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PLA Replacement Options: Revision history

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23 September 2026

  • curprev 22:3922:39, 23 September 2026 Josh talk contribs 7,402 bytes +177 Add an illustrating image of the board the page is about undo
  • curprev 22:2522:25, 23 September 2026 Josh talk contribs 7,225 bytes +2,729 Rewrite from Individual Computers' and Daniel Mantione's own pages: the PLA is a 28-pin DIP at U17 on long boards but a 64-pin 251715/252535 at U8 on the 250469; SuperPLA V3 explicitly does NOT support 250469 and is EOL; remove the unsourced CPLD/FPGA comparison table and the PLCC-puller instruction undo

22 January 2026

24 April 2025

  • curprev 13:5713:57, 24 April 2025 Josh talk contribs 4,529 bytes +12 →⚖️ Comparison summary undo
  • curprev 13:5613:56, 24 April 2025 Josh talk contribs 4,517 bytes +4,517 Created page with "The original '''MOS 906114-01 Programmable Logic Array (PLA)''' in early C64 board revisions (ASSY 326298 → 250466) is _the_ single highest-failure-rate part in the machine. It runs hot (≈ 65 °C surface on an un-ventilated bread-bin), consumes ≈ 120 mA, and any internal electrical overstress manifests as: * '''Black screen / no border''' on power-up. * Colour-flashing “garbage” that crashes after warm-up. * Selective cartridge or bank-switch errors (E..." Tag: Visual edit: Switched
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