Commodore 128 Diagnostic Specification, thanks to Ove Mejlgaard/ElFi.
Commodore C128 Tekniske Data (Swedish), thanks to DDHF.
C128 Personal Computer Technical Notes, thanks to DDHF.
C128 VRAM Upgrade Instructions, thanks to DDHF.
Vejledning for Service Diskette C128 C1570 C1571, Thanks to DDHF.
SAMs Computer Facts CC18 – Commodore Model C128.
This one was put on top of the stack.
Regards to Kevin Ottum and John Watson on facebooks C128 group.
Superbase The Programmable Database for your Commodore 128.
Service Manual C128D Addendum, thanks to Jozsef Vamosi.