HP 32SII speed differences

[Dave Britten]

(01-30-2020 02:22 AM)rprosperi Wrote:  Did both machines start with the exact same memory conditions? E.g. did one have other programs or variables defined that the other didn't? I know nothing of the internals, but amount of available memory could well affect the performance.

Also, had the program been run more than once on one or the other machines? Are internal jump distances stored after the first run, etc.?

I'd do the exact same setup on both (full h/w reset, enter program, run program 1st time) to be sure of consistent conditions. These are good practices of course, but in this case, I'd guess they make no difference.

Yes, I did a full On-A-F reset on both machines, typed in the program, compared them side by side, verified checksums matched, etc. and started them running at the same time. I used the stopwatch on my 41CX to mark their completion times, so I might be off +/-1 sec on the readings due to reaction time. The first time I ran them, I wasn't timing formally, as I only expected a couple seconds difference between them at most, but the second run where I timed a ~40 sec difference appeared consistent with the first attempt.

I'm very curious to find out if this is typical for the older ROM 0 models. To check your ROM version, run the self test, and at the 32SII-OK display, look at the flag annunciators for the ROM version.