Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!ucsd!ucbvax!XEROX.COM!Sprague.WBST311
From: Sprague.WBST311@XEROX.COM
Newsgroups: comp.os.cpm
Subject: Re: Xerox 820... upgrade to DS/DD
Message-ID: <900529-160934-2097@Xerox>
Date: 29 May 90 12:29:28 GMT
Sender: usenet@ucbvax.BERKELEY.EDU
Reply-To: Sprague.WBST311@Xerox.COM
Organization: The Internet
Lines: 23


> I have a Xerox 820 with 2 SS/DD drives.

By the looks of it, Peter has an 820-II, not an 820.  I have some comments
on Rogers message though.

While it's true that the Xerox 820 can ONLY handle single density, it can
indeed handle double sided drives, 5 1/4 or 8 inch.  And yes, you can use
"cheepy IBM-PC 360K" drives on them ... you will just end up with DS/SD
drives.

As to the 820-II, I had a pair of "cheepy IBM-PC 360K" drives on mine.  Let
me point out that you will want to use CONFIGUR, to change the step rate to
6 mS.

There is one thing to watch out for however, when converting a Xerox 829-II
(and 820 no doubt).  That is the drive cable.  Many of the single sided
disk cables are missing the wires carrying the signals needed for the
double sided drives.  I no longer remember which ones, but if I remember
right, four wires are missing (two are grounds).

				~ Mike
				  Sprague.Wbst311@Xerox.Com