1 Jun
2008
1 Jun
'08
12:57 p.m.
Date: Sun, 1 Jun 2008 20:45:02 +0200
From: lehmann at ans-netz.de
To: cctalk at classiccmp.org
Subject: Re: Introduction
dwight elvey wrote:
Hi
I don't thinks so. as far as I know all ST251's supported auto stepping.
There might be a minor difference when single stepping using the millisecond
timing. As I recall they needed something on the order of 8 or 10 milliseconds.
One might be a little faster.
When I was playing with mine, the original drive was 6 milliseconds.
Way to fast for the ST251. I then switches to using the auto stepping,
since then the controller didn't need to know anything about the step rate.
As I recall, the WD1000 will use auto stepping if you select 0 for the step
rate.
Dwight
_________________________________________________________________
Give to a good cause with every e-mail. Join the i?m Initiative from Microsoft.
http://im.live.com/Messenger/IM/Join/Default.aspx?souce=EML_WL_ GoodCause
Hi
I looked it up. If the pulse for the step is less than 0.5ms it assume
the buffered or auto step. I was confusing compensation with the
head selects that also change with the ST412 standard.
Dwight
Do you know if this changed between ST251(-0) and ST251-1? Because -0
drives are working but very hard to find - -1 are easier to find.