If your program can be called by a program that you don't control, and that doesn't document that it provides something more, you have to assume that you re only provided a 72-byte save area.
There is no code that a program can provide in the first word of a save area that could describe the save area. That is because the first word is defined as for the use of language products. -- Tom Marchant On Fri, 21 Jan 2022 09:32:07 -0500, Dave Clark <dlcl...@winsupplyinc.com> wrote: >My program is being >called by REXX and I'm not aware of any documentation stating what kind of >register save area REXX provides. That is why I asked and was wondering >if there is, perhaps, a code in the first word of the save area that >indicated the format used -- and, in the absences of such a code, the >72-byte savearea is all there is.
