17 Jun
2006
17 Jun
'06
9:23 p.m.
From: "Chuck Guzis" <cclist at
sydex.com>
Reply-To: "General Discussion: On-Topic and Off-Topic
Posts"<cctalk at classiccmp.org>
To: cctalk at classiccmp.org
Subject: Re: Floppy stepping problem
Date: Sat, 17 Jun 2006 09:51:51 -0700
On 6/17/2006 at 9:25 AM dwight elvey wrote:
Hi Chuck
The machine was working fine with a 1.2M drive. It is a Dell box with
a 486SX but that controller couldn't handle FM so I'm using a combination
IDE and floppy controller that has a GoldStar chip on it. It seems that
most of the GoldStar chips handle FM OK. ( and yes, I changed the jumper
on the mother board to use the external controller ).
The 360K floppy I have, only has the drive select
jumpers. I've tried
changing the DBT and using Int 13 but it is still not working. I guess
I'll
just have to live with it. It is working, it is
just that when the 1.44M
goes>to another track, I have to recal the 360K drive...
Let's see if we can solve this.
I'm going to go out on a limb here and ask you to carefully check your
cable that you're using. If you can, put another 1.44MB drive in place of
the 360K and see if it behaves similarly. If it does, check your cable; if
not, you might well have a wonky 360K drive.
What vintage PeeCee are you using? This isn't one of the more modern ones
with support for only a single drive built onto the mobo, is it?
As I stated, it is using a combination IDE/Floppy card. The card has been
checked out to work fine with both the 1.44M and 1.2M at the same time. I
did this early on.
Does your 360K drive have the terminator installed? If not, have you tried
it with the terminator? (you don't need to use the standard 150 ohm ones;
1K should be good enough).
The 1.44M has some termination on it. I don't think the 360K needs
additional
termination. I do have a resistor pack but it makes no difference if I
install it.
Dwight
Cheers,
Chuck