The answer is "yes". But you might want to ask the converse question: "If PSATOLD is zero, are you in SRB mode?" The answer is "not always".
There is a small case in z/OS that we call "pseudo-SRB mode" where a task was running (had PSATOLD non-zero) and the system zeroes PSATOLD and continues for a while. This can happen in memory termination situations, for example. It is not a state that your program should see. PSATOLD = 0 works for all practical purposes. Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- 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
