PLA20V8 model B is a MOS 906114-01 PLA replacement suitable for all C64 long boards in both PAL and NTSC variants. Timing of all logic is compatible with a MOS 904114-01 PLA and fully working with KERNAL replacements, Super Zaxxon and Epyx Fastload cartridges. Please note that the PCB layout in model B is different from the original model A and is not interchangeable.
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Note: PLA20V8 is not compatible with the C64C short board or the C128. The PLAs in both systems are substantially different than the MOS 904114-01 and the PLA20V8 will not fit or work.
Manufactured with the approval of the PLA20V8 designer Daniël Mantione. A donation has been made to the designer to help grow the retro computing community.
Please note that the adaptor has modern round pins which is not flat. This might stretch the stamped pin socket contacts on the motherboard after multiple insertions. A little light oil or contact cleaner should be added to each pin socket to assist with insertion. Alternatively, a separate stamped pin socket may be inserted first, with the adaptor inserted into that socket to preserve the integrity of the original motherboard socket.