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This commit is contained in:
Lior Halphon 2020-05-05 01:44:48 +03:00
parent f46f138e9f
commit a3f261184d
1 changed files with 31 additions and 34 deletions
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65
BootROMs/cgb_boot.asm
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@ -6,8 +6,7 @@ Start:
ld sp, $fffe ld sp, $fffe
; Clear memory VRAM ; Clear memory VRAM
ld hl, $8000 call ClearMemoryPage8000
call ClearMemoryPage
ld a, 2 ld a, 2
ld c, $70 ld c, $70
ld [c], a ld [c], a
@ -74,9 +73,7 @@ Start:
; Clear the second VRAM bank ; Clear the second VRAM bank
ld a, 1 ld a, 1
ldh [$4F], a ldh [$4F], a
xor a call ClearMemoryPage8000
ld hl, $8000
call ClearMemoryPage
call LoadTileset call LoadTileset
ld b, 3 ld b, 3
@ -177,8 +174,10 @@ ENDC
IF !DEF(FAST) IF !DEF(FAST)
call DoIntroAnimation call DoIntroAnimation
ld a, 45
ldh [WaitLoopCounter], a
; Wait ~0.75 seconds ; Wait ~0.75 seconds
ld b, 45 ld b, a
call WaitBFrames call WaitBFrames
; Play first sound ; Play first sound
@ -189,10 +188,6 @@ IF !DEF(FAST)
; Play second sound ; Play second sound
ld a, $c1 ld a, $c1
call PlaySound call PlaySound
; Wait ~0.5 seconds
ld a, 30
ldh [WaitLoopCounter], a
.waitLoop .waitLoop
call GetInputPaletteIndex call GetInputPaletteIndex
@ -602,8 +597,11 @@ PlaySound:
ldh [$14], a ldh [$14], a
ret ret
ClearMemoryPage8000:
ld hl, $8000
; Clear from HL to HL | 0x2000 ; Clear from HL to HL | 0x2000
ClearMemoryPage: ClearMemoryPage:
xor a
ldi [hl], a ldi [hl], a
bit 5, h bit 5, h
jr z, ClearMemoryPage jr z, ClearMemoryPage
@ -781,6 +779,7 @@ IF !DEF(FAST)
.fadeLoop .fadeLoop
ld c, 32 ; 32 colors to fade ld c, 32 ; 32 colors to fade
ld hl, BgPalettes ld hl, BgPalettes
push hl
.frameLoop .frameLoop
push bc push bc
@ -833,7 +832,7 @@ IF !DEF(FAST)
jr nz, .frameLoop jr nz, .frameLoop
call WaitFrame call WaitFrame
ld hl, BgPalettes pop hl
call LoadBGPalettes64 call LoadBGPalettes64
call WaitFrame call WaitFrame
dec b dec b
@ -888,6 +887,14 @@ ENDC
ldh [$4C], a ldh [$4C], a
ld a, $1 ld a, $1
ret ret
GetKeyComboPalette:
ld hl, KeyCombinationPalettes - 1 ; Return value is 1-based, 0 means nothing down
ld c ,a
ld b, 0
add hl, bc
ld a, [hl]
ret
EmulateDMG: EmulateDMG:
ld a, 1 ld a, 1
@ -900,11 +907,7 @@ EmulateDMG:
ldh a, [InputPalette] ldh a, [InputPalette]
and a and a
jr z, .nothingDown jr z, .nothingDown
ld hl, KeyCombinationPalettes - 1 ; Return value is 1-based, 0 means nothing down call GetKeyComboPalette
ld c ,a
ld b, 0
add hl, bc
ld a, [hl]
jr .paletteFromKeys jr .paletteFromKeys
.nothingDown .nothingDown
ld a, b ld a, b
@ -985,17 +988,21 @@ GetPaletteIndex:
.notNintendo .notNintendo
xor a xor a
ret ret
LoadPalettesFromIndex: ; a = index of combination GetPaletteCombo:
ld b, a ld b, a
; Multiply by 3 ; Multiply by 3
add b add b
add b add b
ld hl, PaletteCombinations ld hl, PaletteCombinations
ld b, 0 ld b, 0
ld c, a ld c, a
add hl, bc add hl, bc
ret
LoadPalettesFromIndex: ; a = index of combination
call GetPaletteCombo
; Obj Palettes ; Obj Palettes
ld e, 0 ld e, 0
@ -1100,20 +1107,10 @@ ChangeAnimationPalette:
push hl push hl
push bc push bc
push de push de
ld hl, KeyCombinationPalettes - 1 ; Input palettes are 1-based, 0 means nothing down call GetKeyComboPalette
ld c, a call GetPaletteCombo
ld b, 0 inc l
add hl, bc inc l
ld a, [hl]
ld b, a
; Multiply by 3
add b
add b
ld hl, PaletteCombinations + 2; Background Palette
ld b, 0
ld c, a
add hl, bc
ld a, [hl] ld a, [hl]
ld hl, Palettes + 1 ld hl, Palettes + 1
ld b, 0 ld b, 0
@ -1164,7 +1161,7 @@ ChangeAnimationPalette:
ld hl, BgPalettes ld hl, BgPalettes
call LoadBGPalettes64 call LoadBGPalettes64
; Delay the wait loop while the user is selecting a palette ; Delay the wait loop while the user is selecting a palette
ld a, 30 ld a, 45
ldh [WaitLoopCounter], a ldh [WaitLoopCounter], a
pop de pop de
pop bc pop bc