Fixed dmg_sound-1
@@ -491,6 +491,9 @@ void GB_apu_write(GB_gameboy_t *gb, uint8_t reg, uint8_t value)
case GB_IO_NR21: {
unsigned index = reg == GB_IO_NR21? GB_SQUARE_2: GB_SQUARE_1;
gb->apu.square_channels[index].pulse_length = (0x40 - (value & 0x3f));
+ if (!gb->apu.global_enable) {
+ gb->io_registers[reg] &= 0x3f;
+ }
break;
}
