I too would find that interesting. Fred!
-----Original Message----- From: IBM Mainframe Assembler List [mailto:[email protected]] On Behalf Of John McKown Sent: woensdag 11 maart 2015 15:50 To: [email protected] Subject: Re: LZRG??? Does this mean that 56-bit addressing is "a thing"? Given some of the new instructions, such as LGZR, I wish IBM would publish a manual with a title like: "What were the architects thinking of? Explanation of the reasons behind the instructions in the z architecture". Some are obvious, like L, ST, A. But why a single instruction to do this? Is it _that_ often used? And POPCNT is another one. Why do I need to know the number of 1 bits in each individual byte in a GPR? Is it _that_ common a question in application or system code? I can see the use for LT vice L + LTR -- He's about as useful as a wax frying pan. 10 to the 12th power microphones = 1 Megaphone Maranatha! <>< John McKown ----------------------------------------------------------------- ATTENTION: The information in this electronic mail message is private and confidential, and only intended for the addressee. Should you receive this message by mistake, you are hereby notified that any disclosure, reproduction, distribution or use of this message is strictly prohibited. Please inform the sender by reply transmission and delete the message without copying or opening it. Messages and attachments are scanned for all viruses known. If this message contains password-protected attachments, the files have NOT been scanned for viruses by the ING mail domain. Always scan attachments before opening them. -----------------------------------------------------------------
