Simple Instruction Set Simulator for a subset of AVR
Instructions are not directly implemented but are instead generated from a more abstract description of the instruction in Python. The Python code generates a C implementation for each instruction, which should happen automatically via make.
Instruction implementation are optimised to be as efficient as possible with compiler optimisations enabled. Sadly, this tends to make instructions look very ugly.
I've tried to ensure that the output of code generation is still human
readable, but it won't be getting any prizes for maintainability (not that it
needs to, being generated). In general it is best to avoid src/instructions.c
and consider the descriptions in instructions.py instead.
This project is not affiliated with Microchip/Atmel in any way. Implementation is based purely on publicly available documentation for the AVR instruction set and publicly available documentation for MCUs which use the instruction set.