Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!rice!sun-spots-request
From: turcotte@asterix.drev.dnd.ca (Guy Turcotte)
Newsgroups: comp.sys.sun
Subject: Re: Xylogics XY 753 with CDC XMD-II (9772) (sun-spots v9n70, v9n71)
Keywords: Hardware
Message-ID: <5751@brazos.Rice.edu>
Date: 13 Mar 90 17:46:49 GMT
Sender: root@rice.edu
Organization: Sun-Spots
Lines: 14
Approved: Sun-Spots@rice.edu
X-Refs:  Original: v9n70, Replies: v9n71 v9n82
X-Sun-Spots-Digest: Volume 9, Issue 82, message 6

dan@breeze.bellcore.com (Daniel Strick) writes:

>I once asked a CDC customer service engineer about this.  He verified the
>suspicion: the older CDC 9772 disk drives do not support specification of
>the high order cylinder address bit during cylinder select (aka "tag-1")
>using the "tag-4" signal line.  The Xylogics 753 cannot address the last
>40 cylinders on these drives.

Somebody sent  me a message  2 weeks ago about the fact that Xylogics may
have a firmware revision of the 753 controller that address that problem.
(I think it's revision 2.2)

Guy Turcotte
turcotte@asterix.drev.dnd.ca