On Fri, Feb 7, 2025 at 11:06 AM, Fish Fish wrote:
AFAIK all IBM operating systems do this
Except for MUSIC/SP, none of the vintage systems we have implement handshaking. If I am not mistaken, George Shedlock added handshaking to DOS/VS R34, and Bob Polmanter did so for MVS 3.8J. To my knowledge, there is no handshaking in DOS/360, MVT, OS/VS1, and MTS. A work around for these systems (when run under VM) is to use dedicated printers (and punches), something easy to do when VM runs under Hercules, maybe not that much on a real system. :-)
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Cheers,
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Rene FERLAND, Montreal
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P.S. -- From the manual "Introduction to DOS/VS Release 34" we learn, on page 124, that handshaking was provided by a licensed product called "Advanced Functions", which explains why it is not in the operating system we get after a sysgen from the tapes we have.
Ren¨¦ Ferland