I believe that there is no deferral. Unless RTM is terminating a higher task, lower tasks can terminate in parallel and if it's time for an ETXR to run, the IRB will be scheduled. If that happens to interrupt a previous ETXR, so be it.
If you want to see if one interrupts another, you could also have the first wait on an ECB that never gets posted and see if any of the others run. (Assuming you don't mind a hung mother task for a test) I have not tried this. Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
