Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!watmath!clyde!cbatt!ihnp4!ihlpl!psfales From: psfales@ihlpl.UUCP Newsgroups: comp.sys.ibm.pc Subject: Re: Western Digital Controller Message-ID: <1691@ihlpl.UUCP> Date: Tue, 3-Feb-87 09:37:57 EST Article-I.D.: ihlpl.1691 Posted: Tue Feb 3 09:37:57 1987 Date-Received: Wed, 4-Feb-87 07:13:27 EST References: Organization: AT&T Bell Labs, Naperville, IL Lines: 31 > I just bought a used 20M hard disk from a friend, who had been using it as a > 30M with an RLL controller. He also threw in a Western Digital controller, > so I now have to reformat the disk for 20M. Unfortunately, he didn't give me > any documentation (he couldn't find it.) The board has a whole bunch of pins > on it for configuration, but there are no jumpers/shorting blocks. I > cannibalized some jumpers from my multifunction card, but trial and error > plugging and unplugging of jumpers hasn't placed anything meaningful at > C800:0000. Can someone help me? I need to know what each group of pins is > for, and/or what each combination of jumpers means. I tried to send email to this person, but the mailer choked so I will try here. My WD controller came with a "manual" consisting of a large double sided sheet of paper. There wasn't an awful lot of information, but it did explain what each jumper is for and how to do a low level format. If anyone is really desperate, I could probably provide a copy but I would suggest trying to sweet talk your local computer store - I would think that any store that sells systems with WD controllers would have extra copies around. For an interesting test, put in the jumper that causes the non-FF values to appear at C800:0000, enter DEBUG, and type g=c800:5 Hope that helps -- Peter Fales UUCP: ...ihnp4!ihlpl!psfales work: (312) 979-7784 AT&T Information Systems, IW 1Z-243 1100 E. Warrenville Rd., IL 60566