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T-cycle accurate timing of the extra OAM interrupt. Fixes vblank_stat_intr-GS, related to #54

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This commit is contained in:
Lior Halphon 2018-04-03 01:43:24 +03:00
parent ba07e7ba85
commit 5d63892949
1 changed files with 7 additions and 7 deletions
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14
Core/display.c
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@ -426,7 +426,7 @@ void GB_display_run(GB_gameboy_t *gb, uint8_t cycles)
GB_STATE(gb, display, 23);
GB_STATE(gb, display, 24);
GB_STATE(gb, display, 25);
GB_STATE(gb, display, 26);
}
if (!(gb->io_registers[GB_IO_LCDC] & 0x80)) {
@ -743,25 +743,25 @@ void GB_display_run(GB_gameboy_t *gb, uint8_t cycles)
if (!gb->is_cgb) {
gb->ly_for_comparison = -1;
}
GB_SLEEP(gb, display, 26, 2);
if (gb->current_line == LINES) {
gb->oam_interrupt_line = gb->io_registers[GB_IO_STAT] & 0x20;
trigger_oam_interrupt(gb);
}
GB_STAT_update(gb);
gb->oam_interrupt_line = false;
GB_SLEEP(gb, display, 12, 4);
GB_SLEEP(gb, display, 12, 2);
gb->ly_for_comparison = gb->current_line;
if (gb->current_line == LINES) {
/* Entering VBlank state triggers the OAM interrupt*/
/* Entering VBlank state triggers the OAM interrupt */
gb->oam_interrupt_line = gb->io_registers[GB_IO_STAT] & 0x20;
trigger_oam_interrupt(gb);
GB_STAT_update(gb);
gb->oam_interrupt_line = false;
gb->io_registers[GB_IO_STAT] &= ~3;
gb->io_registers[GB_IO_STAT] |= 1;
gb->io_registers[GB_IO_IF] |= 1;
trigger_oam_interrupt(gb);
GB_STAT_update(gb);
gb->oam_interrupt_line = false;
if (gb->io_registers[GB_IO_STAT] & 0x20) {
gb->stat_interrupt_line = true;