HP-15C CE documentation

[J-F Garnier]

(10-31-2024 11:15 PM)Eric Rechlin Wrote:  

(10-31-2024 10:33 PM)naddy Wrote:  J-F Garnier mentioned it here: On the genuine HP-15C, GSB label or f A..E displays the target step while the label key is held down. On the 15C LE/CE, the program execution starts immediately.

That's it, thank you! I propose adding the following to the bottom of page 269:

Holding Label Key after [GSB]

Pressing and holding a label designation after [GSB], or pressing and holding [A] through [E] in user mode, shows the target step on the HP-15C but runs the step immediately on the HP 15c CE.

I'm not sure it's really needed, for three reasons:
- For me, this difference is not an intentional improvement and rather belongs to the same category as the display quirks described in the Differences between the HP 15c CE and the original HP-15C thread, that are not documented in the 15c CE OH.
- Then, holding the [label] designation after [GSB] to see the step is not documented in the manual (AFAIK) - this is not a "feature".
- It may be corrected someday.

On the other hand, it would be good to add, in that p.270 about the old Self-Tests that they not only give no valid results but can corrupt memory.
E.g. starting from a cleared 15c CE:
- enter the program step 001 LBL A
- do the ON/x or ON/+ test that almost immediately produces Error 9,
- step 001 is changed to LBL 9.
I doubt this will be ever corrected.

J-F