> MFM is the system used for encoding sector data on the disk. It uses > five bits for every nybble Read: MFM uses two disk bits for each data bit. See http://www.cs.tut.fi/~albert/Dev/ -> C1581 Basically a 1-bit is added between bits if they both are 0, otherwise a 0-bit is added. A pattern which can not occur in validly encoded MFM ($4489) is used as a sync mark. > the physical media, but since it uses a different directory and file > structure the standard MS-DOS commands such as DIR and COPY can't There's also the problem with 9 (PC) vs 10 (1581) sectors per track (and perhaps different sector headers also). -Pasi -- "It's not justice you are after, Major, it's blood." -- Sinclair to Lianna Kemmer in Babylon 5:"Survivors" - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail cbm-hackers-request@dot.tcm.hut.fi.
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