WTD: NEC V20 Hardware Manual, IBM PC schematics

From: Tony Duell <ard_at_p850ug1.demon.co.uk>
Date: Tue Mar 11 17:35:20 2003

> > By the way, regarding the orignal message: I do have a copy of the
> > IBM PC Tech Ref (PC, not XT) with the schematics. I may be able to
> > spare some nanocycles to scan them sometime in the next month or so
> > if nobody else has already done so.
> That would be great - thanks. Does the Techref cover the uPD765 floppy disc
> controller as well? (did IBM use that chip in the original PC?) Speaking of

The early editions of the TechRefs included the disk controller card
schematics. Later on,. these schematics were moved to the Options and
Adapters TechRef, but were still available. None of the TechRefs AFAIK
included the 765 (or 8272, much the same chip) data sheet.

And yes, the original PC disk controller used the 765 chip.

> Now I wonder if IBM still have any Techrefs in stock...

They did some 6 or 7 years ago when I ordered my set...

-tony
Received on Tue Mar 11 2003 - 17:35:20 GMT