Paul
It's not at all clear to me how you perform "screen related" operations from a load module executed with JCL.
It's very clear for anyone who knows how, for example, the VTAM API works! Here's some holiday reading for you covering all you need to know. z/OS Communications Server SNA Programming http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/F1A1D930/ Pay particular attention to Chapter 11, "Programming for the IBM 3270 Information Display System" which describes how VTAM performs "protocol conversion" from pre-SNA local 3270 channel programming to presenting the appearance of an SNA secondary LU implementing LU type 0 with the 3270 data stream, which is described in the following manual: 3174 Establishment Controller Functional Description http://publibfp.boulder.ibm.com/cgi-bin/bookmgr/BOOKS/cn7a7003/ And what's more, you don't even need to use any USS! That's what the SIMLOGON API call is all about.[1] -
I think you have two different questions here.
Incidentally, what are the "two different questions" you have in mind? - [1] Actually, you could simply use a flavour of the OPNDST API call but that is discouraged since, in session setup, so much can go wrong and using SIMLOGON provides more granularity. - Chris Mason ----- Original Message ----- From: "Paul Gilmartin" <[email protected]> To: <[email protected]> Sent: Monday, December 26, 2011 7:22 PM Subject: Re: Display related operations in assembler.
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I think you have two different questions here. It's not at all clear to me how you perform "screen related" operations from a load module executed with JCL. -- gil
