(HP71B) ASM question

[J-F Garnier]

(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