Back in the day, I went nuts with RAM upgrades. First I had an Axlon "RAM-Cram" (yes, really) 32K board put into my 400. They gave me the old 8K board back, and I wondered what to do with it. After gaining some electronics experience, I decided to "cram" 16K more in there, so that my 400 would be as good as any 800 out there (almost).
So I sawed the 8K board in half lengthwise, soldered the top half to the 32K board with ribbon cable and added some gates and 8 more 4116s (24 in all). The mot