100TPI floppy disk drives
M H Stein
dm561 at torfree.net
Wed Oct 10 12:24:36 CDT 2007
Date: Tue, 9 Oct 2007 20:21:53 -0400
From: "Andrew Lynch" <lynchaj at yahoo.com>
Subject: 100TPI floppy disk drives
I recently bought this S-100 chassis with four Vector Graphic boards. Based
on what I gathered from searches, the Vector Graphic system uses 100TPI
floppy disk drives.
Will anyone confirm which disk drives are compatible with the Vector Graphic
floppy disk controller? I believe those 100TPI drives such as the Tandon
TM-100-4M. There are probably others from Micropolis as well so if you know
of some please include them in a response.
In addition, I would like to extend the Catweasel hard sector decoder
software concept to the Vector Graphic 16 sector 5.25" hard sector floppy
disks. I have written Catweasel floppy disk decoder software for the
NorthStar which now seems to be working pretty good. Also, the Catweasel
Heath project is coming along although not as far along as the Catweasel
NorthStar software. It can make images of Heath SSSD floppy disks.
Does anyone have some 100TPI floppy disk drives they would be willing to
sell? I think I will need at least two or three drives total so even if you
have only a single drive you can part with, I would appreciate an offer.
FWIW, my Vector MZ has a pair of Micropolis 1016-II drives which AFAIK
are SS 77Trk 100TPI drives, with a Vector Graphics Disk Controller
marked FD CONTROL B MICROPOLIS.
However, I believe Vector Graphic used different drives in some later
models, even soft sector in some if I'm not mistaken.
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