8 May
2016
8 May
'16
2:23 p.m.
On 05/08/2016 02:02 PM, Paul Berger wrote:
Are you sure about the SA-400 being used in 5150s?
All the ones I
ever saw where Tandon TM-100s which look very much like them and I
saw lots as a support person in an IBM lab in the early 80s. They
have the same sort of motor setup to turn the diskette, but use a
different head positioner. The TM-100s used a stepper with a taut
band positioner.
Quite. I purchased my 64K 5150 from Computerland in San Jose (I
probably still have the receipt) and included an MDA, a floppy
controller, the SA-400, as well as PCDOS 1.1, MASM 1.0 and the techref.
I didn't buy a monitor because I already had an OEM kit monitor that
was probably better than the 5151. I later added a Quadram Quadboard
with 256KB of memory--and then moved to PCDOS 2.1 and worked out a
simple interface to a WD1000 controller with a Shugart SA-1000 hard
drive, giving me 4MB of real hard disk.
When I was on a floppy-only system, I added a Micropolis 1115-VI second
drive. An odd beast with buffered seek.
So, yes, I'm quite sure.
--Chuck