[sebhc] Hard-sectored disks

[Glenn Roberts]

i'm not an apple expert but here's the source that says the Apple II used 16 
"hard" sectored disks:

http://retrotechnology.com/herbs_stuff/drive.html#facts

it also (correctly) says that Heath & Northstar used 10 sectored disks.  Of 
course, just because it's on somebody's blog doesn't make it necessarily 
true!...

----- Original Message ----- 
From: "Lee Hart" <leeahart at earthlink.net>
To: <sebhc at sebhc.org>
Sent: Thursday, February 08, 2007 11:16 PM
Subject: Re: [sebhc] Hard-sectored disks


> From: Glenn Roberts
>>the Apple II used 16 hole hard sectored disks.  I presume it would at 
>>least
>>be a major undertaking to get these to work on Heath hard sectored setups.
>>At a minimum it would seem to require a rewrite of the H17 ROM.
>
> It did? I always thought Apple II disks were soft sector, though the 
> recorded data format was unusual (not FM or MFM, but rather pulse width 
> encoding).
>
> Northstar computers used 16-hole hard sectored disks.
>
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