18 Sep
2006
18 Sep
'06
5:51 p.m.
On Mon, 18 Sep 2006, Chuck Guzis wrote:
You've forgotten the original DOS 1.x 160K SS and
320K DS. I wonder if the
conservative 8-sector approach on the part of IBM/Microsoft was the
miserable track record of the original (IIRC, Shugart) drives. The one
While there
might be regional variations, I NEVER saw IBM use a
Shugart in the 5150. For the first year or so, it seems like they were
all Tandon TM100-1, and later IBM contracted to have drives made with IBM
front panels by CDC? and others.
But not Shugart. OTOH, TRS80 and Apple][ both used Shugart mechanisms
(SA400 for TRS80, SA390?? for Apple(with Apple's own board on them))
Most of the early Shugart SA400s were 35 track, instead of 40.