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From: mlinar@eve.usc.edu (Mitch Mlinar)
Newsgroups: comp.os.cpm
Subject: Re: Is this a Xerox 820 micro? If so, now what?
Message-ID: <27666@usc.edu>
Date: 23 Oct 90 00:49:47 GMT
References: <2499@ux.acs.umn.edu> <1990Oct22.093431.21630@techbook.com> <1990Oct22.094551.21727@techbook.com>
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In article <1990Oct22.094551.21727@techbook.com> fzsitvay@techbook.com (Frank Zsitvay) writes:
>In article <1990Oct22.093431.21630@techbook.com> fzsitvay@techbook.com (Frank Zsitvay) writes:
>>In article <2499@ux.acs.umn.edu> hughes@ux.acs.umn.edu (Steve Hughes) writes:
>>>labels. Also one card plugged into an edge connector.
>>         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>     was that card in the edge connector by any chance the monitor
>electronics???   does the main board have a card edge connector on it??

It is - no doubt at all - an 820-II.  They have two edge connectors on
them.  One (which is in use) is either for the floppy controller or
hard disk controller.  The other is for an 8088 card which, in turn, can talk
to an expansion box which can have all other kinds of goodies.

Most stock 820-II have the floppy card.  Look at the main 40-pin chip on this
small card; if it is a 1797, it is the floppy.  If it is a Z80-PIO, then it
is the hard disk controller.

-Mitch