Mark McDougall wrote:
Michael J. Mahon wrote:I also don't understand how any copy protection beyond simple .nib images is supposed to work. All the discussion about accurate simulation of the Woz Disk ][ controller seems a bit beside the point as regards copy protection schemes.Granted, but that's not a failing of the implementation itself, but rather due to the fact that there's no universal scheme for encoding protected images in any form outside an Apple ][ floppy disk, is it not?Surely an accurate simulation is one step towards enabling the possibility of running copy-protected images - with more work on the 'back end' of course?
Of course, but any increase in "accuracy" of emulation will require changes to the Woz machine emulation as the image representation is designed. I'm wondering if successive reads to the "disk controller" data latch will reveal data shifting in dynamically, for example, and if the data pointer continues to "rotate" virtually even when the "drive" is not being read. (This would suggest the need for a virtual "speed adjustment" as well.) -michael NadaNet file server for Apple II computers! Home page: http://members.aol.com/MJMahon/ "The wastebasket is our most important design tool--and it's seriously underused."