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From: jdl@purdue.UUCP (Jon Loeliger)
Newsgroups: net.micro
Subject: help? Xerox 820 info?
Message-ID: <378@mordred.purdue.UUCP>
Date: Sun, 1-Dec-85 16:13:33 EST
Article-I.D.: mordred.378
Posted: Sun Dec  1 16:13:33 1985
Date-Received: Mon, 2-Dec-85 03:46:57 EST
Distribution: na
Organization: Purdue Zoo
Lines: 25
Keywords: Xerox 820, Z80, disk drives

I am the *proud* owner of a Xerox 820 Big Board computer.  I would like
to put some sort of floppy on it.  The problems I face are simple...

First of all, I'm not sure if I have a Big Board I or II.  (And what
are the differences?)  Also, I am of the belief that the Monitor I have
("Xerox 820 Ver 2.0") is capable of supporting only single sided, single
density drives, either 5 or 8 inch.  Right now the system has a Western
Digital 1771 drive controller, and is supposed to be able to handle any
Shugart compatible drive. (Ah, yes, the Shugart division of Xerox!)

I looked around some...  I can't seem to locate anything that isn't hard
drives, and PC compatible let alone as antiquated as single sided...

I'm interested in either knowing how practically (read: cheaply) I can
convert the ROM to handle double sided and/or double density drives, or
obtaining some single sided, single denisty 8 inch drives.

If anyone has some information in this light that might be helpful, I
would appreciate it if they would mail a response to me.


who?:	Jon Loeliger
arpa:	jdl@Purdue.EDU
uucp:	...{decvax,ucbvax,ihnp4,pur-ee}!purdue!jdl
late-nights:	(317) 743-4459