HSW12

HSW12 is an assembler and debug environment for Freescale's HC11, HC12, HCS12, and HCS12X microcontroller families.

The HSW12 GUI is split up into several windows to give you the freedom to place its components anywhere on the screen. It is written in Perl/Tk and provides an interface to the D-BUG12 POD. It comes with its own assembler which has been written in Perl as well.