Bug in the HP-41 with R/S and stack lift

[Didier Lachieze]

That's an interesting corner case, because in general I think that you would not want R/S to be neutral with regard to stack lift. When starting a program sequence with R/S I expect stack lift to be enabled, otherwise the following sequence would provide a different result if the user enters 0 or just press CLx before pressing R/S:

Code:

STOP
2
+

in the first case the result would be 0+2, in the second case it would be Y+2.

I'm wondering how this is managed on other HP RPN calculators, either before or after the 41C.