Back in the 1960s, maybe earlier, ** meant 0 in, e.g., FAP.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Assembler List [[email protected]] on behalf of Mark Boonie [[email protected]] Sent: Wednesday, April 29, 2020 5:00 PM To: [email protected] Subject: *-* I've probably been writing assembler for too long to be asking this question now, but what is the purpose of coding '*-*' in some assembler expressions? I've seen it in parameter lists (usually as an adcon), operands of executed instruction (e.g., MVC 0(*-*,5),0(6)), etc. As far as I can tell it effectively operates the same as '0', so it must mean something to the coder and/or the reader (but not to this reader). Any insights? - mb
