11 Oct
1998
11 Oct
'98
4:10 p.m.
On Sun, 11 Oct 1998, Kai Kaltenbach wrote:
This weekend I picked up this wacky little 6502
computer called the Microsci
HAVAC. Has anyone else ever seen one of these, or better yet, does anyone
have a boot disk for it?
The HAVAC has the weirdest floppy drive I've ever seen. It has a
center-mounted clamp lever, and the head positioning is done via a
spiral-grooved disc!
Well... while I am not familiar with the 'HAVAC', to find a more common
use of the "spiral grooved disc" for head positioning, just look in any
Apple II disk drive! (the early ones, not the 'DuoDiscs')
That was the standard early Shugart 5.25 inch disk positioner mechanism.
-jim
---
jimw(a)agora.rdrop.com
The Computer Garage - http://www.rdrop.com/~jimw
Computer Garage Fax - (503) 646-0174