The 6502to8501 is a device that allows you to use a 6502 CPU in your Commodore TED series computer, it allows you to bring a dead computer back to life. The 8501 CPU in Commodore TED computers has an extremely high failure rate and therefore, replacements are often a necessity to use these classic computers. The device is an adapter that interfaces a 6502 to the 8501 signals with 74xx bus transceivers in between in order to implement the AEC funcitonality. Also, the CPU port is implemented with standard 74xx logic chips. A GAL16V8 is used as a controller for the CPU.

Unlike a 6510 based CPU replacement, the 6502to8501 has the original layout of the CPU port and therefore does not need a modified KERNAL. Also, games with fastloaders work with the 6502to8510, but not with a 6510 CPU adapter.

No "weird" parts have been used in the 6502to8501, it can be built from standard parts that are all still in production. Therefore, there is a high chance this device can still be built 10 or 20 years from now.

Due to space constraints, the use of SMD parts is a necessity. The GAL 16V8 and 6502 is are the only THT components, the rest of the components are surface mounted.

Schematics and more information can be found of the webpage of the replacement.