[Coco] Re: virtual disk formats (was: Sock Master Demos)

[John E. Malmberg]

Willard Goosey wrote:
> 
> DMK was created, AFAIK, for the model III/4 emulators.  It also stores
> the inter-sector-gap headers and data.  This was necessary because
> TRS-DOS insists on storing file system data there. :-(  For the CoCo,
> you'd only need it, I would think, for really perverse copy-protected
> disks.

According to the technical manuals for the TRS-80, the only thing 
special is that they set the "DAM" or Deleted Address Mark on the 
sectors of the track that the directory is on.

That is enough to prevent the bios routines of a PC from reading the 
floppies.

Later versions of LDOS apparently do not have that limitation.

-John
wb8tyw at qsl.net
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