Judge did the original work, then I did some after.
The CPU instruction codes are not documented, so Judge did what he could, and I fixed a couple of bugs.
You need to run it in windowed mode (mouse pointer doesn't show up in full screen with standard MAME).
It boots up, everything on the main screen works, use the mouse to click on stuff. The inbuilt solitaire game works too (I've even won it a few times).
Some carts work, such as Lights Out, Wheel of Fortune etc. Frogger is playable with minor bugs. Most other carts have serious issues which I think are related either to misunderstood banking, or CPU problems.
The CPU has 3 types of sound but only the 1-bit DAC is emulated.
As for the other emulator, you can get it (with instructions) from my site. Everything works on it except the sound has the same limitation as MAME, and Jeopardy doesn't work.