git.y1.nz

commit 517f4554862fe9d4b2ce58b96986e43a4ba04d2a
parent 9b5dc9eca796bf6f10b0da2e34837e84b44646be
Author: Lior Halphon <LIJI32@gmail.com>
Date:   Fri, 17 Jun 2022 15:58:37 +0300

Theorized HDMA behavior proven wrong

Diffstat:
M
Core/sm83_cpu.c
6
------

1 file changed, 0 insertions(+), 6 deletions(-)
diff --git a/Core/sm83_cpu.c b/Core/sm83_cpu.c
@@ -1631,9 +1631,6 @@ void GB_cpu_run(GB_gameboy_t *gb)
     /* Wake up from HALT mode without calling interrupt code. */
     if (gb->halted && !effective_ime && interrupt_queue) {
         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_run(gb);
         gb->speed_switch_halt_countdown = 0;
@@ -1642,9 +1639,6 @@ void GB_cpu_run(GB_gameboy_t *gb)
     /* Call interrupt */
     else if (effective_ime && interrupt_queue) {
         gb->halted = false;
-        if (gb->hdma_on_hblank && (gb->io_registers[GB_IO_STAT] & 3) == 0) {
-            gb->hdma_on = true;
-        }
         // TODO: verify the timing!
         gb->dma_cycles = 4;
         GB_dma_run(gb);

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