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corrected oam_clear to be off screen 

added nstc/pal detection.
This commit is contained in:
MonstersGoBoom 2023-03-23 08:22:19 -04:00
parent 6af03b34ad
commit 3165f65377
1 changed files with 19 additions and 1 deletions
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20
include/nes/neslib.c
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@ -94,6 +94,24 @@ int main(void)
ppu.scroll = 0x00;
ppu.oamaddr = 0x00;
// detech PAL or NTSC based on Blarg code.
ppu_wait_nmi();
__asm {
ldx #52
ldy #24
system_check_wait:
dex
bne system_check_wait
dey
bne system_check_wait
lda $2002
and #$80
sta NTSC_MODE
}
nes_game();
return 0;
@ -266,7 +284,7 @@ void oam_clear(void)
{
char i = 0;
do {
OAM_BUF[i] = 0;
OAM_BUF[i] = 255; // off screen not top corner.
i += 4;
} while (i);
}