I arrived late to the party... 
Did anyone manage to download the file "HDDROM19.asm" in time?
No, but I also successfully compiled the version I posted earlier and successfully compared it to the original.
I had to comment out a line of assembly code:
;ŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸ ; ROM header ;œœœœœœœœœœœœœœœœœœœœœœœœœœœœœœœœœœœœœœ ; ASEG ;<<<< COMMENTED LINE!!! .phase 4000h
Here is the screenshot:
Vous devez vous identifier ou créer un compte pour écrire des commentaires