Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!cs.utexas.edu!uunet!zephyr.ens.tek.com!tekcrl!tekgvs!keithe
From: keithe@tekgvs.LABS.TEK.COM (Keith Ericson)
Newsgroups: comp.sys.ibm.pc
Subject: Re: AT BIOS's supporting > 1024 cylinders
Message-ID: <6286@tekgvs.LABS.TEK.COM>
Date: 3 Nov 89 01:14:51 GMT
References: <1120.254FF5A5@busker.FIDONET.ORG>
Reply-To: keithe@tekgvs.LABS.TEK.COM (Keith Ericson)
Organization: Tektronix, Inc., Beaverton,  OR.
Lines: 19

In article <1120.254FF5A5@busker.FIDONET.ORG> Howard.Spindel@f8.n30112.z1.FIDONET.ORG (Howard Spindel) writes:

>A controller which does not support > 1024 cylinders only has 10 bits
>of cylinder address to play with and cannot generate a cylinder
>address >= 1024.
>Many of the original IBM AT with the WD1002 controller have this
>problem.  I had to upgrade to a WD1003 to get my Maxtor drive to work.

Minor nit: you'll need the WD-1003A controller to get >1024 cylinder
                                  ^
capability.

kEITHe

PS -  Anyone want to buy (one or several) WD-1003-non-A controllers?

PPS - Just joking - I couldn't sell them 'cuz it would cost Tek more
      in paperwork than it's worth to unload these things.  Unless
      somebody wants to buy all seven of them at one shot...