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Product Description

With the Commodore Progammable Logic Adapter (PLA) ICs going bad in this day and age, many people are using EPROMs to replace the unit.  While a PLD-based PLA is best, EPROMs can provide satisfactory results, with sufficiently fast EPROMs.  If you want to try this out, here's a PCB that will adapt a 28 pin EPROM/EEPROM/FLASH ROM to the PLA footprint.

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Product Reviews

  1. Works great with ST M27C512-90B6 5 Star Review

    Posted by on 28th Jun 2015

    I screwed up my first one. Make sure you don't solder it backwards! Or buy spares like I did. Anyway, no problems detected after testing with EasyFlash, FC3, uIEC, 1541 Ultimate, and scene demos.

  2. Works exactly as advertised 5 Star Review

    Posted by on 4th May 2015

    This is a great time-saver for the hobbyist technician that still loves to keep their C64 running. Solder some pin headers and a socket on there (or get one already assembled) and certain EPROMs will work fine as a PLA. I used an Atmel AT27C512-70 with no problems at all. Other manufacturer's and speeds may not work as well, so check with other hobbyists before reporting it doesn't work.

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