The Five Steps of a Load Instruction
Instr Decode /
Reg Fetrch
Clk
PC
Rs, Rt, Rd,
Op, Func
Clk-to-Q
ALUctr
Instruction Memory Access Time
Old Value
New Value
RegWr
Old Value
New Value
Delay through Control Logic
busA
Register File Access Time
Old Value
New Value
busB
ALU Delay
Old Value
New Value
Old Value
New Value
New Value
Old Value
ExtOp
Old Value
New Value
ALUSrc
Old Value
New Value
Address
Old Value
New Value
busW
Old Value
New
Delay through Extender & Mux
Data Memory Access Time
Instruction Fetch
Address
Reg Wr
Data Memory
Register File Write Time
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