My post was describing the net affect, that only a key 0 program can access bytes x'800'-x'FFF' of the PSA.
As Jim Mulder privately reminded me, architecturally, all of page 0 is fetch-protected key 0 storage, but the "fetch protection override" is applied to bytes 0-x'7FF' to all programs of any key to read the first 2K. 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
