Overflow flag with ADC and SBC is untested against real hardware.
Several emulators have different implementations for checking the overflow flag. Some are optimizations or just different approaches, but some appear to have different behavior.
The results actual hardware produced should be investigated.
Overflow flag with ADC and SBC is untested against real hardware.
Several emulators have different implementations for checking the overflow flag. Some are optimizations or just different approaches, but some appear to have different behavior.
The results actual hardware produced should be investigated.