stepping machanism of Apple Disk ][ drive (was Re: Heatkit 5 1/4 floppies)

From: Ward D. Griffiths III <gram_at_cnct.com>
Date: Thu Apr 8 23:37:30 1999

On Thu, 8 Apr 1999 allisonp_at_world.std.com wrote:

> Actually there are two points. One is track 000 and the other is the
> innermost (for sa400 35-40 tracks later). Only track 000 was sensored
> save for apple didn't use that either. Apple cut the interface to the
> minimim number of wires and signals possible and made up the difference
> with software, rather clever in my mind.

During the design phase, Woz had more time than money, chips cost money
and software only cost time. Remember that he _wanted_ to use the 8080
but the 6502 cost only a tenth the price. (Imagine what the Apple
might have been like with a decent CPU from the start).
--
Ward Griffiths
"the timid die just like the daring; and if you don't take the plunge then 
you'll just take the fall"                                Michael Longcor
Received on Thu Apr 08 1999 - 23:37:30 BST

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