(71B) FORTH questions

[KimH]

Thanks a lot for that DAT file Bob

It puzzles me how things are right under my nose and then “someone” triggers me to actually “look and learn” - had been looking for good Forth examples on Titan - and there it was.
As a bonus an example of how to assemble with the forth assembler.

Now I am waiting for a rainy day - again…

KimH

(06-20-2023 02:15 AM)rprosperi Wrote:  If you plan to get deeep into 71B Forth and start decompiling, disassembling, and other gory stuff, I strongly recommend you closley examine the "HP-71B Software Developer's Handbook", available here:

https://literature.hpcalc.org/items/1067

A LIF image of the included disk is attached below (remove trailing ".txt", used to allow attachment in the forum).

There is a small, but very good Forth section with some very useful Forth words which are BY FAR the best examples I've ever found on how the 71B Forth System works. The software that came with the book includes full Forth source code for all the words in the package; studying them teaches one a lot about 71B Forth.

While there is no Clock Word, there are words for using the clock to time program execution, walking the dictionary chain, de-compiling a Forth word that's in the dictionary, etc.

This will save you some trouble: The pkg was for the Forth/Assembler and not for the 41 Translator, as the internal dictionaries for the two Forth-based products are not the same. 37 years ago I modified the Forth sources to work with the 41 Translator ROM, but don't believe I still have that version.