APPLE CRAPPLE

I integrated the 4164 DRAM decoder wiring into the logic board this weekend. It was very difficult to troubleshoot, and on retrospect, I th...

After Review of my plan and schematics, I noticed a small error in the Eagle schematic I posted earlier. Pin 11 of the socket must be con...

I ran jumpers wires on the back of the Apple II+ logic board to route the various signals I needed (PHI_0, AX, A14&A15) to the J1 socket...

I managed to add my modifications back to the Apple II logic board to get the 4164 RAM enabled. It seems to be working! However, I want to a...

I spent a number of hours last night and tonight trying to figure out why my modified Apple II+ was not beeping, and instead showing a scree...

Replacing the RAM in my Apple II+ has become a bit of a project in and of itself. Sure I could just buy some 4116 (16K bit) DRAM , but that...