13 Jun
2005
13 Jun
'05
5:40 p.m.
Subject: Re: Wild-hair floppy drive question
From: "Randy McLaughlin" <cctalk at randy482.com>
Date: Mon, 13 Jun 2005 18:39:14 -0500
To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at
classiccmp.org>
From: "Doc Shipley" <doc at mdrconsult.com>
Sent: Monday, June 13, 2005 6:33 PM
You would think they would have included a jumper to select the speed and
ignore pin 2.
The best thing would be to cut the trace and ground it so the signal doesn't
go back to the controller. As a matter of fact cutting pin 34 often helps.
Actually on some varients the jumper does exactly that, with a
pair to select if the "input" are high or low another only has a
single jumper to select low with a pull up. I have five
different FD55GFx flavors with boards that are markedly
differnt. Most annoying. But they have proven to be reliable.
Allison
Randy McLaughlin wrote:
<snip>
To make
the Teac 1.2mb drive act like a QD drive there are two options:
Jumper I on, LG off, low on pin 2 of the 34 pin connector or Jumper I on,
LG on, high on pin 2 of the 34 pin connector.
Thanks. I think it was the flip-flop on pin 2 that was hammering me.
I'm suddenly in the middle of a Tivoli TSM migration, but when things
cool off abit I'll try this.
Doc