MIPS multicycle datapath made in logisim evolution for the "Computers' Architecture" course @ Università degli studi di Milano-Bicocca, academic years 2020/2021, 2021/2022, 2022/2023, 2023/2024.
Datapath and FSM are taken from "Computer Organization and Design: The Hardware/Software Interface, Mips Edition", 3rd edition.
This datapath implements:
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R-Type instructions (ADD, AND, SUB, SLT)
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Load Word
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Store Word
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Jump
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Branch Equal
NOTE: the current implementation only recognize overflow for ADD operations and could misbehave for SUB operations.
Repository structure:
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slides: here you can find the presentations used for the course, giving some hints on how to use this simulator. -
truth-tables: here you can find the truth tables used to generate the sub-circuits. -
hex-instructions: here you can find some example memory files to load in the RAM to see how the datapath works. -
exercises: here you can find the solution to some exercises we made for the course. The aim of each exercise is to modify the datapath to implement a new instruction or exception. Thanks to Simone Fontana, he made most of the work here, I just translated his work in logisim.