Branch entry WTO has existed only since MVS/ESA SP4.1.0 (around 1990). The IOS processing to schedule an IRB to the Region Control Task to issue DASD ERP messages predates that considerably.
Jim Mulder z/OS Diagnosis, Design, Development, Test IBM Corp. Poughkeepsie NY > > IOS runs in a combination of DIE and SRB code, except for error > recovery routines running in an SIRB. So if it needs to write an > error messages rather than just return an error could, it needs an > RB to do a WTO. I don't know the exact process, and I suspect that > it has changed since the last IOS logic manual IBM made available tous peons. > > Why does it need an RB to do a WTO? Branch entry WTO supports SRB > mode. (Or are you using RB as a cute short form for xRB, where x could > be S or P or SV or SI?) ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
