This is the .xml file that enables the highlighting of the assembly language of Texas Instruments' MSP430 ultra-low-power microcontrollers. It also contains the syntax highlighting for the CPUX instruction set of this family.

To install it, simply copy the file into /opt/kde/share/apps/katepart/syntax/ (for KDE3) or /usr/share/kde4/apps/katepart/syntax/ (for KDE4)

The paths are given in the openSUSE distribution, but I guess you get the idea of the installation path of your KDE