SixtyClone" Commodore 64 Replica PCBs from Bob's Bits on Tindie
Resurrecting a dead C64 motherboard : r/c64
c64 motherboard | Computer history, Old computers, Motherboard
MJK's Commodore Hardware Overview: Commodore 64
Motherboard - C64-Wiki
How to identify C64 and SID model | ilesj's blog
PetterHans on Twitter: "Cloning of the C64 KU Motherboard done. Layout and Schematics done, but not Design Rules Checked yet. Been quite exhausting project. https://t.co/UhAv63DbVg" / Twitter