Kind of like clearing a register before an LH. Charles
-----Original Message----- From: IBM Mainframe Assembler List [mailto:ASSEMBLER-LIST@LISTSERV.UGA.EDU] On Behalf Of Steve Smith Sent: Wednesday, November 6, 2019 10:45 AM To: ASSEMBLER-LIST@LISTSERV.UGA.EDU Subject: Re: Questionable Instructions in Obtaining EAX documentation Prefixing is absolutely* irrelevant to this discussion, and to 99.99% of assembler programmers for their entire lives. It's well-documented if you're interested, but you probably aren't. Any discussion here is very likely to be spurious, specious, and superficial.
