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Fixed HDMA regression

This commit is contained in:
Lior Halphon 2018-06-16 23:52:24 +03:00
parent ca9249d4db
commit d81c23cb16
1 changed files with 3 additions and 1 deletions
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4
Core/memory.c
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@ -906,15 +906,17 @@ void GB_dma_run(GB_gameboy_t *gb)
void GB_hdma_run(GB_gameboy_t *gb) void GB_hdma_run(GB_gameboy_t *gb)
{ {
if (!gb->hdma_on) return; if (!gb->hdma_on) return;
while (gb->hdma_cycles >= 0x4) { while (gb->hdma_cycles >= 0x4) {
gb->hdma_cycles -= 0x4; gb->hdma_cycles -= 0x4;
GB_write_memory(gb, 0x8000 | (gb->hdma_current_dest++ & 0x1FFF), GB_read_memory(gb, (gb->hdma_current_src++))); GB_write_memory(gb, 0x8000 | (gb->hdma_current_dest++ & 0x1FFF), GB_read_memory(gb, (gb->hdma_current_src++)));
if ((gb->hdma_current_dest & 0xf) == 0) { if ((gb->hdma_current_dest & 0xf) == 0) {
if(--gb->hdma_steps_left == 0){ if (--gb->hdma_steps_left == 0) {
gb->hdma_on = false; gb->hdma_on = false;
gb->hdma_on_hblank = false; gb->hdma_on_hblank = false;
gb->hdma_starting = false;
gb->io_registers[GB_IO_HDMA5] &= 0x7F; gb->io_registers[GB_IO_HDMA5] &= 0x7F;
break; break;
} }