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From: v089pfrb@ubvmsd.cc.buffalo.edu (Jeffrey C Murphy)
Newsgroups: comp.sys.amiga.tech
Subject: MFM/IBM Decode
Message-ID: <49724@eerie.acsu.Buffalo.EDU>
Date: 7 Dec 90 09:51:58 GMT
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 I have several old disks which were formatted on the C1581 drive. I have
noted that when using RawCopy's trackread option and then selecting MFM
decode and IBM decode respectively, the tracks on the disk are decoded. 
Question: 
       1) I know about decoding MFM formats, but what is the IBM decode
algorithm?
       2) Do you have to bypass DOS in order to read a foriegn format?
       3) Amiga Disk Drives Inside & Out (Abacus) seems to use many
absolute addresses in its programming examples, why?

Thanx in advance (resp. by email is preferable but not necessary)

  Jeff M.