Design a RISC-V 4-Bit ALU in Logisim | Complete Tutorial on Addition, Subtraction, AND, OR, XOR
In this video, we’ll guide you through designing a 4-bit Arithmetic Logic Unit (ALU) based on the RISC-V instruction set architecture (ISA) using Logisim. The ALU is a crucial part of any CPU, and we'll demonstrate how to implement key arithmetic and logic operations like addition, subtraction, AND, OR, and XOR.
We'll cover:
The role of the ALU in the CPU
Step-by-step design of a 4-bit ALU in Logisim
Using multiplexers and control signals to select operations
Testing the ALU with sample inputs
By the end of this tutorial, you'll have a fully functioning 4-bit ALU that follows the RISC-V ISA. And if you're up for a challenge, try extending the design to create a 32-bit ALU, just like in real-world RISC-V processors!
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Important links:
GitHub Link: https://github.com/merldsu/Logisim.git
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