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- From: ivie@cc.usu.edu (CP/M lives!)
- Newsgroups: comp.arch
- Subject: Re: Any use for Branch if Even/Odd ?
- Message-ID: <1992Dec14.085714.62016@cc.usu.edu>
- Date: 14 Dec 92 08:57:14 MDT
- References: <endecotp.723992157@cs.man.ac.uk> <1992Dec12.143116.17635@infodev.cam.ac.uk>
- Organization: Utah State University
- Lines: 19
-
- In article <1992Dec12.143116.17635@infodev.cam.ac.uk>, rf@cl.cam.ac.uk (Robin Fairbairns) writes:
- > In article <endecotp.723992157@cs.man.ac.uk>, endecotp@cs.man.ac.uk (Phil Endecott) writes:
- > |> Can anyone think of a use for the branch if even and branch if odd
- > |> instructions on the Alpha? I'm completely baffled.
- >
- > It's a VMS-ism. All VMS routines return a completion code. If it's
- > odd, the routine succeeded (and there are oodles of ways it can
- > succeed, sometimes); if it's even the routine failed.
- >
- > All very smooth and neat - VMS has some dinkum ideas in there if you
- > pay attention.
-
- Incidentally, I noticed a while ago that the ASCII code for 'Y' is odd and
- for 'N' is even; that is, on VMS, ask a Yes/No question and test the low bit...
- --
-
- Roger Ivie "My God! That computer is full of Pentium!
- ivie@cc.usu.edu It's a wonder that you haven't been turned
- into mutants!"
-