How to re-compile the Atari ST VolksForth kernel

Requirements:

Files:

Step 1: Compiling a new kernel

make your changes to the VolksForth kernel (FORTH83.FB)
start a fresh copy of VolksForth (File 4TH.PRG)
enter: include c.fb. This will compile the kernel. It will load the files "ASSEMBLE.FB", "TARGET.FB" and "FORTH83.FB" and will write the generated not kernel as "4THIMG.PRG". This new Forth Image is very very basic, it does not contain the file interface and can only load source for Blocks (sector I/O) from the Floppy Disks A: or B:
exit the VolksForth (BYE)

Step 2: loading the file interface into the new Kernel

format a new floppy (360 KB or 720 KB floppy, HD floppies will not work) in drive A:
copy the following files exactly in this order. The order is important, as the new VolksForth kernel need to find the source code at the correct block/sector locations!: PATCH.FB, ASSEMBLE.FB and FILEINT.FB. PATCH.FB must be in Block 1, ASSEMBLE.FB must start at Block 6 and FILEINT.FB must start at Block 24 ($18).
execute the new VolksForth kernel (4THIMG.PRG).
select drive A: 0 drive
test that PATCH.FB is in Block 1: 1 list should show the PATCH.FB load screen
test that ASSEMBLE.FB is in Block 6: 6 list should show the ASSEMBLE.FB load screen
test that FILEINT.FB is in Block 24: 24 list should show the FILEINT.FB load screen
load the patch tool: 1 load
save the new VolksForth Image to disk: save-system 4THCORE.PRG. 4THCORE.PRG is now the kernel plus the file interface. This is a minimal but useable Forth system

Step 3: build a full VolksForth system

edit the file "STARTUP.FB", add or remove features you want to have in your VolksForth system
start 4THCORE.PRG created in step 2
execute "STARTUP.FB": include startup.fb
save the new image under a new name (be careful not to overwrite your original 4TH.PRG, make a backup first!): save-system myforth.prg
your new VolksForth system is now ready!

Have fun.