Path: utzoo!utgpu!water!watmath!clyde!att!westmark!dave
From: dave@westmark.UUCP (Dave Levenson)
Newsgroups: comp.sys.ibm.pc
Subject: Re: hard disk problem
Keywords: hard disk, WA2, Seagate
Message-ID: <249@westmark.UUCP>
Date: 25 Jul 88 02:51:30 GMT
References: <2546@mipos3.intel.com> <16800323@clio> <5739@gssc.UUCP> <2810@mit-amt.MEDIA.MIT.EDU>
Organization: Westmark, Inc., Warren, NJ, USA
Lines: 27

In article <2810@mit-amt.MEDIA.MIT.EDU>, usenet@mit-amt.MEDIA.MIT.EDU (Remote news user) writes:
> AT-clone). The hard disk is a Seagate ST-225. The problems are:
...
> 	1. The hard disk drive operation light which connects to the disk 
> control board is on only when there is a disk operation. But the light on 
> the hard disk (ST-225) is always on. Is this normal?

Yes, this is normal operation for the AT-type (WA2) controller.
The light on the drive only goes out when the other drive (D:) is
selected.

> 
> 	2. When the computer system is operating at 12MHz, 0-wait, there
> is always some bytes of data been changed randomly in the hard disk write 
> operation...

I suggest buying a disk controller designed to operate at 12 MHz
with no wait-states.  I have tried a 12-MHz 0-wait machine, and I
find trouble with the video board (random garbage on the display)
unless I insert one wait-state.  The disk controller works okay,
though.

-- 
Dave Levenson
Westmark, Inc.		The Man in the Mooney
Warren, NJ USA
{rutgers | att}!westmark!dave