Re: [cc65] dio_query_sectcount() on Atari ?

From: Oliver Schmidt <ol.sc1web.de>
Date: 2012-10-21 16:00:09
Hi Shawn,

> Hi, I will try to answer the questions to the best of my knowledge.

Thanks for the time/effort :-)

>> Just out of curiosity: Is it possible to explain to a non-Atari
>> insider in in reasonable length why such an approach doesn't work on
>> the Atari?

> [quite some explanations I could follow  (more or less)]

> Then there are the multitude of disk drives available for the Atari
> computer, all of which provided some different features, and some common
> ones.  There is the "Percom block", which would return data about the drive
> and disk, including the number of sectors.  Most advanced drives implemented
> this, and most hard drives.  However, the most popular drives, the Atari 810
> and Atari 1050 did not.

What DOS is then used to access the 810/1050? And how does that DOS
know how large they are?

> Perhaps the "best" method would be to query for the percom block, and if
> this isn't available, default to brute force method.  I don't think trying
> to figure out what DOS formatted the drive is useful in this case.

I see.

Regards,
Oliver
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Received on Sun Oct 21 16:01:18 2012

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