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Surprise! The CGB has a 16-bit VRAM data bus

This commit is contained in:
Lior Halphon 2018-04-05 16:15:51 +03:00
parent 9aadc80f75
commit cc95c89d3c
1 changed files with 2 additions and 1 deletions
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3
Core/display.c
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@ -658,7 +658,8 @@ void GB_display_run(GB_gameboy_t *gb, uint8_t cycles)
}
gb->current_tile = gb->vram[map + gb->fetcher_x + y / 8 * 32];
if (gb->is_cgb) {
/* TODO: The timing is wrong (two reads a the same time)*/
/* The CGB actually accesses both the tile index AND the attributes in the same T-cycle.
This probably means the CGB has a 16-bit data bus for the VRAM. */
gb->current_tile_attributes = gb->vram[map + gb->fetcher_x + y / 8 * 32 + 0x2000];
}
gb->fetcher_x++;