Andy Chandler wrote: > > will cope with all but one SAM disk I've seen so far :-) > > I'm betting that was another Mr Owen creation ;-)
It's actually Chris Pile's original Defender disk, which does some gap-level checking as part of the copy protection. The gap information isn't stored as part of the disk image, as it's almost never needed, and would more than double the image size. SimCoupe actually fakes the raw track data from information it knows about the sectors on the current track, so it looks pretty authentic in programs like SAM DICE. Using a tagged disk format it would be possible to include a READ_TRACK dump for just the one track needed, to hold the information Defender expects. Due to the controller bug, it wouldn't be easy to write back to a real disk using a generic image writer (unless another tag held formatting hints!). The track data would also be enough for SimCoupe to run the protected Defender image too, which would be an added bonus ;-) Si
