I’ll document what I’ve got John. The backup utility that uses floppy does some strange calls which I don’t understand at all. But, if one reads the tracks from 0 to 80 and then in turn writes them from 0 to 80, those calls are not needed.
Backup does some extra reads to determine just how many sectors to copy instead of reading the entire disk. And there are some writes that I don’t understand at all. I suspect they have something to do with the ID of the sector but I’m not sure. Without a manual I’m just guessing. My utility is a simple brute force read of every track and then the same routine in reverse. Slow, but it works. Kurt From: M100 [mailto:[email protected]] On Behalf Of John R. Hogerhuis Sent: Wednesday, August 23, 2017 9:36 AM To: [email protected] Subject: Re: [M100] Utility disk image from sector access On Wed, Aug 23, 2017 at 9:24 AM Kurt McCullum <[email protected] <mailto:[email protected]> > wrote: Success! I’ve got my utility reading AND writing TPDD2 disk images with the sector access commands. I’ve got a bit of cleanup and testing left to do and then I’ll put it in the members area. Kurt Documentation on the sector access protocol would be good too :-) It's the one dark corner of tpdd2 protocol (that we know of). -- John.
