This is my working setup until i find a better way:

This is with the software suplied with it.
(workbench info: kick 51.51, workb 40.0, alpha)
(flashcard=ApolloOS_R7-1.img_16gb.7z)

For now VASM is the only assembler that uses the new instructions.
my setup is this:

Editor (green)
location: SFSboot/tools

Vasm (red)
location: stuff/developer/vbcc/bin/ vasmm68kmot
latest: sun.hasenbraten.de/vasm/index.php?view=bincur  vasmm68k_mot_os3.lha

Debug (pink)
location: stuff/developer/devpac/

Directory to run (blue)
location: SFSboot/tools/dopus

In a created folder named 'src' i copy vasm68kmot.
Here i place code made in 'editor'

Compiling
---------

do this only once:
  In editor i make a text file that i call 'a' that goes into the same 'src' folder
  The text is:
  vasmm68k_mot -Fhunkexe -kick1hunks -m68080 -quiet -o ram:test code.s

  This text file is a script.
  code.s = tekst (code) file made in editor
  ram:test = resulting program

Running the script to compile
Make the window 'src' active by clicking on it.
Press <amiga-e> (the right ctrl on the v4sa is the amiga-key) to activate 'CLI'.

A window pops up 'execute a file'
The command is: cli <enter>
The window disapears and a new black window 'apollo-os shell' pops up.
  If you have started it from the 'src' window the path ends with '/src>'
Start script-file to compile with:
execute a

After this just a up-arrow + enter will compile again.

(lightblue)
Now you can run the program by clicking test.

(pink)
Or use debug to examine the program.

  executeable file to load
ram:test<enter>
  command line
<enter>

The manual for debug (devpac) can be found online.
Command summary on page 180.
(archive.org/details/DevPacV3.00.Manual incl. downloads)

readme.s - is for the absolute beginner that wants to do assember.
After half an hour you have done 10 cpu-instructions.
You see what it did inside the cpu.
(see pictures below)

content zip:
- a
- debug / Monam
- editor
- vasmm68k_mot
- readme.s