>> that's just so inappropriate of an opcode, Why is FLOGR inappropiate? why is MVI better?
or even POPCNT (mentioned in the post that triggered your reaction)? >> I just am astounded that one got by? Got by what? Can't IBM use any mnemonic they want? Is there an instance that controls them? I do understand the mnemonic for "COMPARE LOGICAL IMMEDIATE AND TRAP" ;-) -- Martin Pi_cap_CPU - all you ever need around MWLC/SCRT/CMT in z/VSE more at http://www.picapcpu.de
