[Coco] Shamus... copy protected?

[Robert Gault]

Neil Morrison wrote:
> AFAIK  DSKI$ and DSKO$ can't do this. You have to do a track write to alter
> those bits.
> 
> Neil
> 

Depends to which bits you are referring. In the case of Sands of Egypt, 
you just write out a sector using the standard command code $A0 but set 
the delete address mark bit. The code thus becomes $A1. It would be easy 
to patch your Coco DOS before a DSKO$ to delete a DAM for one sector.