> I didn't know you could do that. It does not work running mameui64 from the command > line. You can also start megatech from the BIOS folder and in the in game menu (tab > button) you can choose the files for each cart. This doesn't work either. I'll have > to compile regular mame and give it a try.
I knew command-line interaction worked for UI .. perhaps this is something that isn't covered? A normal command-line build works (although remember issues with z80 might cause some problems with switching games). Even if they are megadrive games, there is still a z80 used for them.
You have to make sure that you have the new "HASH" folder and the "megatech.xml" file inside that for things to work. From my quick check of the MAMEUI release, there is none of that. No wonder they do not work!