Here is a short video with the "usual" blink test using a program loader I made those days.:
Here are some photos of the internals of the eprom emulator:
Here the original schematics used during the assembly (I used to mark a transparent color for each connection that I made. This explains the colors on schematics):
I recently had the idea to design a new "eprom emulator" mini board with a cheap 29F010 flash that fits perfectly into three contiguous eprom sockets on the 8085 board, for a total of four selectable pages of 6KB each.
Here is the 3D model made with KiCad 4:
If I have time I will build it to be able to update the firmware with the serial "Arduino style", and try to load a Basic interpreter.