Re: Reference for layout of ProDOS and DOS 3.3. sector ordering?

[Andy McFadden <fadden@fadden.com>]

schmidtd <schmidtd@my-deja.com> wrote:
> I'm looking for a reference for ProDOS and DOS 3.3 sector ordering for
> disk images.  Something that talks about which sectors (DOS) or blocks
> (ProDOS) go where in the image.  I haven't come across anything yet.
> What am I missing?

A DOS-ordered image has 256-byte track 0 sector 0, followed by t0s1,
then t0s2, and so on.

A ProDOS ordered image has 512-byte block 0, followed by block 1, and so on.

Mapping DOS-ordered images to ProDOS blocks and vice-versa is left as an
exercise for the reader. :-)  For example, block 0 is t0s0 and t0s2.  There's
a table in Beneath Apple ProDOS.

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