Hi, I think I have this same problem, no matter what configuration I use, the game just doesn't work and I think the problem is with the adapter I use.RetroSwim wrote: ↑Sun Mar 28, 2021 4:40 pm I've sent a DM to soniccd, but in a nutshell, it turns out my TL866 adaptor was to blame.
It allows you to program the 32Mbit EPROM in 4Mbit chunks. The A18-A20 selection logic was wired contrary to the silkscreening on my adaptor, so while each 4Mbit chunk was written correctly, they were written in the reverse order.
So with a combination of a byteswapped ROM, and operating my adaptor "correctly", I now got soniccd's board to work.
You couldn’t kindly post a picture of the adapter you use, maybe it’s the same one I use, and since you’ve managed to solve your problem, this may be the light at the end of the tunnel I need to make the blessed EPROM work.