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Garth Wilson · 04-15-2020, 02:28 AM

(04-14-2020 02:39 PM)Orome Wrote:
(04-14-2020 06:49 AM)mfleming Wrote: If you are looking for differences in the programming semantics (i.e. opcodes), then I would point to the soft END as a distinguishing feature of the HP41, compared to prior models...

Can you say more about why you think of this an any different semantically from label addressing generally?

You can have local labels that are local to each program. If a label is used in another program as well, the program you're using will go to the right one. You can delete a program all at once without deleting individual steps and having to watch for when you're coming to the next program that you don't want to affect. You can also transfer programs to and from mass storage or cards or extended memory without affecting other programs. Before I had the 41, I used a TI-58c and then a 59. You could sort of have multiple programs in memory at once, but with extreme limitations that the 41 doesn't have, now particularly referring to labels and things like how you would store or load a program with magnetic cards.