Re: WANTED: Information on Apple II copy protection

[mkelsey@eecs.wsu.edu (Michael Kelsey - Systems Staff)]

In article <19980312145701.JAA11523@ladder01.news.aol.com>,
	petscii@aol.com (PetScii) writes:

> I've always been interested in the "dark secrets" of protecting disks!

I would like to know if anyone knows the copy-protection of the following
programs.  These were the only programs in my elaborate collection that
I plainly-and-simply could not duplicate (aside from memory capture using
CTRL-CA-RESET).

	Shamus - uses the stack to protect itself when decoding.
		 looks to only use about half of the disk.
		 appears to have two short sectors separated by a large
		 gap of invalid bytes.  Captured by waiting for a
 		 total load and CTRL-CA-RESET.  Never could discern
		 how to duplicate original.

	Frogger - Assumed to use spiral-tracking, as denoted by the
		  SpiraDisc(TM) header.  But which tracks are being
		  used?  Half-tracks?  Quarter-Tracks?  Captured the
		  same as Shamus.  Never able to duplicate original.

	Hubbard Star Gazer - looks at first to use a standard protected
		  DOS 3.3 format, but if copied in such a manner, all
		  sector data appears scrambled.  Broke the "DOS" when
		  loading by ejecting the disk, causing an I/O error,
		  but a manual read of sectors with its RWTS only caused
		  read errors.  Naturally, this one I was never able to
		  get duplicated by any means.

	Thanks!  I haven't found any documentation on how to program
Copy II Plus 6.5 - 9.1, EDD 4.9, or Locksmith 5.0/6.0 to duplicate any
of the above.  It's almost as though nobody ever figured them out!? 
	
-- 
	-/\/\ichael-

replyto: mkelsey at eecs.wsu.edu