29 Nov
2001
29 Nov
'01
1:44 a.m.
Though there are many "Little Board" products from Ampro, the ones I have,
which
are the originals from back in '83 or so, will produce a prompt if you (1) have
no floppy attached, or (2) don't have a diskette in it. If it's not producing
that prompt, I'd say you need to look elsewhere than the floppy drive.
Aside from single-sided drives, I've never encountered a 48TPI drive that this
machine wouldn't boot once it's jumpered for DS0.
Nevertheless, if it's not producing the prompt, something's seriously wrong.
There aren't many parts that could be broken, but perhaps you should look into
which one it might be. My experience has been that if it doesn't produce that
prompt, it won't boot under any circumstances.
Dick
----- Original Message -----
From: "Gene Buckle" <geneb(a)deltasoft.com>
To: <classiccmp(a)classiccmp.org>
Sent: Thursday, November 29, 2001 8:58 AM
Subject: Re: Ampro Littleboard problems..
On Wed, 28 Nov
2001, Gene Buckle wrote:
Don, the number on the back of the drive really is FD-54B. As far as
termination, I don't know. There is no place for what I would call a
"traditional" floppy termination pack. There is a SIP resistor soldered
into the board right ahead of the data connector. I don't have the drive
in front of me now, but I don't recall seeing "SM" as being a jumper
position. I do recall the "HS" labelling however.
I don't recall anything marked "PM" at all.
Thanks!
g.
I've got a Littleboard I'm tring to bring
up. When I feed it a disk,
and power it up, it will select the drive, spin it and shut down after
about 3 to 5 seconds. I never hear a head step. Nothing shows up on the
serial port (port a, 9600). The drive I'm using is a Teac FD-54B-02-U
and the two jumpers are set to DS0 and IU.
I presume that is a typo and it really is an FD-55B. Is it terminated?
I assume a straight cable since it is selected. The FD-55s that I use
are jumpered DS0 (for straight cable), HS, IU, and SM on the two main
jumper headers. PM is also jumpered on its own header.