Seymour, you said that POPS does not explain how to symbolically encode instructions. What other manual tells you how to code instructions? Tell us where the MVC instruction is documented outside of the POPS? I used PLO as an example because anyone can code MVC without looking at the manual. if the POPS incomplete, then contact IBM to correct the POPS. For me, PLO was adequately described for using it correctly. On Wednesday, June 28, 2023 at 02:21:25 PM PDT, Seymour J Metz <[email protected]> wrote: Water is wet. There is no need to refute claims that nobody made.
PLO? PoOps describes the layout of the data, not the DCs needed to generate them. ________________________________________ From: IBM Mainframe Assembler List <[email protected]> on behalf of Jon Perryman <[email protected]> Sent: Wednesday, June 28, 2023 5:11 PM To: [email protected] Subject: Re: Variable symbol without leading & If the POPS does not explain how to symbolically code each instruction, then point us to the manual that does. For instance, what manual tells me how to code the PLO instruction with multiple syntax variations. As for pseudo-ops, they do not generate machine code but instead are assembler control statements (e.g. eject). As for mnemonics, only a few are specifically documented in the HLASM reference (e.g. BNZ and JNZ). The vast majority of mnemonics are macro's documented in product specific manuals and to a small extent OPSYN. The classic example is the toolkit replacing branch instructions with jump instructions. On Wednesday, June 28, 2023 at 11:11:41 AM PDT, Seymour J Metz <[email protected]> wrote: No, PoOps is an architecture manual. It explains instruction formats and semantics; it does not explain how to symbolically encode them, much less explaining all of the pseud-ops. ________________________________________ From: IBM Mainframe Assembler List <[email protected]> on behalf of Charles Mills <[email protected]> Sent: Wednesday, June 28, 2023 2:03 PM To: [email protected] Subject: Re: Variable symbol without leading & The "other manual" for the Assembler is Principles of Operation. If you want to know how COBOL MOVE works, you look at the COBOL Language Reference. But if you want to know how MVC works, you don't look at an assembler manual, you look at Principles. Charles -----Original Message----- From: IBM Mainframe Assembler List [mailto:[email protected]] On Behalf Of Abe Kornelis Sent: Wednesday, June 28, 2023 10:38 AM To: [email protected] Subject: Re: Variable symbol without leading & Jon, I've heard others make that remark before: HLASM is actually two languages. I find the distinction rather arbitrary - both aspects of HLASM are intimately interconnected. As Mr. Metz correctly remarked, there is only a single Language Reference Manual for HLASM.
