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Brad Barton · (This post was last modified: 03-31-2017 10:55 PM by Brad Barton.)

(03-31-2017 08:16 PM)Greg Wrote: will produce (6 + 4 + 2 + 1 + 7 +) 20.

Does anyone have a physical HP-65 that can confirm that for me?

Yes, the result is 20 on a physical 65. As you suspected, when the program encountered the RTN in the A subroutine, it was sent back to finish up the originally executed D subroutine, rather than run sequentially through the other subs.

Brad