Replacement IC's for retro computers

J-CIA / FPGA CIA (6526 / 8521)

J-VIC / FPGA VIC-II (6569 / 8565)

J-CPU / FPGA CPU (6510 / 8500)

June 2025: J-CPU264 (7501/8501 replacement) is released! Get it from Run Stop Re-Store

"J-Chips" featured on Retro Recipes video: It's Real: A Brand New 1980s Commodore 64 Clone in 2023!

Testing videos on youtube