Differences between MOS 5.xx Master Compact ROM sets
      ====================================================

MOS 5.00:
  ADFS 2.00
  BASIC 40
  UTILS 1.00
  MOS 5.00


MOS 5.10:
  ADFS 2.10
  BASIC 40
  UTILS 1.10
    R-PowerOn displays "Clearing options...please wait"
    some other internal changes
  MOS 5.10
    only change is version string "MOS 5.10"


MOS 5.11:
  ADFS 2.10
  BASIC 4.10
  UTILS 1.10
  MOS 5.11
   extra internal support for internationalisation?