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Emulate the HALT bug on a DMG

This commit is contained in:
Lior Halphon 2016-09-20 01:22:21 +03:00
parent 1a3a96762b
commit f049284324
1 changed files with 6 additions and 0 deletions
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6
Core/z80_cpu.c
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@ -1333,7 +1333,10 @@ void GB_cpu_run(GB_gameboy_t *gb)
{
gb->vblank_just_occured = false;
bool interrupt = gb->interrupt_enable & gb->io_registers[GB_IO_IF];
bool halt_bug = false;
if (interrupt) {
halt_bug = gb->halted && !gb->is_cgb; /* Todo: Does this bug happen on a CGB? */
gb->halted = false;
}
@ -1363,6 +1366,9 @@ void GB_cpu_run(GB_gameboy_t *gb)
}
else if(!gb->halted && !gb->stopped) {
uint8_t opcode = GB_read_memory(gb, gb->pc++);
if (halt_bug) {
gb->pc--;
}
opcodes[opcode](gb, opcode);
}
else {