I'd need a whole lot more than two SR R2,0's. Charles
-----Original Message----- From: IBM Mainframe Assembler List [mailto:[email protected]] On Behalf Of Robin Vowels Sent: Thursday, August 17, 2017 11:03 AM To: [email protected] Subject: Re: Source address significance for clearing MVCL From: "Charles Mills" <[email protected]> Sent: Friday, August 18, 2017 12:33 AM > Address 0 is a legal fetch address. > > The question is can I get away with not worrying about what is in the > source address register? What, for example, if it points to a > non-address or to something that happens to be fetch-protected. (Code > is 64-bit FWIW, but I doubt that matters, other than increasing the > number of potential invalid > addresses.) > > Obviously not the world's biggest deal, of course. One LHI R2,0 every > now and then is not going to kill me. Try SR R2,0 You will probably need two. --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus
