The module msp430.asm provides an assembler for MSP430 and MSP430X CPUs. There is also a disassembler.

Additionally a (almost C compatible) preprocessor is provided.

The tutorial and command line sections cover the command line tools and how to use them. The API section is about the internals of the tools and may be interesting to developers that extended the tools or use them as a library.

Also available is a Forth cross compiler that can translate Forth programs to MSP430 assembler.