[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.


-- 



More information about the Coco mailing list