ALUOp: Holds the next operation for the ALU to perform. Only passes part of the instruction (func part of R-Type instructions, the rest is resolved from the instruction register)
ALUSrcA: 1 bit signifying that the Input A into the ALU is:
Coming from PC(0)
Coming from register file(1)
ALUSrcB: 2 bits signifying that input B is:
Coming from register file(0)
Coming from constant value(1)
Coming from instruction register(2)
Coming from shifted instruction register(3)
RegWrite: A flag indicating if we are writing into the register file
RegDST: Holds the destination address of our register write
Instruction Register
PCWrite: Writing the ALU output to PC
PCWriteCond: Holds the ALU output and writes only if ALU’s zero condition is true
IorD: a flag determining if we are reading or writing
IRWrite: The register data to be written
PCSource: Holds the new value of PC
Memory
MemRead: A flag indicating the processor is reading from memory
MemWrite: A flag indicating the processor is writing to memory
MemToReg: A flag indicating the processor is recieving data from memory and not a register
