Re: HD floppy on a IIgs?

[dempson@actrix.gen.nz (David Empson)]

Wayne Stewart <waynejstewart@gmail.com> wrote:

> What of Applied Engineerings 1.6 mb floppy drive that you connected to
> the IIgs drive port?

It used GCR coding rather than MFM, which made it compatible with the
IWM.

Not sure how it solved the timing issues with twice as many bits per
track. I'd be surprised if an unaccelerated IIgs was fast enough to cope
with a disk byte being delivered every 8 microseconds, though it could
keep up with 16 microseconds per byte with the 800K drive.

Easiest solution would have been to halve the rotation speed of the
drive.

I doubt they could have got away with double the number of tracks but
the same number of bits per track.

-- 
David Empson
dempson@actrix.gen.nz