So, I just found about this emulator, but I can't get any of the 5200 games from here to run in it. The emulator allows me to select the bin and the type then goes to the self test screen, and I can't get past that...
I know on WiiXL I have to select the cart then warm reboot and it plays fine... is there some step I'm missing here?
EDIT: So, after finding there were also 800XL games on here, I tried those and they work...but most are too slow to be playable. So.... maybe the emu isn't worth it in the end. But the coloecovision emu on the same site seems good:)