $82f6a
Data_82f6a:: ; 82f6a (20:6f6a)
- db $14
- db $12
+ db $14 ; width
+ db $12 ; height
dw $7073
db $01
- db $ef
- INCROM $82f70, $83087
+ INCROM $82f6f, $83087
Data_83087:: ; 83087 (20:7087)
- db $14
- db $12
+ db $14 ; width
+ db $12 ; height
dw $713d
db $00
- db $ef
- INCROM $8308d, $83151
+ INCROM $8308c, $83151
Data_83151:: ; 83151 (20:7151)
- db $14
- db $12
+ db $14 ; width
+ db $12 ; height
dw $725a
db $01
- db $ef
- INCROM $83157, $8326e
+ INCROM $83156, $8326e
Data_8326e:: ; 8326e (20:726e)
- db $14
- db $12
+ db $14 ; width
+ db $12 ; height
dw $730d
db $00
- db $ef
- INCROM $83274, $83321
+ INCROM $83273, $83321
Data_83321:: ; 83321 (20:7321)
- db $14
- db $12
+ db $14 ; width
+ db $12 ; height
dw $7410
db $01
- db $ef
- INCROM $83327, $83424
+ INCROM $83326, $83424
Data_83424:: ; 83424 (20:7424)
- db $1c
- db $1a
+ db $1c ; width
+ db $1a ; height
dw $7529
db $00
- db $e7
- INCROM $8342a, $83545
+ INCROM $83429, $83545
Data_83545:: ; 83545 (20:7545)
- db $1c
- db $1a
+ db $1c ; width
+ db $1a ; height
dw $76bf
db $01
- db $e7
- INCROM $8354b, $836db
+ INCROM $8354a, $836db
Data_836db:: ; 836db (20:76db)
- db $18
- db $12
+ db $18 ; width
+ db $12 ; height
dw $777b
db $00
- db $e7
- INCROM $836e1, $8378c
+ INCROM $836e0, $8378c
Data_8378c:: ; 8378c (20:778c)
- db $18
- db $12
+ db $18 ; width
+ db $12 ; height
dw $787c
db $01
- db $e7
- INCROM $83792, $8388d
+ INCROM $83791, $8388d
Data_8388d:: ; 8388d (20:788d)
- db $1c
- db $1e
+ db $1c ; width
+ db $1e ; height
dw $79b5
db $00
- db $e7
- INCROM $83893, $839d6
+ INCROM $83892, $839d6
Data_839d6:: ; 839d6 (20:79d6)
- db $1c
- db $1e
+ db $1c ; width
+ db $1e ; height
dw $7bd0
db $01
- db $e7
- INCROM $839dc, $83bf1
+ INCROM $839db, $83bf1
Data_83bf1:: ; 83bf1 (20:7bf1)
- db $04
- db $03
+ db $04 ; width
+ db $03 ; height
dw $7c00
db $00
- db $d8
- INCROM $83bf7, $83c03
+ INCROM $83bf6, $83c03
Data_83c03:: ; 83c03 (20:7c03)
- db $04
- db $03
+ db $04 ; width
+ db $03 ; height
dw $7c17
db $01
- db $d6
- INCROM $83c09, $83c1a
+ INCROM $83c08, $83c1a
Data_83c1a:: ; 83c1a (20:7c1a)
- db $04
- db $03
+ db $04 ; width
+ db $03 ; height
dw $7c23
db $00
- db $80
- INCROM $83c20, $83c26
+ INCROM $83c1f, $83c26
Data_83c26:: ; 83c26 (20:7c26)
- db $04
- db $03
+ db $04 ; width
+ db $03 ; height
dw $7c33
db $01
- db $a0
- INCROM $83c2c, $83c36
+ INCROM $83c2b, $83c36
Data_83c36:: ; 83c36 (20:7c36)
- db $03
- db $03
+ db $03 ; width
+ db $03 ; height
dw $0000
db $01
- db $f7
- INCROM $83c3c, $83c4c
+ INCROM $83c3b, $83c4c
AnimData1:: ; 83c4c (20:7c4c)
frame_table AnimFrameTable0
@@ -1792,4 +1772,6 @@ AnimData1:: ; 83c4c (20:7c4c)
Palette110:: ; 83c5b (20:7c5b)
db $00, $00
- INCROM $83c5d, $84000
+rept $3a3
+ db $ff
+endr
diff --git a/src/engine/home.asm b/src/engine/home.asm
index bb800df..47e48ff 100644
--- a/src/engine/home.asm
+++ b/src/engine/home.asm
@@ -1519,7 +1519,13 @@ UpdateRNGSources: ; 089b (0:089b)
pop hl
ret
-Func_08bf: ; 08bf (0:08bf)
+; initilizes variables used to decompress
+; BG Map data in DecompressBGMap
+; de points to the source of compressed data
+; b is used as the HIGH byte of the
+; WRAM address to write to ($100 bytes of buffer space)
+; also clears this $100 byte space
+InitBGMapDecompression: ; 08bf (0:08bf)
ld hl, wcad6
ld [hl], e
inc hl
@@ -1528,32 +1534,37 @@ Func_08bf: ; 08bf (0:08bf)
ld [hl], $1
inc hl
xor a
- ld [hli], a
- ld [hli], a
- ld [hli], a
- ld [hli], a
- ld [hl], b
+ ld [hli], a ; wcad9
+ ld [hli], a ; wcada
+ ld [hli], a ; wcadb
+ ld [hli], a ; wcadc
+ ld [hl], b ; wcadd
inc hl
- ld [hli], a ; 0
- ld [hl], $ef
+ ld [hli], a ; wcade
+ ld [hl], $ef ; wcadf
-; clear wc000
+; clear buffer
ld h, b
ld l, LOW(wc000)
xor a
-.asm_8d9
+.loop
ld [hl], a
inc l
- jr nz, .asm_8d9
+ jr nz, .loop
ret
-; loops bc times
-Func_08de: ; 08de (0:08de)
+; decompresses BG Map data
+; uses values initialized by InitBGMapDecompression
+; wcad6 holds the pointer for compressed source
+; input:
+; bc = map width
+; de = buffer to place decompressed data
+DecompressBGMap: ; 08de (0:08de)
push hl
push de
.loop
push bc
- call Func_08ef
+ call .Decompress
ld [de], a
inc de
pop bc
@@ -1565,36 +1576,48 @@ Func_08de: ; 08de (0:08de)
pop hl
ret
-Func_08ef: ; 08ef (0:08ef)
+; instructions start with a byte stored in wcad9
+; its bits are read from higher to lower bit
+; wcad8 stores the current bit being read
+; bit set:
+; - 1 byte read and copied literally
+; bit not set:
+; - 2 bytes read WW XY ZZ, byte in pos WW
+; copied (X + 1) times, then in pos ZZ
+; copied (Y + 1) times
+.Decompress: ; 08ef (0:08ef)
ld hl, wcadc
ld a, [hl]
or a
- jr z, .asm_902
+ jr z, .read_instruction
+
+; still repeating byte
dec [hl]
inc hl
-.asm_8f8
- ld b, [hl]
+.repeat_byte
+ ld b, [hl] ; wcadd
inc hl
- ld c, [hl]
+ ld c, [hl] ; wcade
inc [hl]
inc hl
ld a, [bc]
- ld c, [hl]
+ ld c, [hl] ; wcadf
inc [hl]
ld [bc], a
ret
-.asm_902
+
+.read_instruction
ld hl, wcad6
ld c, [hl]
inc hl
ld b, [hl]
- inc hl
+ inc hl ; wcad8
dec [hl]
- inc hl
+ inc hl ; wcad9
jr nz, .asm_914
- dec hl
- ld [hl], $8
- inc hl
+ dec hl ; wcad8
+ ld [hl], $8 ; number of bits
+ inc hl ; wcad9
ld a, [bc]
inc bc
ld [hl], a
@@ -1603,6 +1626,8 @@ Func_08ef: ; 08ef (0:08ef)
ld a, [bc]
inc bc
jr nc, .asm_92a
+
+; copy 1 byte literally
ld hl, wcad6
ld [hl], c
inc hl
@@ -1611,10 +1636,11 @@ Func_08ef: ; 08ef (0:08ef)
ld b, [hl]
inc hl
inc hl
- ld c, [hl]
+ ld c, [hl] ; wcadf
inc [hl]
ld [bc], a
ret
+
.asm_92a
ld [wcade], a
ld hl, wcada
@@ -1624,23 +1650,24 @@ Func_08ef: ; 08ef (0:08ef)
inc hl
ld a, [bc]
inc bc
- ld [hli], a
+ ld [hli], a ; wcadb
swap a
.asm_93c
and $f
- inc a
- ld [hli], a
+ inc a ; number of times to repeat
+ ld [hli], a ; wcadc
push hl
ld hl, wcad6
ld [hl], c
inc hl
ld [hl], b
pop hl
- jr .asm_8f8
+ jr .repeat_byte
+
.asm_94a
res 0, [hl]
inc hl
- ld a, [hli]
+ ld a, [hli] ; wcadb
jr .asm_93c
; set attributes for [hl] sprites starting from wOAM + [wOAMOffset] / 4
@@ -11206,13 +11233,17 @@ ResetDoFrameFunction: ; 3bdb (0:3bdb)
pop hl
ret
-; runs function bc times
-Func_3be4: ; 3be4 (0:3be4)
+; decompresses BG Map data from a given bank
+; uses values initialized by InitBGMapDecompression
+; input:
+; bc = map width
+; de = buffer to place decompressed data
+DecompressBGMapFromBank: ; 3be4 (0:3be4)
ldh a, [hBankROM]
push af
ld a, [wTempPointerBank]
call BankswitchROM
- call Func_08de
+ call DecompressBGMap
pop af
call BankswitchROM
ret
generated by cgit v1.2.3 (git 2.25.1) at 2025-08-03 18:55:43 +0000