BB20

Short:        manipulates bootblocks + features + C source
Architecture: m68k-amigaos

    BB  is a multi-purpose small utility to manipulate Amiga floppy disk boot
  blocks.  Besides being able to read, write, show and install bootblocks, BB
  is  able  to fix the bootblock checksum of a disk, so that you will be able
  to  modify  bootblocks and keep them bootable.  It is also able to insert a
  small preamble in existing bootblocks that will put the Fatter Agnus in PAL
  mode,  so  that  any  programs  - including Workbench and even most heavily
  protected  games  -  will  believe to be running in a PAL machine, with the
  corresponding   PAL   display.    This  is  probably  the  easiest  way  to
  automatically  boot  european games and demos in PAL mode.  This is version
  2.0, and includes source in C.  Author:  Bruno Costa.