QtSpim

QtSpim is a graphical front‑end for the SPIM MIPS32 simulator, allowing users to load, assemble, and execute MIPS32 assembly programs. It supports the full MIPS32 assembler‑extended instruction set except for most floating‑point comparisons, rounding modes, and memory page‑table features. The tool includes a simple debugger and a minimal set of operating‑system services, but it does not run compiled binaries.

The application is intended for students, educators, and developers who need to experiment with or teach MIPS32 assembly language without requiring hardware. By providing a consistent windowed interface across Windows, macOS, and Linux, QtSpim lets users work in the same environment on any of these platforms from a single code base.

QtSpim is maintained as the current version of the SPIM simulator, distributed under a BSD license. Source code is available and can be built with the Qt framework, while pre‑compiled binaries are offered for the three major desktop operating systems.