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Dieter · (This post was last modified: 10-09-2017 06:46 AM by Dieter.)

(10-09-2017 04:58 AM)Matthias D. Wrote: Wp34 works, but recently had problems with programming.
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Having ended, the program pointer should be at the start again, making it possible to start next time with R/S only. But as I can trace with "Arrow down", the next operation, the program goes to is "squareroot"!

Compared to HP calculators the 34s behaves differently in this regard. After a program has finished (e.g. with RTN or END) the program pointer is not set to the top of the memory (like on the 34C) nor does it point to the next instruction after the RTN (like on the 67 and 41C). Instead it points to the instruction where you last left it. For instance, if you go to line 005 (GTO . 005) and then XEQ "SPD", the program pointer afterwards will still be at line 005.

This also means there is an easy fix: simply press g RTN after you entered a program. The BEG annunciator will appear in the display to confirm that the calculator is now reset to the top of memory, i.e. line 000. Even if the program ends at another step somewhere down the program it will still be set to line 000 if you press P/R, and R/S will restart it from the first line.

Dieter