> The CPU model number will not be of any use in determining the architecture level which is supported by the release of zPDT
Okay. I'll bite. What is a good indicator? Only the CVT feature bits? > if you could be running under a Linux At least at this moment my sole interest is z/OS, native or VM guest. Charles -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Jim Mulder Sent: Saturday, November 28, 2015 10:25 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Machine Types and Architecture Levels > I am trying to come up with a complete mapping of 4-digit machine > types to > C/C++ ARCH levels. (The universe for my "complete" is z architecture.) > > Google tells me that the zPDT is machine type 1090 or 1091. Is there a > correlation to architecture level? I kind of get the feeling that IBM ships > a software update from time to time that updates the instruction set > to > *some* level. Is there a way to determine the architecture level of a zPDT > instance other than by testing feature bits in the CVT? How does one > set the > C or COBOL ARCH level if one is targeting zPDT? The CPU model number will not be of any use in determining the architecture level which is supported by the release of zPDT or RD&T under which you are running. > VM does not generally alter the problem instruction set of a guest, right, > nor change the machine type number? (I recall that one can change the serial > number.) If VM is running on a z196, every guest sees a machine type > of 2817, correct? VM neither adds store on condition to a machine that > does not > support it at the hardware level, nor deletes it from a machine that does? For z/VM, some terminology which may concern you is "Virtual Architecture Level". And if you could be running under a Linux which is a z/VM guest, you may need to be concerned about "Live Guest Relocation". ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
