hp65 vs 41c vs 35s µbenchmark

[Dave Britten]

Average of three trials on my 34S in 4-level-stack mode, timed with my 95LX, as that's the stopwatch I have in arm's reach at the moment: 43,266

Controlling the program counter directly can also be used to great effect:

Code:

LBL 01
1
ENTER
ENTER
ENTER
+
BACK 001
END

...Yields 94,035 (just one trial); more than twice as fast.

Interestingly, this "optimization" only got me 76,250:

Code:

LBL 01
1
INC X
BACK 01

Evidently INC is slower than all the stack cloning, at least in the case of the X register.

This is all tested on firmware version 3.2 3472 on a 30b, by the way. I imagine the Windows/iOS/etc. versions score several orders of magnitude higher.

I'll try my 32S later for the sake of comparison. My hunch is that it will be close to the 35S, but I can't say in which direction.