25 Feb
2007
25 Feb
'07
10:29 p.m.
------------Original Messages:
Date: Sun, 25 Feb 2007 17:02:01 -0800
From: "Chuck Guzis" <cclist at sydex.com>
Subject: Re: New "D" drive -- WD Caviar
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
Message-ID: <45E1C109.17821.6AF8FBA at cclist.sydex.com>
Content-Type: text/plain; charset=US-ASCII
On 25 Feb 2007 at 16:05, Hollandia at ccountry.net wrote:
The new drive has jumper settings for SLAVE, NASTER
and SINGLE, but so far
as I can tell, none for "cable select."
The drive is a 6-pin jumper block drive. For CS, jumper pins 1&2 of
J8; leave other jumpers off.
1) How do I set this new drive for "cable
select"?
2) Will wrong BIOS settings caues the drive's existence to not be recognized?
Not usually--the drive should at least be able to identify itself to
the BIOS.
Cheers,
Chuck
-----------------Reply:
1) Actually, according to WD it's a 10-pin drive, but CS is still pins 1&2.
However, I doubt that an old 486 would recognize CS, even with an
80-conductor cable; the existing one probably works because it's treated
as a master with a 40-conductor cable.
My suggestions:
If there is a second (unused) IDE port, set the second drive as single master
(no jumpers or 4&6) and plug it into the second port.
If not, change the existing drive to dual master (pins 5&6) and set the second
drive to dual slave (3&4).
2) Unlikely, but possibly, especially since AFAIK that BIOS does not have an
auto-detect option; in any case, if the BIOS is set incorrectly you will almost
certainly have trouble when you start using that drive.
mike
26 Feb
26 Feb
7:53 a.m.
On Monday 26 February 2007 01:29, M H Stein wrote:
1) Actually, according to WD it's a 10-pin drive,
but CS is still pins
1&2. However, I doubt that an old 486 would recognize CS, even with an
80-conductor cable; the existing one probably works because it's
treated as a master with a 40-conductor cable.
The host has nothing to do with cable select working. It only really
depends on the drive and the cable. That's why it's called "cable
select" and not "host select". One drive gets set to master, and the
other to slave, based on their cable position.
Pat
--
Purdue University ITAP/RCAC --- http://www.rcac.purdue.edu/
The Computer Refuge --- http://computer-refuge.org
9:08 a.m.
On 26 Feb 2007 at 1:29, M H Stein wrote:
1) Actually, according to WD it's a 10-pin drive,
but CS is still pins 1&2.
However, I doubt that an old 486 would recognize CS, even with an
80-conductor cable; the existing one probably works because it's treated
as a master with a 40-conductor cable.
My mistake--I went to my pile of old drives and grabbed a 31200,
which is a 6-pin drive.
Cable select's pretty old--I assumed the OP knew what he was talking
about and went with it. I don't know what the OP's machine was using
for a controller (i.e. on-board, or add-on PCI or ISA, EISA or VLB--
they all existed for 486 machines).
I probably have an old Mobo with the Phoenix 1.01 BIOS on it around
here; but I don't remember if it had an "IDE drive identify" utility
on it.
Sorry for the misleading. I was one tired puppy last night. About
the only thing I can add is that look out for running older IDE and
newer IDE drives on the same cable. They don't always like each
other.
Cheers,
Chuck
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days inactive
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