Tag: 8500

2 matching upgrades

Showing 2 products.

StatusProductWhat it doesCompatibilityLinks
AvailableChecked Jul 30, 2026J-CPU64by Jani Laatikainen
c64sx 6465108500cpufpgachip replacementlow power

Current FPGA replacement for MOS 6510 and 8500 processors, including the documented instruction set and cycle behavior.

The official project page links three current retail channels, and AmericanRetro exposed a direct Buy Now route on 2026-07-30. The retailer describes a same-size, no-soldering drop-in replacement; that assumes the original CPU is already socketed. A soldered CPU still requires proper desoldering and a suitable socket.

Sources
  • Commodore 64 Exact model
  • Commodore SX-64 Exact model
J-CPU64 project pageBuy J-CPU64 from AmericanRetro
Find usedChecked Jul 30, 2026Original MOS 6510 and 8500 CPU Chipsby MOS Technology / Commodore
c6465108500cpuoriginal chipperiod parttested partchip replacementvintage

Tested period 6510 and 8500 processors for repairing a Commodore 64 with an original CPU.

Retroleum listed several tested 6510 and 8500 variants with stock on 2026-07-30, but the store was temporarily closed until approximately the beginning of August. These are finite harvested period parts. Confirm that ordering has resumed, whether the selected chip was socket-pulled or desoldered, its pin condition, and the return terms.

Sources
  • Commodore 64 Exact model
Retroleum tested C64 chipsSearch eBay for original MOS 6510 CPUsSearch eBay for original MOS 8500 CPUs