MSA    : 680x0 Version works on all ATARI systems...
         All ST/STE/Mega ST/Mega STE systems.

MSA-030: 68020 Version works on ATARI systems with a 68020 or more!
         Made for Falcon030 without a FPU...

MSA-TT : 68020 + 68881 Version Special made for ATARI systems with a
         68020 (or more!) and FPU (68881, 68882)
         If you have a Falcon030 with a FPU (68882) use this version.