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[i]I'm starting here with the tape QK7992H from NASA in the lot of 4. I suspect that it's the best as it's probably the original. At any rate, count this as a test only — there appears to be only one uncorrected parity error in block 130. Note that any text in these is EBCDIC, not ASCII. The data structure appears to be fixed length records of 83 (total) bytes, each record starting off with its number in EBCDIC. Initial records are entirely in text; subsequent records are binary data. For example, the first physical block (translated from EBCDIC to ASCII) is... [Code omitted] More discovery — the University of Arizona tapes (3 of them) turn out to be 7 track, not 9, unlike the NASA-provided tape. I've got to see if I can discover what mainframe the UofA science department was using before I can make sense of them.[/i]
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