Retro Computer Spares
Parts to assist in repairing Commodore PET Computers
Diagnostics Connector Kit:
This is required to use the Original Commodore Diagnostics for the PET Computers.
The same connectors are used for all PET systems from the original 2001 up to the 8032 and 8096 systems, however there are different diagnostic ROMs for the different systems
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2532 ROM Replacement PCB:
The original MOS 2532 ROMs have a high failure rate and the standard EPROM replacement, a 2532 is far from ideal due to short supply, high prices and difficulty of programming with many modern programmers. Even then, most stock is old and also becoming less reliable.
To address this, we have a small PCB that allows a modern EPROM such as a 2764, 27128, 27256 or 27512 to be used in place of the original 2532 ROM. The new parts are 28 pin, rather than 24 and a small adapter PCB allows selection of the required 4KB block of memory in the larger chip. Using a 27512, one EPROM image can be made with both Commodore original ROMs and Diagnostic ROMs so the same data can be programmed into multiple chips and the correct data selected using on-board links.
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Coming Soon!
PETdrive SD Card Disk emulation:
32KB RAM Replacement / Upgrade PCB:
MC3446 Replacement PCB:
74154 Replacement PCB: