Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!rice!sun-spots-request
From: dan@breeze.bellcore.com (Daniel Strick)
Newsgroups: comp.sys.sun
Subject: Re: Xylogics XY 753 with CDC XMD-II (9772) (sun-spots v9n70, v9n71)
Keywords: Hardware
Message-ID: <5719@brazos.Rice.edu>
Date: 12 Mar 90 15:31:37 GMT
Sender: root@rice.edu
Organization: Sun-Spots
Lines: 7
Approved: Sun-Spots@rice.edu
X-Refs:  Original: v9n70, Replies: v9n71
X-Sun-Spots-Digest: Volume 9, Issue 82, message 1

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.

Dan Strick, aka dan@bellcore.com or bellcore!dan, (201)829-4624