Floppy drive pin 2 question?

[Pete Turnbull]

On Mar 10 2005, 20:33, Jules Richardson wrote:
>
> Just futzing around with this Manta board (SCSI floppy controller).
>
>  The docs I have say that pin 2 of the floppy connector is normally
an
> input to the controller from the drive, but that some drives expect
pin
> 2 to be an output to the drive from the controller (e.g. for changing
> rotation speed on a drive capable of 300 and 360rpm)
>
> That sounds wrong to me; surely most drives either don't use pin 2
for
> anything, or they expect it to be an output from the controller (to
cope
> with things like speed changes)

Yes, but I believe some drives did use pin 2 to signal the controller
in some way.  I've never (knowingly) come across one, but I'm told some
Apple drives did this.

-- 
Pete						Peter Turnbull
						Network Manager
						University of York