On Wed, 25 Mar 2009 18:42:48 -0400 Bill Fairchild <[email protected]> wrote:
:>From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Thompson, Steve :>Sent: Wednesday, March 25, 2009 6:33 PM :>To: [email protected] :>Subject: Re: SVC 50 (0A32) :>>I believe its unintended use is for putting entries into the system ^^^^^^^^^^ :>trace. :>>So, depending on what you want to note, you stick values into R15-R1 and :>then invoke SVC 50. :>So what does SVC FLIH do when you execute SVC 50 while disabled holding a lock and in SRB mode? I never tried that, but it doesn't sound doable. :>I added entries to system trace once by loading almost all 16 registers with useful stuff and then doing the TRACE instruction. :>I would bet the 1971 FE handbook had it right; i.e., a NOP. But why you would need an SVC to do that is beyond me. No need to be so serious. -- Binyamin Dissen <[email protected]> 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 [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
