Date   : Sun, 16 Oct 2005 15:32:08 +0100
From   : "David Hunt" <dm.hunt@...>
Subject: Re: Flippy Discs

Yes, flippydisks (discs!) were designed to be used as either a double
sided
disc in a double sided drive, or, if you had a "disc nibbler" you could
have
two sides, albeit manually, on a single sided drive.

All the disc nibbler does is to take the uncertainty out of cutting
another
write protect notch. I remember the craze in early 1983 of schoolmates
cutting their own index holes and notches in discs that cost £3 each.
90%
were unusable afterwards!

Dave ;)

-----Original Message-----
From: Majordomo List Manager [mailto:majordomo@...] On Behalf
Of
Ian Wolstenholme
Sent: 16 October 2005 14:28
To: bbc-micro@...
Subject: [BBC-Micro] Flippy Discs

I've found one and you can see it here:

www.BeebMaster.co.uk/Downloads/Flippy1.jpg
www.BeebMaster.co.uk/Downloads/Flippy2.jpg

but I must have remembered it wrongly as there is only one
write-protect notch.

The curious thing is that it doesn't actually seem to work if you turn
the disc over, all that happens is Disc fault 18, although the 
underneath side can be read in the nornal way using *DRIVE 2.

I've tried it in a couple of 40/80 track DS drives so maybe they were 
intended for 40T SS drives.

Best wishes,


Ian