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  3. December 2002

Re: Suggestion for a new System Request option

Mark/Dennis,

>>I believe the U1-U9 switches are set only at program start.

> That was never the case (at least since RPG II!), in the RPG sense.  You
>are able to freely manipulate those indicators, both in RPG and CL (not to
>mention Cobol.)

RPG programs read in the status of U1-U8 at the start of the program, and write
them out at the end of the program.  While the program runs they only reflect
the internal *INUx variable inside the program.

In RPG II, we used an IBM provided assembler subroutine (SUBR20) to read / write
the status of Ux switches *while* a program was running.  I believe there was a
counterpart available for the S36EE where you called an IBM supplied program
instead.

But it probably just grabs the current job switches and returns them.  You could
do the same with an API or even a CL which used RTVJOB.

Doug

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