On Tue, 8 Jun 2004, Dave Dunfield wrote: I don't know of any. It would be a cool feature, and not too difficult to implement. A cracker named Saltine made a very nice binary disk image program back in the day called SST (Saltine's Super Transfer...or something like that) which takes a binary image of a disk and makes a file of it that can then be compressed and transfered over modem lines (or in today's case the Internet). I'm not sure if SST did half- or quarter-tracks, but I'd bet that it did have options to check for those. The timing critical technique was called synchronization, whereby the alignment of sectors from one track to another was checked (a very simplistic description). When I ever get some free time again I'll take a look at the program and refresh myself with what its capabilities are. The next step would then be to write a disk drive emulator that can emulate the hardware of the Apple Disk ][ controller so that it can properly boot such disks. The other option is to find someone who can crack the software in question so that it can be put onto unprotected disks and then transferred to the PC to run under the emulator. I can make my services available to do that for a reasonable fee :) -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]