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-rwxr-xr-xmisc/gfx_41.asm224
1 files changed, 131 insertions, 93 deletions
diff --git a/misc/gfx_41.asm b/misc/gfx_41.asm
index dc5110e2e..e3a1a0375 100755
--- a/misc/gfx_41.asm
+++ b/misc/gfx_41.asm
@@ -1,52 +1,52 @@
-Function104000:: ; 104000
+HDMATransferAttrMapAndTileMapToWRAMBank3:: ; 104000
ld hl, .Function
jp CallInSafeGFXMode
.Function:
decoord 0, 0, AttrMap
- ld hl, wBackupAttrMap
+ ld hl, wScratchAttrMap
call CutAndPasteAttrMap
decoord 0, 0
- ld hl, wDecompressScratch
+ ld hl, wScratchTileMap
call CutAndPasteTilemap
ld a, $0
ld [rVBK], a
- ld hl, wDecompressScratch
- call Function10419d
+ ld hl, wScratchTileMap
+ call HDMATransferToWRAMBank3
ld a, $1
ld [rVBK], a
- ld hl, wBackupAttrMap
- call Function10419d
+ ld hl, wScratchAttrMap
+ call HDMATransferToWRAMBank3
ret
; 10402d
-Function10402d:: ; 10402d
+HDMATransferTileMapToWRAMBank3:: ; 10402d
ld hl, .Function
jp CallInSafeGFXMode
.Function:
decoord 0, 0
- ld hl, wDecompressScratch
+ ld hl, wScratchTileMap
call CutAndPasteTilemap
ld a, $0
ld [rVBK], a
- ld hl, wDecompressScratch
- call Function10419d
+ ld hl, wScratchTileMap
+ call HDMATransferToWRAMBank3
ret
; 104047
-Function104047: ; 104047
+HDMATransferAttrMapToWRAMBank3: ; 104047
ld hl, .Function
jp CallInSafeGFXMode
.Function:
decoord 0, 0, AttrMap
- ld hl, wBackupAttrMap
+ ld hl, wScratchAttrMap
call CutAndPasteAttrMap
ld a, $1
ld [rVBK], a
- ld hl, wBackupAttrMap
- call Function10419d
+ ld hl, wScratchAttrMap
+ call HDMATransferToWRAMBank3
ret
; 104061
@@ -56,63 +56,67 @@ ReloadMapPart:: ; 104061
.Function:
decoord 0, 0, AttrMap
- ld hl, wBackupAttrMap
+ ld hl, wScratchAttrMap
call CutAndPasteAttrMap
decoord 0, 0
- ld hl, wDecompressScratch
+ ld hl, wScratchTileMap
call CutAndPasteTilemap
call DelayFrame
+
di
ld a, [rVBK]
push af
ld a, $1
ld [rVBK], a
- ld hl, wBackupAttrMap
- call Function1041ad
+ ld hl, wScratchAttrMap
+ call HDMATransfer_Wait127Scanlines_toBGMap
ld a, $0
ld [rVBK], a
- ld hl, wDecompressScratch
- call Function1041ad
+ ld hl, wScratchTileMap
+ call HDMATransfer_Wait127Scanlines_toBGMap
pop af
ld [rVBK], a
ei
+
ret
-Function104099: ; 104099
+Mobile_ReloadMapPart: ; 104099
ld hl, ReloadMapPart ; useless
ld hl, .Function
jp CallInSafeGFXMode
.Function:
decoord 0, 0, AttrMap
- ld hl, wBackupAttrMap
+ ld hl, wScratchAttrMap
call CutAndPasteAttrMap
decoord 0, 0
- ld hl, wDecompressScratch
+ ld hl, wScratchTileMap
call CutAndPasteTilemap
call DelayFrame
+
di
ld a, [rVBK]
push af
ld a, $1
ld [rVBK], a
- ld hl, wBackupAttrMap
- call Function1041c1
+ ld hl, wScratchAttrMap
+ call HDMATransfer_NoDI
ld a, $0
ld [rVBK], a
- ld hl, wDecompressScratch
- call Function1041c1
+ ld hl, wScratchTileMap
+ call HDMATransfer_NoDI
pop af
ld [rVBK], a
ei
+
ret
; 1040d4
-Function1040d4: ; 1040d4
- ld hl, .Function
+; XXX
+ ld hl, .unreferenced_1040da
jp CallInSafeGFXMode
-.Function:
+.unreferenced_1040da
ld a, $1
ld [rVBK], a
ld a, $3
@@ -132,31 +136,34 @@ Function1040d4: ; 1040d4
ret
; 1040fb
-Function1040fb: ; 1040fb
- ld hl, .Function
+; XXX
+ ld hl, .unreferenced_104101
jp CallInSafeGFXMode
-.Function:
+.unreferenced_104101
ld a, $1
ld [rVBK], a
ld a, $3
ld [rSVBK], a
ld hl, w3_d800
- call Function10419d
+ call HDMATransferToWRAMBank3
ret
; 104110
-Function104110:: ; 104110
+OpenAndCloseMenu_HDMATransferTileMapAndAttrMap:: ; 104110
; OpenText
ld hl, .Function
jp CallInSafeGFXMode
.Function:
+ ; Transfer AttrMap and Tilemap to BGMap
+ ; Fill vBGAttrs with $00
+ ; Fill vBGTiles with " "
decoord 0, 0, AttrMap
- ld hl, wBackupAttrMap
+ ld hl, wScratchAttrMap
call CutAndPasteAttrMap
decoord 0, 0
- ld hl, wDecompressScratch
+ ld hl, wScratchTileMap
call CutAndPasteTilemap
call DelayFrame
@@ -165,38 +172,42 @@ Function104110:: ; 104110
push af
ld a, $1
ld [rVBK], a
- ld hl, wBackupAttrMap
- call Function1041b7
+ ld hl, wScratchAttrMap
+ call HDMATransfer_Wait123Scanlines_toBGMap
ld a, $0
ld [rVBK], a
- ld hl, wDecompressScratch
- call Function1041b7
+ ld hl, wScratchTileMap
+ call HDMATransfer_Wait123Scanlines_toBGMap
pop af
ld [rVBK], a
ei
ret
; 104148
-Function104148: ; 104148 (41:4148)
+Mobile_OpenAndCloseMenu_HDMATransferTileMapAndAttrMap: ; 104148 (41:4148)
ld hl, .Function
jp CallInSafeGFXMode
.Function:
+ ; Transfer AttrMap and Tilemap to BGMap
+ ; Fill vBGAttrs with $00
+ ; Fill vBGTiles with $ff
decoord 0, 0, AttrMap
- ld hl, wBackupAttrMap
+ ld hl, wScratchAttrMap
call CutAndPasteAttrMap
ld c, $ff
decoord 0, 0
- ld hl, wDecompressScratch
+ ld hl, wScratchTileMap
call CutAndPasteMap
+
ld a, $1
ld [rVBK], a
- ld hl, wBackupAttrMap
- call Function1041ad
+ ld hl, wScratchAttrMap
+ call HDMATransfer_Wait127Scanlines_toBGMap
ld a, $0
ld [rVBK], a
- ld hl, wDecompressScratch
- call Function1041ad
+ ld hl, wScratchTileMap
+ call HDMATransfer_Wait127Scanlines_toBGMap
ret
; 104177
@@ -233,8 +244,8 @@ CallInSafeGFXMode: ; 104177
; 10419d
-Function10419d: ; 10419d (41:419d)
- call Function10424e
+HDMATransferToWRAMBank3: ; 10419d (41:419d)
+ call _LoadHDMAParameters
ld a, $23
ld [hDMATransfer], a
@@ -246,60 +257,76 @@ WaitDMATransfer: ; 104a14
jr nz, .loop
ret
-Function1041ad: ; 1041ad (41:41ad)
+HDMATransfer_Wait127Scanlines_toBGMap: ; 1041ad (41:41ad)
+; HDMA transfer from hl to [hBGMapAddress]
+; hBGMapAddress -> de
+; 2 * SCREEN_HEIGHT -> c
ld a, [hBGMapAddress + 1]
ld d, a
ld a, [hBGMapAddress]
ld e, a
- ld c, $24
- jr Function104209
+ ld c, 2 * SCREEN_HEIGHT
+ jr HDMATransfer_Wait127Scanlines
-Function1041b7: ; 1041b7 (41:41b7)
+HDMATransfer_Wait123Scanlines_toBGMap: ; 1041b7 (41:41b7)
+; HDMA transfer from hl to [hBGMapAddress]
; hBGMapAddress -> de
-; $24 -> c
+; 2 * SCREEN_HEIGHT -> c
; $7b --> b
ld a, [hBGMapAddress + 1]
ld d, a
ld a, [hBGMapAddress]
ld e, a
- ld c, $24
- jr asm_104205
+ ld c, 2 * SCREEN_HEIGHT
+ jr HDMATransfer_Wait123Scanlines
; 1041c1 (41:41c1)
-Function1041c1: ; 1041c1
+HDMATransfer_NoDI: ; 1041c1
+; HDMA transfer from hl to [hBGMapAddress]
+; [hBGMapAddress] --> de
+; 2 * SCREEN_HEIGHT --> c
ld a, [hBGMapAddress + 1]
ld d, a
ld a, [hBGMapAddress]
ld e, a
- ld c, $24
+ ld c, 2 * SCREEN_HEIGHT
+
+ ; [rHDMA1, rHDMA2] = hl & $fff0
ld a, h
ld [rHDMA1], a
ld a, l
and $f0
ld [rHDMA2], a
+ ; [rHDMA3, rHDMA4] = de & $1ff0
ld a, d
and $1f
ld [rHDMA3], a
ld a, e
and $f0
ld [rHDMA4], a
+ ; b = c | %10000000
ld a, c
dec c
or $80
ld b, a
+ ; d = $7f - c + 1
ld a, $7f
sub c
ld d, a
+ ; while [rLY] >= d: pass
.loop1
ld a, [rLY]
cp d
jr nc, .loop1
+ ; while not [rSTAT] & 3: pass
.loop2
ld a, [rSTAT]
and $3
jr z, .loop2
+ ; load the 5th byte of HDMA
ld a, b
ld [rHDMA5], a
+ ; wait until rLY advances (c + 1) times
ld a, [rLY]
inc c
ld hl, rLY
@@ -314,49 +341,58 @@ Function1041c1: ; 1041c1
ret
; 104205
-asm_104205:
+HDMATransfer_Wait123Scanlines:
ld b, $7b
- jr asm_10420b
+ jr _continue_HDMATransfer
-Function104209:
-; LY magic
+HDMATransfer_Wait127Scanlines:
ld b, $7f
-asm_10420b:
+_continue_HDMATransfer:
+; a lot of waiting around for hardware registers
+ ; [rHDMA1, rHDMA2] = hl & $fff0
ld a, h
ld [rHDMA1], a
ld a, l
and $f0 ; high nybble
ld [rHDMA2], a
+ ; [rHDMA3, rHDMA4] = de & $1ff0
ld a, d
and $1f ; lower 5 bits
ld [rHDMA3], a
ld a, e
and $f0 ; high nybble
ld [rHDMA4], a
+ ; e = c | %10000000
ld a, c
dec c
- or $80 ; set 7, a
+ or $80
ld e, a
+ ; d = b - c + 1
ld a, b
sub c
ld d, a
+ ; while [rLY] >= d: pass
.ly_loop
ld a, [rLY]
cp d
jr nc, .ly_loop
di
+ ; while [rSTAT] & 3: pass
.rstat_loop_1
ld a, [rSTAT]
and $3
jr nz, .rstat_loop_1
+ ; while not [rSTAT] & 3: pass
.rstat_loop_2
ld a, [rSTAT]
and $3
jr z, .rstat_loop_2
+ ; load the 5th byte of HDMA
ld a, e
ld [rHDMA5], a
+ ; wait until rLY advances (c + 1) times
ld a, [rLY]
inc c
ld hl, rLY
@@ -374,7 +410,7 @@ asm_10420b:
; 10424e
-Function10424e: ; 10424e (41:424e)
+_LoadHDMAParameters: ; 10424e (41:424e)
ld a, h
ld [rHDMA1], a
ld a, l
@@ -415,7 +451,7 @@ CutAndPasteMap: ; 104265 (41:4265)
; load the original value of c into hl 12 times
ld a, [hMapObjectIndexBuffer]
- ld b, 12
+ ld b, BG_MAP_WIDTH - SCREEN_WIDTH
.loop3
ld [hli], a
dec b
@@ -441,18 +477,20 @@ _Get2bpp:: ; 104284
push bc
push hl
- ; Copy c tiles of the 2bpp from b:de to wDecompressScratch
+ ; Copy c tiles of the 2bpp from b:de to wScratchTileMap
ld a, b ; bank
ld l, c ; number of tiles
ld h, $0
-rept 4
- add hl, hl ; multiply by 16 (16 bytes of a 2bpp = 8 x 8 tile)
-endr
+ ; multiply by 16 (16 bytes of a 2bpp = 8 x 8 tile)
+ add hl, hl
+ add hl, hl
+ add hl, hl
+ add hl, hl
ld b, h
ld c, l
ld h, d ; address
ld l, e
- ld de, wDecompressScratch
+ ld de, wScratchTileMap
call FarCopyBytes
pop hl
@@ -464,8 +502,8 @@ endr
ld d, h
ld e, l
- ld hl, wDecompressScratch
- call Function104209
+ ld hl, wScratchTileMap
+ call HDMATransfer_Wait127Scanlines
; restore the previous bank
pop af
@@ -512,14 +550,14 @@ _Get1bpp:: ; 1042b2
ld a, b
ld l, c
ld h, $0
-rept 3
add hl, hl ; multiply by 8
-endr
+ add hl, hl ; multiply by 8
+ add hl, hl ; multiply by 8
ld c, l
ld b, h
ld h, d
ld l, e
- ld de, wDecompressScratch
+ ld de, wScratchTileMap
call FarCopyBytesDouble_DoubleBankSwitch
pop hl
@@ -531,41 +569,41 @@ endr
ld d, h
ld e, l
- ld hl, wDecompressScratch
- call Function104209
+ ld hl, wScratchTileMap
+ call HDMATransfer_Wait127Scanlines
pop af
ld [rSVBK], a
ret
; 104303
-Function104303: ; 104303
- ld hl, Function104309
+HDMATransfer_OnlyTopFourRows: ; 104303
+ ld hl, .Function
jp CallInSafeGFXMode
; 104309
-Function104309:
- ld hl, wDecompressScratch
+.Function:
+ ld hl, wScratchTileMap
decoord 0, 0
- call Function10433a
- ld hl, wDecompressScratch + $80
+ call .Copy
+ ld hl, wScratchTileMap + $80
decoord 0, 0, AttrMap
- call Function10433a
+ call .Copy
ld a, $1
ld [rVBK], a
ld c, $8
- ld hl, wDecompressScratch + $80
+ ld hl, wScratchTileMap + $80
debgcoord 0, 0, VBGMap1
- call Function104209
+ call HDMATransfer_Wait127Scanlines
ld a, $0
ld [rVBK], a
ld c, $8
- ld hl, wDecompressScratch
+ ld hl, wScratchTileMap
debgcoord 0, 0, VBGMap1
- call Function104209
+ call HDMATransfer_Wait127Scanlines
ret
-Function10433a: ; 10433a (41:433a)
+.Copy: ; 10433a (41:433a)
ld b, 4
.outer_loop
ld c, SCREEN_WIDTH
@@ -576,7 +614,7 @@ Function10433a: ; 10433a (41:433a)
dec c
jr nz, .inner_loop
ld a, l
- add $20 - SCREEN_WIDTH
+ add BG_MAP_WIDTH - SCREEN_WIDTH
ld l, a
ld a, h
adc $0
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