The J-CPU64 C64 upgrade provides a modern replacement for the Commodore 64’s original MOS 6510/8500 CPU. Created by Jani Laatikainen, this FPGA-based chip delivers full compatibility while improving performance. Installation is simple, requiring no soldering or board modifications. The J-CPU64 C64 Upgrade preserves the classic C64 experience while improving system reliability. Users can install it easily and maintain their original setup.
Performance and Compatibility
Built using FPGA technology, the J-CPU64 replicates all features of the original CPU, including illegal opcodes. It has been tested across all C64 mainboard revisions, the SX-64, and modern clones such as EVO64 and Reloaded MKII. It works seamlessly with modern chip replacements like VIC-II Kawari, NeatPLA, and J-CIA. Compatibility also includes a wide range of peripherals, including floppy drives, fast loaders, SD2IEC, TapeCart, and more. This ensures stable operation across multiple setups.
Availability and Integration
The J-CPU64 fits directly into any C64 system without modifications. Its black PCB matches the J-CIA design for a cohesive appearance. Pre-orders for the J-CPU64 are now open via the Retro8bitshop.com, with shipments slated to begin in the first or second week of May 2024. Pre-ordering guarantees access to the first production batch. With proven compatibility, plug-and-play installation, and modern design, the J-CPU64 C64 Upgrade is a practical solution for any Commodore 64 owner.
Who’s going to get a J-CPU64?