Madly enought it actually works. Soldering the thing together was fairly trivial, and if you know how to wave a soldering iron around you would have no problem. Initially I was concerned that it was broken because the programming software on my PC would not detect the device, but I traced that to a dodgey serial cable.
With the correct cable, programming the EEPROM was a breeze. Take a sample .ASM file, compile it to hex code, then send it down the cable into the programmer. Then you flick the switch from “Prog” to “Run”, and voila:
Pretty basic but cool. Imagine the possibilities when each of those input switches could be detectors or bump switches, and the LED outputs could be motor controllers or relays. Now, I just have to think of an application.