[P]aul from Rowley Associates has released his Butterfly Basic interpreter for the MSP430. This interpreter was modeled after the BASIC  you would find on the Acorn Atom PC. The interpreter has been written for the MSP430F449 on a Softbaugh ES449 development board. Since it has been written entirely in assembly, there is no need for a compiler. Flash the interpreter to your MSP and code your program through the serial terminal.

A simple loop:

[code lang=”bash”]
10 FOR I = 1 TO 50
20 PRINT #3, "I="; I
25 FOR J = 1 TO 100: NEXT
40 END

Source and documentation is available on Rowley’s site. Thanks for the tip [C]de.