[Coco] Run program by typing DOS
Steven Hirsch
snhirsch at gmail.com
Thu Mar 12 14:46:23 EDT 2009
On Thu, 12 Mar 2009, Darren A wrote:
> On 3/12/09, Steven Hirsch wrote:
>>
>> I'm a little confused about those .dsk files. Are these supposed to be
>> physical images of CoCo floppy? When I look at the files, I see basically
>> garbage: pages full of 0ffh and a few blocks of 4eh sprinkled in between.
>>
> --
>
> Those sound like disk image files that use the DMK format. The blocks
> of $FF are unused sectors (formatting initializes sector data to $FF).
> The $4E bytes are used in gaps between the sector data and ID fields.
> Following a run of $4E bytes you should see a run of $00 bytes, then
> three bytes of $A1 and finally an $FE or $FB.
Is there a tool I can use to turn them into proper DSK images? Also, it
would seem that they should not be using an extension of 'DSK' if that'
not what they are.
--
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