I still need to do some work on this board. The RAM on the schematic is a 6116.
On the photos, the RAM is a TC551001

I have added a reset circuit and a radiator for the 7508

Vutrax Schematic    Vutrax Rats nets   Vutrax autorouted  Vutrax groundplanes == The 4 files in one Zip

HD61830 Library for Vutrax