IBM CMS dumpfile idiocy

Chuck Guzis cclist at
Tue Dec 15 21:10:34 CST 2015

On 12/15/2015 01:48 PM, Dave Wade wrote:
> What I meant was are they still on 9-track, or some kind of
> tape-in-a-file disk? IBM tapes are usually written to AWS format
> files not the formats (.TAP ?) used by SIMH... Some source to extract
> some versions of these from AWS files (and windows executables) are
> in this ZIP file:-

Came right off a 1600 cpi tape, identified as a CMS dumpfile.

What really strikes me as odd, is that ANSI/IBM tape labels were pretty 
much the standard rule of thumb then; why the heck did IBM invent 
something new and obscure?


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