Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!uunet!snorkelwacker!bloom-beacon!primerd!ENI!S55!CUMMINGS
From: CUMMINGS@S55.Prime.COM
Newsgroups: comp.sys.ibm.pc
Subject: Re: WD Controller Help Needed
Message-ID: <132000027@S55.Prime.COM>
Date: 28 Nov 89 00:32:00 GMT
References: <20@<Nov>
Lines: 35
Nf-ID: #R:<Nov:-2000:S55:132000027:000:1708
Nf-From: S55.Prime.COM!CUMMINGS    Nov 28 00:32:00 1989


According to my Hardware Installation Guide for the WA3-16 I just purchased:

Pin Connects        Description
E2 to E3            Standard factory setting.  Selects primary addresses.
E5 to E6            Standard factory setting.  Selects primary addresses.
E1 to E2            Selects secondary setting.
E4 to E5            Selects secondary setting.
J6 Open             Factory setting.  Precompensation = 125ns.
J6 Short            Precompensation value = 187ns.
J7 Open             Factory setting.
J7 Short            Two speed spindle type drive used.

NOTE:
DO NOT MOVE PRIMARY ADDRESS JUMPERS UNLESS THE OPERATING SYSTEM IS CONFIGURED
TO ACEPT (sic) TWO HARD DISK CONTROLLERS.  CERTAIN OPERATING SYSTEMS SUPPORT
TWO CONTROLLERS IN THE SAME SYSTEM.  IBM DOS AND MOST IBM-COMPATIBLE OPERATING
SYSTEMS DO NOT SUPPORT THIS FEATURE.

I installed this in a system I configured for my father (without changing any
of the "factory settings", and it worked fine).  I don't know what they mean
by "primary address" and "secondary address", but maybe that's the hook you
are looking for?
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Kevin J. Cummings                       Prime Computer Inc.
20 Briarwood Road                       500 Old Connecticut Path
Framingham, Mass.                       Framingham, Mass.

InterNet:  CUMMINGS@S55.Prime.COM
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Std. Disclaimer: "Mr. McKittrick, after careful consideration, I've come
                  to the conclusion that your new defense system SUCKS..."
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