Basic 32 bit Microcontroller Design

Implementing a datapath to execute Arithmetic (R-type) operations

Designed Block Diagrams

Below is the Datapath that we will use. We will start with understanding how we can configure the Control signals based on any given instruction.

ALU Operations Table listed with ALU control values.

Operations	ALUControl value	Description && Notes
ADDITION	0000	ALUResult = A + B
SUBRACTION	0001	ALUResult = A - B
MULTIPLICATION	0010	ALUResult = A * B
AND	0011	A and B
OR	0100	A or B
SET LESS THAN	0101	ALUResult =(A < B)? 1:0
SET EQUAL	0110	ALUResult =(A=B) ? 1:0
SET NOT EQUAL	0111	ALUResult =(A!=B) ? 1:0
LEFT SHIFT	1000	ALUResult = A << B
RIGHT SHIFT	1001	ALUResult = A >> B
ROTATE RIGHT	1010	ALUResult = A ROTR B