mirror of
https://gitlab.com/xCrystal/pokecrystal-board.git
synced 2024-11-16 11:27:33 -08:00
223 lines
2.4 KiB
NASM
223 lines
2.4 KiB
NASM
Reset:: ; 150
|
|
di
|
|
call SoundRestart
|
|
xor a
|
|
ld [hMapAnims], a
|
|
call ClearPalettes
|
|
xor a
|
|
ld [rIF], a
|
|
ld a, 1 ; VBlank int
|
|
ld [rIE], a
|
|
ei
|
|
|
|
ld hl, wcfbe
|
|
set 7, [hl]
|
|
|
|
ld c, 32
|
|
call DelayFrames
|
|
|
|
jr Init
|
|
; 16e
|
|
|
|
|
|
_Start:: ; 16e
|
|
cp $11
|
|
jr z, .asm_175
|
|
xor a
|
|
jr .asm_177
|
|
|
|
.asm_175
|
|
ld a, $1
|
|
|
|
.asm_177
|
|
ld [hCGB], a
|
|
ld a, $1
|
|
ld [$ffea], a
|
|
; 17d
|
|
|
|
|
|
Init:: ; 17d
|
|
|
|
di
|
|
|
|
xor a
|
|
ld [rIF], a
|
|
ld [rIE], a
|
|
ld [rRP], a
|
|
ld [rSCX], a
|
|
ld [rSCY], a
|
|
ld [rSB], a
|
|
ld [rSC], a
|
|
ld [rWX], a
|
|
ld [rWY], a
|
|
ld [rBGP], a
|
|
ld [rOBP0], a
|
|
ld [rOBP1], a
|
|
ld [rTMA], a
|
|
ld [rTAC], a
|
|
ld [$d000], a
|
|
|
|
ld a, %100 ; Start timer at 4096Hz
|
|
ld [rTAC], a
|
|
|
|
.wait
|
|
ld a, [rLY]
|
|
cp 145
|
|
jr nz, .wait
|
|
|
|
xor a
|
|
ld [rLCDC], a
|
|
|
|
; Clear WRAM bank 0
|
|
ld hl, $c000
|
|
ld bc, $d000 - $c000
|
|
.asm_1b1
|
|
ld [hl], 0
|
|
inc hl
|
|
dec bc
|
|
ld a, b
|
|
or c
|
|
jr nz, .asm_1b1
|
|
|
|
ld sp, Stack
|
|
|
|
; Clear HRAM
|
|
ld a, [hCGB]
|
|
push af
|
|
ld a, [$ffea]
|
|
push af
|
|
xor a
|
|
ld hl, $ff80
|
|
ld bc, $ffff - $ff80
|
|
call ByteFill
|
|
pop af
|
|
ld [$ffea], a
|
|
pop af
|
|
ld [hCGB], a
|
|
|
|
call ClearWRAM
|
|
ld a, 1
|
|
ld [rSVBK], a
|
|
call ClearVRAM
|
|
call ClearSprites
|
|
call Function270
|
|
|
|
|
|
ld a, BANK(LoadPushOAM)
|
|
rst Bankswitch
|
|
|
|
call LoadPushOAM
|
|
|
|
xor a
|
|
ld [hMapAnims], a
|
|
ld [hSCX], a
|
|
ld [hSCY], a
|
|
ld [rJOYP], a
|
|
|
|
ld a, $8 ; HBlank int enable
|
|
ld [rSTAT], a
|
|
|
|
ld a, $90
|
|
ld [hWY], a
|
|
ld [rWY], a
|
|
|
|
ld a, 7
|
|
ld [hWX], a
|
|
ld [rWX], a
|
|
|
|
ld a, %11100011
|
|
; LCD on
|
|
; Win tilemap 1
|
|
; Win on
|
|
; BG/Win tiledata 0
|
|
; BG Tilemap 0
|
|
; OBJ 8x8
|
|
; OBJ on
|
|
; BG on
|
|
ld [rLCDC], a
|
|
|
|
ld a, -1
|
|
ld [hLinkPlayerNumber], a
|
|
|
|
callba Function9890
|
|
|
|
ld a, VBGMap1 / $100
|
|
ld [hBGMapAddress + 1], a
|
|
xor a ; VBGMap1 % $100
|
|
ld [hBGMapAddress], a
|
|
|
|
callba StartClock
|
|
|
|
xor a
|
|
ld [MBC3LatchClock], a
|
|
ld [MBC3SRamEnable], a
|
|
|
|
ld a, [hCGB]
|
|
and a
|
|
jr z, .asm_22b
|
|
call NormalSpeed
|
|
.asm_22b
|
|
|
|
xor a
|
|
ld [rIF], a
|
|
ld a, %1111 ; VBlank, LCDStat, Timer, Serial interrupts
|
|
ld [rIE], a
|
|
ei
|
|
|
|
call DelayFrame
|
|
|
|
predef Function9853
|
|
|
|
call SoundRestart
|
|
xor a
|
|
ld [wMapMusic], a
|
|
jp GameInit
|
|
; 245
|
|
|
|
|
|
ClearVRAM:: ; 245
|
|
; Wipe VRAM banks 0 and 1
|
|
|
|
ld a, 1
|
|
ld [rVBK], a
|
|
call .clear
|
|
|
|
xor a
|
|
ld [rVBK], a
|
|
.clear
|
|
ld hl, VTiles0
|
|
ld bc, $2000
|
|
xor a
|
|
call ByteFill
|
|
ret
|
|
; 25a
|
|
|
|
ClearWRAM:: ; 25a
|
|
; Wipe swappable WRAM banks (1-7)
|
|
|
|
ld a, 1
|
|
.asm_25c
|
|
push af
|
|
ld [rSVBK], a
|
|
xor a
|
|
ld hl, $d000
|
|
ld bc, $1000
|
|
call ByteFill
|
|
pop af
|
|
inc a
|
|
cp 8
|
|
jr nc, .asm_25c
|
|
ret
|
|
; 270
|
|
|
|
Function270:: ; 270
|
|
ld a, $0
|
|
call GetSRAMBank
|
|
ld hl, $a000
|
|
ld bc, $0020
|
|
xor a
|
|
call ByteFill
|
|
call CloseSRAM
|
|
ret
|
|
; 283
|