Using the SPIM S20: A MIPS R2000 Simulator

1. What is SPIM ?

SPIM S20 is a simulator that runs programs for the MIPS R2000/R3000 RISC computers. It was developed by James Larus at the University of Wisconsin-Madison. Currently the simulator runs, at IIT, on charlie, on the deltas cluster (all running a flavor of the the UNIX operating system called IRIX), and on the CSAM's network of PCs.

You can retrieve and install on your PC the simulator: see section 3.

2. Using SPIM in the PC labs

Currently the simulator is available in SB-112J and SB-112K. All PCs there run Windows95. To start the simulator you just double click on the SPIM icon which, most likely, can be found on the desktop.

If the SPIM icon is not available, then you have to open the following folders:

and then double click on the SPIM icon.

3. Running SPIM on your PC

You can download through anonymous ftp the necessary files from and then follow the instructions to install the simulator on your PC.

This page has been created (August, 1996) by: Virgil Bistriceanu -

This page is maintained by: Virgil Bistriceanu -

Last update: August 27, 1996