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|
ClearBGPalettes:: ; 31f3
call ClearPalettes
WaitBGMap:: ; 31f6
; Tell VBlank to update BG Map
ld a, 1 ; BG Map 0 tiles
ld [hBGMapMode], a
; Wait for it to do its magic
ld c, 4
call DelayFrames
ret
; 3200
WaitBGMap2:: ; 0x3200
ld a, [hCGB]
and a
jr z, .bg0
ld a, 2
ld [hBGMapMode], a
ld c, 4
call DelayFrames
.bg0
ld a, 1
ld [hBGMapMode], a
ld c, 4
call DelayFrames
ret
; 0x3218
IsCGB:: ; 3218
ld a, [hCGB]
and a
ret
; 321c
ApplyTilemap:: ; 321c
ld a, [hCGB]
and a
jr z, .dmg
ld a, [wSpriteUpdatesEnabled]
cp 0
jr z, .dmg
ld a, 1
ld [hBGMapMode], a
jr CopyTilemapAtOnce
.dmg
; WaitBGMap
ld a, 1
ld [hBGMapMode], a
ld c, 4
call DelayFrames
ret
; 3238
CGBOnly_CopyTilemapAtOnce:: ; 3238
ld a, [hCGB]
and a
jr z, WaitBGMap
CopyTilemapAtOnce:: ; 323d
jr .CopyTilemapAtOnce
; 323f
; unused
farcall HDMATransferAttrMapAndTileMapToWRAMBank3
ret
; 3246
.CopyTilemapAtOnce: ; 3246
ld a, [hBGMapMode]
push af
xor a
ld [hBGMapMode], a
ld a, [hMapAnims]
push af
xor a
ld [hMapAnims], a
.wait
ld a, [rLY]
cp $7f
jr c, .wait
di
ld a, BANK(vTiles3)
ld [rVBK], a
hlcoord 0, 0, wAttrMap
call .StackPointerMagic
ld a, BANK(vTiles0)
ld [rVBK], a
hlcoord 0, 0
call .StackPointerMagic
.wait2
ld a, [rLY]
cp $7f
jr c, .wait2
ei
pop af
ld [hMapAnims], a
pop af
ld [hBGMapMode], a
ret
; 327b
.StackPointerMagic: ; 327b
; Copy all tiles to vBGMap
ld [hSPBuffer], sp
ld sp, hl
ld a, [hBGMapAddress + 1]
ld h, a
ld l, 0
ld a, SCREEN_HEIGHT
ld [hTilesPerCycle], a
ld b, 1 << 1 ; not in v/hblank
ld c, LOW(rSTAT)
.loop
rept SCREEN_WIDTH / 2
pop de
; if in v/hblank, wait until not in v/hblank
.loop\@
ld a, [$ff00+c]
and b
jr nz, .loop\@
; load BGMap0
ld [hl], e
inc l
ld [hl], d
inc l
endr
ld de, BG_MAP_WIDTH - SCREEN_WIDTH
add hl, de
ld a, [hTilesPerCycle]
dec a
ld [hTilesPerCycle], a
jr nz, .loop
ld a, [hSPBuffer]
ld l, a
ld a, [hSPBuffer + 1]
ld h, a
ld sp, hl
ret
; 32f9
SetPalettes:: ; 32f9
; Inits the Palettes
; depending on the system the monochromes palettes or color palettes
ld a, [hCGB]
and a
jr nz, .SetPalettesForGameBoyColor
ld a, %11100100
ld [rBGP], a
ld a, %11010000
ld [rOBP0], a
ld [rOBP1], a
ret
.SetPalettesForGameBoyColor:
push de
ld a, %11100100
call DmgToCgbBGPals
lb de, %11100100, %11100100
call DmgToCgbObjPals
pop de
ret
; 3317
ClearPalettes:: ; 3317
; Make all palettes white
; CGB: make all the palette colors white
ld a, [hCGB]
and a
jr nz, .cgb
; DMG: just change palettes to 0 (white)
xor a
ld [rBGP], a
ld [rOBP0], a
ld [rOBP1], a
ret
.cgb
ld a, [rSVBK]
push af
ld a, BANK(wBGPals2)
ld [rSVBK], a
; Fill wBGPals2 and wOBPals2 with $ffff (white)
ld hl, wBGPals2
ld bc, 16 palettes
ld a, $ff
call ByteFill
pop af
ld [rSVBK], a
; Request palette update
ld a, 1
ld [hCGBPalUpdate], a
ret
; 333e
GetMemSGBLayout:: ; 333e
ld b, SCGB_RAM
GetSGBLayout:: ; 3340
; load sgb packets unless dmg
ld a, [hCGB]
and a
jr nz, .sgb
ld a, [hSGB]
and a
ret z
.sgb
predef_jump LoadSGBLayout
; 334e
|
