15 Sep
2013
15 Sep
'13
9:05 p.m.
On Sun, 15 Sep 2013, Jerome H. Fine wrote:
Likewise, all of the DS 8" drives that I ever owned. I used them with
[modified] TRS80 model 1, and IBM PC (with appropriate aftermarket FDCs).
The answer to that specific query will await anybody who has a specific
example.
--
Grumpy Ol' Fred cisin at xenosoft.com
If I understand SS to mean single sided and DS to
mean
double sided, then as far as I know, DEC NEVER "used"
(or perhaps you might also mean "sold" to the public) an
8" floppy drive which supported double sided until the RX33
which is a 5 1/4" drive.
Thanks.
As you've no doubt noticed, I am not familiar with DEC offerings, and
often get them wrong.
By definition, a flippy is a customized floppy media
and
does NOT quality a drive to be supporting double sided
operations.
Absolutely!
My first retail product was a jig for marking and punching index holes for
making 5.25" disks into flippies. ("Berkeley Microcomputer Flip-Jig")
And then, briefly, an 8" version for marking both sets of holes.
The question is
whether there existed anybody who made DS without the SS
sensors.
My answer is that I do not know!!! The only 8" floppy
drives (and which I agree were used with RT-11 on DEC
systems as far as most of the rest of the hardware was
concerned) that I know about which supported double
sided media ALSO supported single sided media.