> I don't see any obvious Millicode support for the AR address, so I query - > when a PC defined with an ARR is executed, does it cause an interrupt which > then issues IEAARR under the covers? That a FRR would be faster?
ARR is a software concept, not machine architecture. Nothing special happens with regard to an ARR when the PC instruction is executed. RTM2 processing examines the linkage stack to look for ARRs. Jim Mulder z/OS System Test IBM Corp. Poughkeepsie, NY ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
