Commodore PC 20-III


Wiki – schematics, firmware, manuals, software
Ancient Electronics – how to add HDD



Motherboard Revision 6.2, compare against Revision 5.7a from Commodore PC10-III.

Floppy Disk Drive

PC-20 III supports only 360K floppy disk drives and comes with Chinon FZ-502.


Power Supply


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