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From: grege@gold.GVG.TEK.COM (Greg Ebert)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Problems with ST4096 and Original IBM-AT controller
Message-ID: <1136@gold.GVG.TEK.COM>
Date: 30 Jun 90 00:17:16 GMT
References: <20539@duke.cs.duke.edu> <1127@gold.GVG.TEK.COM>
Organization: Grass Valley Group, Grass Valley, CA
Lines: 9


There's some good info on hard disk controllers from Intel (82064) and
Western Digital (WD2010 and WD1010). These data sheets most of the nitty
gritty details on how to do most of the programming. I have seen WD1010's
in PC's.

The I/O addresses are 1F0-1F7 for the controller chip, 3F6 is a 'non-invasive'
read-only address for 1F7, and 3F7 bits 0-6 is read-only and gives head/drive
select and write-gate info. You can ignore 3F7.