(71B) FORTH questions

[rprosperi]

(08-01-2023 03:46 PM)floppy Wrote:  the question remain: what setup is the best for Forth 71B?
- 2x 62KB RAM & ROM Forth or
- 1x 128KB & ROM Forth or
- 4x32KB and move the Forth/assembler into Multimod?

These configurations would all perform the same, there is no performance advantage for using different size memory modules.

Note that you will probably want to separate some of that as IRAM, so you have more storage space for source files, alternate FORTHRAM files, etc.

If you have a 64K RAM module in Port-1, you simply do:

FREE PORT(1)

which allocates the first 32K of that module to become :PORT(1) (also called :PORT(1.00) ) and then can do things like
COPY MYFILE TO MYFILE:PORT(1) (Note: you can also use "COPY MYFILE TO :PORT(1)" if you want to keep the same filename.

Also, note that as you add new words to your FORTHRAM file, they are simply added to the end, even if a word is already defined with that name. In this case, all new words which reference that word name will only "see" the newer copy and space is wasted.

To remove a word from the dictionary, use

"FORGET WORDNAME"

which will remove the latest copy of WORDNAME from FORTHRAM, as well as all words added after WORDNAME.