On Tue, Jun 3, 2014 at 7:54 AM, Charles Mills <[email protected]> wrote:
> XR over SR seems to be a persistent myth. I have been told again and again > from time to time that XR was faster than SR. There is no reason it should > be, and the evidence is that it is not. > Even back in the olden days of yore, I don't understand why one RR instruction which uses the ALU would be any faster than another. Especially back in the days when it was basically all hardware. Even today, most of the ALU based RR instructions are likely "hard wired". If not, I really wonder why. > Charles > -- There is nothing more pleasant than traveling and meeting new people! Genghis Khan Maranatha! <>< John McKown ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
