Retro computing fan [DrMattRegan] has released the first in a series of videos detailing the creation of a Commodore 64 that does not use the official chipset.
Rather than using the Commodore MOS 6510, the creator has opted to build a replacement using two EEPROMs to act as a “rulebook” for the code to emulate the 6502 processor, as well as some SRAM chips to act as scratch memory, and standard logic chips to connect it all together.
The build is progressing well, and the core CPU is now implemented on a PCB and is able to run the Apple II version of Pac-Man.
The choice of EEPROMs is interesting, given their limited write cycles, but it appears that only a single write to each is needed.
