There's nothing quite like empirical evidence. Set R13 to zero and POST.a full word somewhere safe. See if you get a S0C4 inside IBM's code on an instruction involving R13.
Bill Fairchild Rocket Software -----Original Message----- From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On Behalf Of Charles Mills Sent: Friday, August 13, 2010 7:22 AM To: IBM-MAIN@bama.ua.edu Subject: Does POST require a save area? Does POST require that R13 point to a save area? Does the answer change if LINKAGE=BRANCH or SYSTEM? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
