On 12/16/2015 07:57 AM, Paul Koning wrote:
IBM standard labels are older than ANSI. Then again, IBM (in OS/360 at least) had something they called "ANSI label" that were not actually ANSI at all. They used "8 bit ASCII" which was a bizarre code created from standard 7 bit ASCII by moving one or two of the bits (bit 6 to bit 7? I don't remember).
Then there's 6 bit ASCII/USASCII. I was trying to avoid using jargon that some would not understand. I'm quite familiar with IBM EBCDIC "SL" tape labels.
My point was that the CMS dumpfile tape isn't even a standard labeled tape. It just starts out with the first block of data and ends with a double filemark. No standard labels anywhere. Any non-CMS system would not know what the heck the thing was.
--Chuck
