Not that simple. Needs a separate CPU core and probably some extreme cart remapping in MESS, I'll handle it.
Bah, fine. I already duplicated the G65816 core into an SA1 core and was in the process of hooking up the MMIO writes to cpu_set_info. I figured I could have it going by the time you wake up tomorrow, seeing as you're probably going to bed soon.
If you're meaning my SGB WIP code, I'll have to ask forum goers. It seems I don't have it on my system anymore
That's exactly what I meant.