(HP71B) ASM question
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07-30-2024, 07:28 AM
Post: #11
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RE: (HP71B) ASM question
(07-29-2024 09:25 AM)floppy Wrote: So, now, how to reduce the Saturn ASM pains?.. RPL was initially developed for the exact purpose: make the calculator development much easier and faster. It was developed for the HP-71B successors and was first used for the 18C. Then RPL was exposed to the user on the 28C, and the internal RPL was renamed "System-RPL". Another well-known example of RPL used for internal system programming and not exposed to the user is the HP-42S. However, using RPL for system programming has a cost: a significant loss of performance. For instance, the HP-32S written in pure assembly is faster than the 42S, despite a slower CPU. For the HP-71B, FORTH is in a similar position: simpler programming, but not as fast as pure assembly. You may rewrite your <F> word in FORTH to evaluate the benefit ease-of-programming/performance. J-F |
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