This is my replica of an original Acorn 6502 CPU Board as used in the System 1, it is based on the Issue 3 PCB.
When building the board take care to fit the CPU the correct way around, its backwards with respect to all the other ICs !
Sometimes the crystal doesn't reliably start-up, the fix is to add a few pF across the crystal, try 4p7 ?
Schematic
Bill Of Materials
Front Panel Drilling
Blank PCB
