- 1x Authentic programmed P556PT2 PLA Integrated Circuit (Fully programmed and socket-tested)
The Pure Authentic Experience (Not a GAL/EPROM clone)
Is your Commodore 64 presenting a blank black screen or displaying garbled characters on startup? A dead Programmable Logic Array (PLA) chip is usually the culprit. If you want a genuine, period-correct silicon replacement rather than a modern PCB adapter, this programmed chip is the perfect solution.
Our replacement is an authentic P556PT2 integrated circuit (IC) programmed with the precise logical configuration used originally by Commodore. The P556PT2 serves as an exact period-correct clone of the classic Signetics 82S100 and PLS100N chips. It fits elegantly and natively flat into any standard motherboard socket without raising the vertical profile of your chip assembly or requiring extra clearances.
Carefully Programmed & Verified
Unlike modern GAL-based emulator boards or bulky EPROM adapters, this chip runs natively with the exact matching logic timings. Each chip is programmed using professional calibration machinery and thoroughly bench-tested on standard hardware to ensure absolute plug-and-play reliability right out of the box.
Restore Classic Timing Integrity
Selecting an original programmed logic array guarantees zero signal-skew issues, restoring native timing integrity across your chip bus. It provides a simple, direct, and stable drop-in solution to resurrect your classic computer.
Broad Compatibility
- Direct drop-in socket replacement for any motherboard revision using the original Commodore MOS 906114-01 PLA.
- Fully compatible with Commodore 64 (C64) and portable SX-64 systems.
- Compatible with alternate kernels, Super Zaxxon, and Epyx FastLoad cartridges.