Grrr - !%#*^@# Kaypro!

[Fred Cisin]

On Wed, 3 Aug 2005, Allison wrote:
> >> 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).
> >
> >Which creates some complications with handling 128 byte sectors (R==0).

Sorry, TYPO.  I got sloppy and thought that you were saying the sector
size value could not be 0

> ???!  The value for R must be a valid sector number.  For floppies
> that is never zero.
There are a lot of floppies with sector numbers starting with 0.
765 can read them and write them.

> >Easily handled by 765, but not by Int13h.
> ;-)  Plays havoc with many systems not expecting it.

Yes, there were always interesting quirks in disk formats!


> that really bothered people for some reason.

One more line of code.