Ok, so for the past two weeks or so I've been fiddling with the Unisystem board that I have. I picked up a cheap board and a cheap set of Hogan's Alley roms just to get a PPU, and I swiped a CPU froma non-working NES. Hogan's Alley works, but obviously I can't play it on my setup with no gun. With the Universus nowhere in sight any time soon, I've been playing with some hacked ROMs that allow you to use any PPU with certain games. However, I wasn't having ANY luck doing so. I'd burn the EPROMs, but nothing would work.
We had a repair party this weekend, and I took the board to Arcadenut's house. He graciously lent me a working SMB board that I could use for ZapCon. In the mean time, I experimented with the SMB EPROMs and my board, and no dice. I started to wonder if my board was actually not working correctly. Hogan's Alley boots, and I got Vs. Pinball to boot (uses the same PPU), but nothing else would work. Not even taking his good ROMset and PPU and putting it on my board. I even used my EPROM burner and made copies of his ROMs since I wasn't sure what Romset in MAME worked best with the PPU hacks. Still no luck.
Then, last night, I read that SMB REQUIRES you to have a CPU or a dummy CPU on the second side in order to work. Arcadenut's working board has the dummy CPU - mine doesn't. So tonight I loaded his Romset onto my board, put the PPU in, and added the dummy CPU...
...and what do you know, my board worked with his roms!! Perfectly, even!!!
Feeling emboldened, I burned a new set of EPROMs, adding in the PPU hacks. I put my Hogan's Alley PPU back in, and then I did a jumper trick... The dummy CPU can be replaced by simply running a jumper between two pins on the second CPU side. So I did that, crossed my fingers, and fired it up....
And had my own copy of SMB running on my board!!!
So, it looks like Janky Kong will be at ZapCon running Super Mario Bros!