Resources
Wiki
zimmers.net – schematics, firmware, manuals, software
Ancient Electronics – how to add HDD
oldcomputer.info
Internals
Motherboard
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.
Keyboard
Power Supply
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