Grrr - !%#*^@# Kaypro!

[Allison]

>
>Subject: Re: Grrr - !%#*^@# Kaypro!
>   From: Dave Dunfield <dave04a at dunfield.com>
>   Date: Wed, 03 Aug 2005 18:04:39 -0400
>     To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
>
>
>>> Tried ImageDisk on some Kaypro disks this morning...
>>> Buggers recorded side1 as additional sectors of side0.
>>> The different set of sector numbers didn't bother
>>> ImageDisk, but it had a bit of a tantrum with the Head
>>> ids which didn't match the physical head selection.
>>
>>Quite common :-(
>>765 insists on accurate sector headers;
>>WD 179x can ignore the head # field in the sector headers.
>>The Kaypro won't even mind reading/writing a disk,
>>if you FORMAT it with a 765 using valid sector headers!
>
>Actually, the 765 handles it fine ... my original software
>stored only the physical head indicator per track - now I
>can store a map of indicators for each sector, and it
>reads/formats/writes Kaypro (and Zorba which does the same
>thing) disks without issue.
>
>You do have to tell the 765 what "head" you are reading in
>the ID field, but fortunately you can do this imdependantly
>of the physical head select - I determine all the sector
>headers in the analysis phase, so I "know" which heads to
>request now...

Dave, your on track.  The CHRN vlaues do not have to corrospond
to actual head or cylinder.  They do not even have to be in order
on the media!   The only limits on them are R must be 1 or greater
(less than 255).

My favorite format was sectors 1- 9 (512 DD) on side one and 
side two was 10-19 with H always set to 0. 



Allison