Commodore C64C

Configuration

• Built: 1988, week 46
• Mainboard: Assy 250469 Rev 4 (short board with separate color RAM chip)
• CPU: 8500 (date code 3488)
• SID: 8580R5 (date code 3688)
• VIC-II: 8565R2 (date code 3888, type misprinted as “8656R2”)
• RAM: 64KB

Restauration Works

• Mainboard was recapped and cleaned.
• VIC and SID got heatsinks.

Trivia

• I reassembled this C64-C from different components that have been purchased separately.
• The case was originally planned for the Ultimate 64, but there was no way to properly mount the keyboard. The Ultimate 64 then moved to a classical “breadbin” case, and I had this C64 C case left.
• The seller of the mainboard wished that the mainboard would get a new life. His wish was granted. 🙂
• The VIC had a silver label “MOS 8565R2 3888 22” on it. When I removed it, I found “MOS 8656R2 3888” printed on the chip. This is a rare VIC with a misprint.

History

• 2022-12-10:
  • Took the C64 C keyboard from the Ultimate 64.
  • Recapped the mainboard. Used a bipolar cap for the SID audio path.
  • Cleaned the mainboard.
  • VIC and SID got heatsinks.
  • Assembled the system using the mainboard, case, and keyboard.
  • Full harness diagnostics showed everything is working perfectly.

• 2022-11-30: Bought a C64 C mainboard (250469, 252311 rev 4)
• 2022-06-11: Bought a C64 C Case