On Wed, May 29, 2013 9:28 am, email@example.com wrote: > If I understand correctly the specs of the G64 format, it should be > flexible enough to accommodate any (?) GCR based disk image data, even if > it is signed as "GCR-1541". If that is correct then the question is - has > anyone seen this being put into some use? Like GCR images of 1571 disks? > Or Apple ][ (?) > -- It's never been used for anything except single-sided Commodore disks, so anything else would be non-standard. It would make much more sense to extend the header and make it G71 for 168-track double-sided disks to prevent confusion. However, there are less 1571 disks that have copy protection and need GCR images than you can count on one hand, that I know of. As for Apple, the specs aren't made for that. Technically, their GCR is different than CBM- there is only one density, and the way the data is constructed on the disk vs. what is read is odd (no sync marks per se, every byte is a sync) AND they can have quarter-tracks. To my knowledge, there has never been any project to preserve original Apple floppies. - Pete Rittwage C64 Preservation Project Message was sent through the cbm-hackers mailing listReceived on 2013-05-29 17:00:06
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