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This commit is contained in:
Lior Halphon 2017-09-09 16:55:24 +03:00
parent 026baddbab
commit 02841ddde6
1 changed files with 2 additions and 2 deletions
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4
Core/display.c
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@ -294,10 +294,10 @@ static void update_display_state(GB_gameboy_t *gb, uint8_t cycles)
/* Todo: Is this correct for DMG mode CGB? */
uint8_t scx_delay = gb->effective_scx;
if (gb->cgb_double_speed) {
scx_delay = (scx_delay + 1) & ~1;
scx_delay = (scx_delay + 1) & ~1 & 7;
}
else {
scx_delay = (scx_delay + (gb->first_scanline ? 2 : 0)) & ~3;
scx_delay = (scx_delay + (gb->first_scanline ? 2 : 0)) & ~3 & 7;
}
/* Todo: These are correct for DMG, DMG-mode CGB, and single speed CGB. Is is correct for double speed CGB? */