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From: fritz@mit-caf.MIT.EDU (Frederick Herrmann)
Newsgroups: comp.sys.ibm.pc,comp.dcom.modems
Subject: Re: Serial port definitions ...
Keywords: Registers ?  8250 ... etc.
Message-ID: <1691@mit-caf.MIT.EDU>
Date: 5 Jan 89 21:02:28 GMT
References: <4013@hubcap.UUCP> <6168@hoptoad.uucp>
Reply-To: fritz@mit-caf.UUCP (Frederick Herrmann)
Distribution: na
Organization: Microsystems Technology Laboratories, MIT
Lines: 23

In article <6168@hoptoad.uucp> pozar@hoptoad.UUCP (Tim Pozar) writes:
>In article <4013@hubcap.UUCP> oolidjr@hubcap.UUCP (Joe Moll) writes:
>>
>
>   The best book by far, is unfortunatly not being made any
>longer.  If you can get your hands on an early _IBM Personal
>Computer Hardware Reference Library, Technical Treference_ book,
>its worth its weight in gold.  The part number I have on mine is
>6936808.  It has full details on registers and port
>descriptions.  
>   The later book has the serial port and most of the other
>hardware descriptions ripped out of it.

This isn't quite fair, the tech ref was getting so thick as IBM kept
introducing new PC products, that they had to spin off a separate
`Options and Adapters' tech ref manual.  For a while I was on the
mailing list, and would get some new pages every time IBM introduced a product.
  My O & A manual was three well-stuffed volumes before they cancelled
my subscription :-( filled with info about obscure products
like the `Voice Communication Adapter'.

			- Fritz Herrmann
			  fritz@caf.mit.edu