I have found the copy protection routine in lbC003172 hehe
(looks like the usual gremlin protection track....)
So far, no sign of any Blitter or copper routine, only pure 68000 code (Pfff !)
EDIT : found LINK and UNLK, so it also use C code
EDIT : Absolutely no use of any hardware register for the GFX, sound, music ! Only DFFXXX Interrupt request, VHPOSR, and 2 others.
The amiga is almost used like if it was an Atari ST, minor the few amiga specific regs, feck !
I understand why the whole bloated thing runs at 6 frames per sec ! The problem is the amount of time needed to work out the ST screen routines and convert those to blitter assisted routines.....