NOP on HP-41C

[Dave Britten]

(12-28-2020 03:37 PM)Valentin Albillo Wrote:  If speed is wanted, as in this Fastest NOP case, leaving the goose merrily fly is a bad idea as it usually entails many display refreshes which somewhat slow down program execution (most noticeable in some emulators). I always have my programs execute "WAIT...", AVIEW at the very beginning to get rid of the goose for good. Looks more "pro" too.

P.S.: It seems DM42 creators also noticed this because in DM42 you can clear a specific bit in variable RefLCD to disable the goose flight and so avoid the slowdown altogether.

Regards.
V.

Very true. I'm guessing many large application programs end up VIEWing something, thus hiding the goose. Has anybody benchmarked the effect of having the goose visible vs. having VIEW/AVIEW visible when passing a label? I could whip up a little program on my 41CX that times execution for, say, 1000 loop iterations, and run it both with and without an initial AVIEW.