8 Jun
2007
8 Jun
'07
3:08 p.m.
On Thu, 7 Jun 2007, Chuck Guzis wrote:
Ah yes, the PF10. Now that was a strange drive. There's one PCB inside
that contains the control processor (6303 IIRC), EPROM, RAM, disk
controller chip _and_ the head amplifier, stepper drivers, etc. There's
no separate drive logic board.
And yes, it's 67.5 TPI.
-tony
...and there were also the 300 RPM 40 cylinder
3.5" DS2D drives at
67.5 tpi, used on a few CP/M systems as well as many inexpensive word
processors.
used by the Epson Geneva/PX8