[sdiy] Scavenging the electronics graveyard

[m.bareille at free.fr]

Hello,


> Would of course require an adapted motor control to adjust the rotation
> to track length.

May be a Mac floppy  will be more adapted ... if i remind well they had a
variable speed R/W mechanism , vs DOS or Atari one who had a constant speed...

>
> Or a polyphonic machine, one drive per key and 128 velocity settings...
>
> Seeking time will probably forbid any track movement, though, so it's
> still possible to have up to 164 instruments on a disk. About 16kB seem
> to be the upper (digital) limit for MFM. But then, the outmost track is
> around 55cm long (3.5"*2.54*2*PI) -- at standard compact cassette speed
> instead of 300rpm that's almost 12 seconds.


To use and HD floppy reader (1.44MB) instead of a 720k one will twice the
storage time . And what's about old ZIP or equiv. cardriges? They were quite
similar to the folppy disk no? Just a little bit bigger 128MB...


Cheers,

Marc B.