I think the region is usually read from the protection asic (at lease that is where MAME changes it), so I assume you can patch wherever that value is read into in RAM.Yes, so I assume those are 100% no go, but I mean games like Demon Front, which has different versions, English included. I thought that was tied to the cart, as I have tried them in different mobos and the language stays with the cart, not the motherboard.