Re: More on 6809 board.

[Michael J. Mahon <mjmahon@aol.com>]

Alex Freed <alex_news@alexfreed.com> wrote:
> On 7/20/2012 7:12 PM, Michael J. Mahon wrote:
>> This is what a .sdk archive solves completely.
>> 
>> No matter what the sector order or file system, ShrinkIt will write a 5.25"
>> diskette identical to the one it shrank. (I'm talking about 8-bit
>> ShrinkIt.)
> 
> Can you point to where to get it and how to use?
> 
> Also can somebody explain the .DO/.PO thing to me? I looked at the
> Beneath DOS and Beneath ProDOS and they claim that both DOS 3.3 and
> ProDOS do not have any physical interleave but have (different) logical
> interleave. So the physical sector are consecutive. Fine. Then why 2
> different formats? If physical data is written sequentially then the OS
> can apply whatever physical to logical translation it wants, right?
> 
> -Alex.

Because so-called DOS-ordered images are written in DOS *logical* sector
order, not physical sector order. 

-michael - NadaNet 3.1 and AppleCrate II: http://home.comcast.net/~mjmahon