Posts: 1,755

Threads: 112

Joined: Jan 2005

Hi, Howard:

Howard posted:

"Doesn't that ENTER mean that you would have

* R1 = N *

X = 2Pi+2

Y = -N

R2 = 2Pi +2

*
*

It depends on whether [ENTER] disables stack lift for the

following numeric entry (so that it overwrites the contents

of the X register) *AND* [PI] is considered a numeric entry

key in the HP-67, which I can't test right now.
I assumed that either that's the case (so that [ENTER], [PI]

does overwrite X) or the original coder wrongly thought it

did, because frankly I find much more plausible that he is trying to compute:

-N + 2*Pi

which is frequently seen as part of many computations, than:

2*Pi + 2

which seems pretty useless to me.

Best regards from V.