Re: 64 bit question
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
Re: 64 bit question
Not sure I have a machine I can try that on. Looks like a trap. -Original Message- From: IBM Mainframe Assembler List [mailto:ASSEMBLER-LIST@LISTSERV.UGA.EDU] On Behalf Of John McKown Sent: Thursday, June 13, 2013 12:19 PM To: ASSEMBLER-LIST@LISTSERV.UGA.EDU Subject: Re: 64 bit question Hum, I really find bit 7 amusing. What does STFLE set that bit to when STFLE is not available. No, wait, what? On Thu, Jun 13, 2013 at 12:14 PM, Randy Schafer randy.schafer.a...@statefarm.com wrote: 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 -- 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
Re: which instructions should I use?
I probably would have used: CLI 0(1,R3),X'00' JNE ... No literal. -Original Message- From: IBM Mainframe Assembler List [mailto:ASSEMBLER-LIST@LISTSERV.UGA.EDU] On Behalf Of Frank Swarbrick Sent: Friday, August 24, 2012 1:48 PM To: ASSEMBLER-LIST@LISTSERV.UGA.EDU Subject: which instructions should I use? Assembler newbie here; please be gentle. Given the following: - r7 points to the input parm list - r2 indexes the input parm list I want to see if the first byte of the parm I am interested in is x'00'. l r3,0(r2,r7) r3 - current parm I can do this: clc 0(1,r3),=x'00' jne delimited_string Or I can do this: llc r9,0(,r3)r9 = parm byte 0 clijne r9,x'00',delimited_string How do I decide which is better? The second one uses more modern instructions, and 1 extra byte, but no literal. Frank
Re: which instructions should I use?
Oops. I meant: CLI 0(R3),X'00' -Original Message- From: Randy Schafer Sent: Friday, August 24, 2012 1:54 PM To: 'IBM Mainframe Assembler List' Subject: RE: which instructions should I use? I probably would have used: CLI 0(1,R3),X'00' JNE ... No literal. -Original Message- From: IBM Mainframe Assembler List [mailto:ASSEMBLER-LIST@LISTSERV.UGA.EDU] On Behalf Of Frank Swarbrick Sent: Friday, August 24, 2012 1:48 PM To: ASSEMBLER-LIST@LISTSERV.UGA.EDU Subject: which instructions should I use? Assembler newbie here; please be gentle. Given the following: - r7 points to the input parm list - r2 indexes the input parm list I want to see if the first byte of the parm I am interested in is x'00'. l r3,0(r2,r7) r3 - current parm I can do this: clc 0(1,r3),=x'00' jne delimited_string Or I can do this: llc r9,0(,r3)r9 = parm byte 0 clijne r9,x'00',delimited_string How do I decide which is better? The second one uses more modern instructions, and 1 extra byte, but no literal. Frank
