You could also try STFLE FUNCTION
Then check the first word: - Bits (0-7) 0 - N3 INSTRUCTIONS AVAILABLE 1 - Z/ARCH MODE INSTALLED 2 - Z/ARCH MODE ACTIVE 3 - DAT ENHANCEMENT INSTALLED 4 - IDTE DOES CLEARING (ASCE) 6 - ASN AND LX REUSE INSTALLED 7 - STFLE AVAILABLE -----Original Message----- From: IBM Mainframe Assembler List [mailto:ASSEMBLER-LIST@LISTSERV.UGA.EDU] On Behalf Of John McKown Sent: Thursday, June 13, 2013 12:08 PM To: ASSEMBLER-LIST@LISTSERV.UGA.EDU Subject: Re: 64 bit question Why not just try to get memory above the line, using IARST64 REQUEST=GET, and check the return code? http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/IEA2A9B0/4.1 Or, you might check the CVTV64 bit in the CVTOSLV2 flag field of the CVT (CVT macro), after checking that FLCARCH is non-zero in the PSA (IHAPSA macro). USING PSA,0 CLI FLCARCH,0 BZ NO64BIT L 1,FLCCVT DROP 0 USING CVT,1 TM CVTOSLV2,CVTV64 BZ NO64BIT ... IHAPSA DSECT=YES,LIST=YES CVT DSECT=YES,LIST=YES On Thu, Jun 13, 2013 at 11:45 AM, Scott Ford <scott_j_f...@yahoo.com> wrote: > All, > > After reading through the Extended Addressability Guide/ref I have a > question.. > How do I tell if a machine will support 64 bit storage above the "bar" > ? I mean like a Assembler macro query ..I want to use 64bit storage > but I don't know to tell programmatically what the allocation is for the > system. > > Regards, > > Scott ford > www.identityforge.com > from my IPAD > > 'Infinite wisdom through infinite means' > -- This is a test of the Emergency Broadcast System. If this had been an actual emergency, do you really think we'd stick around to tell you? Maranatha! <>< John McKown
