It is not clear to me from the manual if PLO does a trial instruction verifying that the storage areas can be changes.
For example, if PLO.CSDST is issued, are the possible results (assuming that nothing screws around with the page tables): 1. 0C4 on operand1 2. Operand1 stored, 0c4 on operand2 3. Operand1 & operand2 stored, 0c4 on operand3 ? Or will nothing be stored if any would fail? -- Binyamin Dissen <bdis...@dissensoftware.com> http://www.dissensoftware.com Director, Dissen Software, Bar & Grill - Israel Should you use the mailblocks package and expect a response from me, you should preauthorize the dissensoftware.com domain. I very rarely bother responding to challenge/response systems, especially those from irresponsible companies. ---------------------------------------------------------------------- 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