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Theorized HDMA behavior proven wrong

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This commit is contained in:
Lior Halphon 2022-06-17 15:58:37 +03:00
parent 9b5dc9eca7
commit 517f455486
1 changed files with 0 additions and 6 deletions
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6
Core/sm83_cpu.c
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@ -1631,9 +1631,6 @@ void GB_cpu_run(GB_gameboy_t *gb)
/* Wake up from HALT mode without calling interrupt code. */ /* Wake up from HALT mode without calling interrupt code. */
if (gb->halted && !effective_ime && interrupt_queue) { if (gb->halted && !effective_ime && interrupt_queue) {
gb->halted = false; gb->halted = false;
if (gb->hdma_on_hblank && (gb->io_registers[GB_IO_STAT] & 3) == 0) {
gb->hdma_on = true;
}
gb->dma_cycles = 4; gb->dma_cycles = 4;
GB_dma_run(gb); GB_dma_run(gb);
gb->speed_switch_halt_countdown = 0; gb->speed_switch_halt_countdown = 0;
@ -1642,9 +1639,6 @@ void GB_cpu_run(GB_gameboy_t *gb)
/* Call interrupt */ /* Call interrupt */
else if (effective_ime && interrupt_queue) { else if (effective_ime && interrupt_queue) {
gb->halted = false; gb->halted = false;
if (gb->hdma_on_hblank && (gb->io_registers[GB_IO_STAT] & 3) == 0) {
gb->hdma_on = true;
}
// TODO: verify the timing! // TODO: verify the timing!
gb->dma_cycles = 4; gb->dma_cycles = 4;
GB_dma_run(gb); GB_dma_run(gb);