C64 cartridges on breadboard
What you see here is a Commodore 64 cartridge that I have created by sticking an EPROM and some other components on a breadboard.
c64
Commodore 64 custom PLA chip test
A while back I also made a prototype for C64 PLA chip replacement, but I never did any further tests and completed the project.
I thought that it was time to do some more tests on the chip. But will it pass the tests? Let's find out...
C64 Basic ROM in 27C64 EPROM
A while back I have bought a cheap second hand Commodore 64. Unfortunately it was broken, next to the PLA chip which I have fixed by binding a custom CPLD version of it, the BASIC ROM chip (901226-01) was also broken.
Commodore 64 PLA chip replacement
The most important chip in commodore 64 computer is the PLA chip. When this chip is broken, nothing will work and most certainly you will get a black screen after you try to turn it on.