MJSim is an Atmel AVR simulator and MeggyJr emulator that was developed for use in an introduction to compilers course at Colorado State University. MJSim can be used in batch mode to enable grading or be used in GUI mode where one can step through the AVR instructions, set break points, visualize the stack, heap, registers, and condition codes, and visualize the MeggyJr as calls to a slightly modified version of the MeggyJr simple run-time library are made.
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