I'm not going to be much help here, because the assembler can't do conditional assembly yet, and macros are really, really simple. Sorry.
A FORTH assembler can readily do conditional assembly.
: PUSHREGS, PHA,
65C02 @ IF
PHX, PHY,
ELSE
TXA, PHA, TYA, PHA,
THEN ;
(This assumes that tha ...

Hah :lol: I'd be interested to hear about this - did you just use PEEK & POKE for the linked lists? Because IIRC Commodore BASIC doesn't have any pointer facilities at all...
No, I used a parallel array of integers where NX%(I) gave the index number of the next element in the main array.

This is ...

I once did something similar with Commodore 64 Basic. Implementing recursion and linked lists in a language that is designed for neither was an interesting exercise.

I'm not sure how I am supposed to react to this website:

Is it, "WOW! Only Y minutes? That's fast!!!"

or "What? I have to spend Y minutes learning this? Who has that much time?"

Nice coding there. The comments and stack diagrams are first class.

One question: Were you planning to have all the editor commands be part of a EDIT or EDITOR dictionary or do you have to avoid creating words that conflict with the editor words?

I don't know if they meet your long list of requirements but "Starting Forth" and "Thinking Forth" by Leo Brodie are still definitive texts. You might be able to order them from Amazon but they are mainly available as downloadable files nowadays.

Maybe you should get a kindle.

Not to start a flame war, but of course the, ah, underlying concept here (no spoilers) is famously wrong , and you should all be ashamed of yourselves for giving it space in a forum where there are young and impressionable minds present. See here for pure truth and beauty on this subject.

I'm ...

Simple:

I would have thought that the opposite would be the case.

I expected there to be a front-runner for the assembler.
I guess it depends on what was available at the time you sought out an assembler (C64ASM came out in the 90s though I can't remember when I downloaded it). If it works for you then there is little incentive to change to a different type - no ...

I use C64ASM.EXE to assemble my 6502 code. This is a DOS program which I run in DOSBOX on my Linux system. A MAKE.BAT file makes it easy to do the necessary assembling without having to remember the switches each time.

For small editing purposes, I will use MSDOS's EDIT program or another DOS ...

I stewed for many hours cooking the UM/MOD and UD/MOD further down in that thread. I don't have a 6502 Forth handy to do the speed comparison, but I'm willing to bet you a soda pop that mine will beat yours slightly for speed and significantly for size.
You'd win that bet hands down. At the time I ...

I don't think you need to worry about the source-1 and target-1 baggage if you pre-increment your length and post-increment your load and store pointers.
That would require an additional subroutine call for the post-increment.

@theGSman: I didn't know you were such an optimization freak! After ...

Looking at your code, you're using the Y reg as an index, so you need to load it with zero and use the indexed indirect page zero addressing.
Even so, my code saves 4 bytes per block subroutine and 7 bytes on the UPD_STL routine. Of course, as you point out, this is to no avail if you have to ...

As the (further updated) code sits now, the UPD_TL is part is UPD_STL. In the monitor code, UPD_STL is called by the EEPROM program routine, the memory compare routine and the memory move routine. The UPD_TL is called by the memory fill routine. So in all, the update routine is used by four ...