13 Oct
2006
13 Oct
'06
11:36 p.m.
Some ALTOS systems did.
-----Original Message-----
From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org]
On Behalf Of Marvin Johnston
Sent: Friday, October 13, 2006 8:46 PM
To: ClassicCmp
Subject: Re: Tandy 2000 Floppy Drive Replacement
On Fri, 13 Oct 2006, Fred Ciscin wrote:
The Tandy 2000 uses a 720K 5.25" drive. DSDD
96tpi.
Matsushita (Panasonic, Shugart, etc.) 465
Tandon TM100-4
Teac 55F
etc.
SOME 1.2M drive could work. They need to be jumpered to 300 RPM, "low
density" recording current, etc.
First, what other machines used a 5 1/4" 720K drive? I've been looking
through
the stash, and so far I haven't found anything.
Second, IIRC the speed and "low density" recording current are set with
jumpers.
What is the etc.?
I might add that when connecting a standard 360K drive, the light comes on
and
stays on, and the drive continues to spin when a disk is inserted. This
gives me
the impression that there may be something wrong with the disk controller
for
the Tandy 2000. The cables for the 2000 are straight-thru, so I rejumpered
the
drive to the first drive (D0 of 0-3 or D1 of 1-4.) And yes, I checked and
double
checked to make sure that pin 1 on the motherboard matches pin 1 on the
drive!
Thanks!