8 Nov
2001
8 Nov
'01
10:13 a.m.
> Micropolis was one of the only ones to use a
helical lead screw positioner
> for a 5.25" floppy. VERY SLOW. They also made a 100TPI (not 96) drive.
On Thu, 8 Nov 2001, Eric Chomko wrote:
Wasn't Micropolis' drive a 77 track thing?
It was, indeed rated at 77 track, but, ... it could go slightly past, and
some would go as far as 80.
BTW, The Tandon TM100-4 was 96TPI, but the TM100-4M (for
"Micropolis"?) was 100 TPI.
Starting with
the MPI B51, most drives went to a split band positioner.
In addition to the spiral groove positioner, the SA400 was 35 track,
whereas all others that followed were 40 track.
I have both SA400 and MPI B51s.
They are compatible.