16 Apr
2008
16 Apr
'08
11:18 p.m.
les at frii.com wrote about the Victor 9000:
It also seems like the floppy used different speeds
(rpm) on different
tracks, running slower on the inside tracks and faster on the outside
tracks to keep the same bit density at all places on the disk. There were
more sectors on the outside tracks than the inside tracks.
As was the case on the "twiggy" drives in the Lisa (officially known
as "FileWare"), and the 400K and 800K 3.5" drives used on the Macintosh
and Apple II.
This would seem to preclude using a standard floppy
drive.
Depending on the range of speeds the Victor used, it might be possible
to replace the motor control circuit on a standard floppy drive.
Eric