We tried the J-CIA on our Commodore 64, here’s how it was

I’m a geek, you’re a geek, we’re all geeks.

A while ago we talked about the upcoming project of a replacement CIA chip for the C-64 and it pointed to a YouTube video that showed an overexcited Perifractic demonstrating an upcoming J-CIA that would in theory be a drop-in replacement for any failing CIA chip.

Well, the C-64 variant has been available since this month and we purchased a pair to try out.

2023/08/092023/09/05 by wereallgeeks Categories: 100% Geek, C64CIA, Commodore 64, Computers and technology, Geekyness, Projects, RetrocomputingTags: BYOC64, C64, C64C, CIA chip, Commodore 64, DIY, electronics, Geek, j-cia, J-CIA 64, microchip, retro computer, retro computing, retro recipe, retrocomputer, retrocomputers, Retrocomputing 2 Comments

brand new Commodore 64 Complex Interface Adapter chip replacements (finally)

I’m a geek, you’re a geek, we’re all geeks.

And geeks fix up old computers. Or build them.

However, chips from the 80s are no longer in production. Sometimes there are modern replacement, such as EPROMs to replace ROM chips or FPGAs to replace old ICs. But sometimes such replacement doesn’t exit.

This was the case with the Commodore 64 (and Amiga) Complex Interface Adapter (CIA) chip. until now.

2023/04/192023/07/11 by wereallgeeks Categories: 100% Geek, C64CIA, Commodore 64, Computers and technology, Geekyness, Projects, RetrocomputingTags: 100% Geek, 1nt3r.net, Amiga, C128, C64, C64C, CIA chip, commodore, Commodore 128, Commodore 64, computer, drop-in, drop-in replacement, electronics, FPGA, Geek, Geekyness, j-cia, Jani Laatikainen, microchip, MOS-6526, Perifractic, replacement, retro recipe, Retrocomputing 1 Comment