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Halt the CPU while the SGB animation is playing

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This commit is contained in:
Lior Halphon 2018-11-24 13:34:07 +02:00
parent 2d6d1e6325
commit 389d8ae045
1 changed files with 12 additions and 0 deletions
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12
Core/gb.c
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@ -351,6 +351,18 @@ exit:
uint8_t GB_run(GB_gameboy_t *gb) uint8_t GB_run(GB_gameboy_t *gb)
{ {
if (gb->sgb && gb->sgb->intro_animation < 140) {
/* On the SGB, the GB is halted after finishing the boot ROM.
Then, after the boot animation is almost done, it's reset.
Since the SGB HLE does not perform any header validity checks,
we just halt the CPU (with hacky code) until the correct time.
This ensures the Nintendo logo doesn't flash on screen, and
the game does "run in background" while the animation is playing. */
GB_display_run(gb, 228);
gb->cycles_since_last_sync += 228;
return 228;
}
GB_debugger_run(gb); GB_debugger_run(gb);
gb->cycles_since_run = 0; gb->cycles_since_run = 0;
GB_cpu_run(gb); GB_cpu_run(gb);