spim is a simulator for MIPS AssemblyCode^? written by JamesLarus. There are two versions of the program. spim provides a commandline interface and xspim provides a graphical user interface to the simulator. The latter provides a view of the machines registers and memory as it runs, plus the possibility to set break points in the code.

The simulator software and the documentation are available from

• http://www.cs.wisc.edu/~larus/spim.html

At Utrecht University spim has been installed at /projects/stratego/Spim/bin.