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LYC bit on CGB-C

This commit is contained in:
Lior Halphon 2018-07-03 21:56:32 +03:00
parent a7aabca618
commit 18ae18a95c
1 changed files with 6 additions and 4 deletions
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10
Core/display.c
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@ -236,7 +236,8 @@ void GB_STAT_update(GB_gameboy_t *gb)
bool previous_interrupt_line = gb->stat_interrupt_line;
/* Set LY=LYC bit */
if (gb->ly_for_comparison != (uint16_t)-1 || !GB_is_cgb(gb)) {
/* TODO: This behavior might not be correct for CGB revisions other than C and E */
if (gb->ly_for_comparison != (uint16_t)-1 || gb->model <= GB_MODEL_CGB_C) {
if (gb->ly_for_comparison == gb->io_registers[GB_IO_LYC]) {
gb->lyc_interrupt_line = true;
gb->io_registers[GB_IO_STAT] |= 4;
@ -748,6 +749,7 @@ void GB_display_run(GB_gameboy_t *gb, uint8_t cycles)
if (object->flags & 0x40) { /* Flip Y */
tile_y ^= height_16? 0xF : 7;
}
/* Todo: I'm not 100% sure an access to OAM can't trigger the OAM bug while we're accessing this */
uint16_t line_address = (height_16? object->tile & 0xFE : object->tile) * 0x10 + tile_y * 2;
@ -864,17 +866,17 @@ void GB_display_run(GB_gameboy_t *gb, uint8_t cycles)
gb->io_registers[GB_IO_LY] = 153;
gb->ly_for_comparison = -1;
GB_STAT_update(gb);
GB_SLEEP(gb, display, 14, GB_is_cgb(gb)? 4: 6);
GB_SLEEP(gb, display, 14, (gb->model > GB_MODEL_CGB_C)? 4: 6);
if (!GB_is_cgb(gb)) {
gb->io_registers[GB_IO_LY] = 0;
}
gb->ly_for_comparison = 153;
GB_STAT_update(gb);
GB_SLEEP(gb, display, 15, GB_is_cgb(gb)? 4: 2);
GB_SLEEP(gb, display, 15, (gb->model > GB_MODEL_CGB_C)? 4: 2);
gb->io_registers[GB_IO_LY] = 0;
gb->ly_for_comparison = GB_is_cgb(gb)? 153 : -1;
gb->ly_for_comparison = (gb->model > GB_MODEL_CGB_C)? 153 : -1;
GB_STAT_update(gb);
GB_SLEEP(gb, display, 16, 4);