Building a ferrite core memory, part 2

My ferrite core memory is progressing nicely. I have received the PCB and assembled it for the most parts.

Core memory shield without sense circuit

This evening I tried out how the H bridges worked – after a few tweaks in the Arduino code I was able to get this sequence out:

Bit read values from an array of cores.

The only remaining things are to assemble the sense line circuit and to do the final testing and tweaking, which will most likely take a long time.