I wonder if HLASM 1.2 had that FLAG parm, back when the problem program was last assembled in 1999. (The program is application code -- no MVS macros -- so there is no reason to reassemble it for upgrades.)
I'm in control of our development system, I may add flag(page0) to assembles. -----Original Message----- From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of Peter Relson Sent: Wednesday, July 3, 2024 12:24 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: What's at a comma? The code is checking 7 bytes at location x'6B' through x'71'. As of z/OS 2.5 that area is all zeroes. Prior to z/OS 2.5 for any z/Architecture IPL it is not. The same is true for location 0 and others. Since none of them are programming interfaces (such that changing the value is not something we would feel a need to disclose), I doubt that anyone at IBM would try to list them for you. But if you have access to both a release before 2.5 and a release 2.5 or later, you could probably figure it out with not much difficulty. Someone asked about "IPL PSW". These 7 bytes have nothing to do with any IPL PSW. And the PSW's used for IPL are not preserved in low storage for later viewing. Assembly option FLAG(PAGE0) would have alerted you to the error: ** ASMA309W Operand 0(R7) resolved to a displacement with no base register ** ASMA309W Operand COMMA resolved to a displacement with no base register Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
