CSE 141 Lecture Notes - Lecture 7: Critical Path Method
19 Oct 2017
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You she thinks she can improve the mips single cycle. If = id = ex = m = wb = 200ps lw ,16() can"t do base+disp anymore. have to split into 2 instructions: Ic up 10%. cpi same. ct down 20% Ic same. cpi same. ct same. complexity up. 1000 ps: addi , , 16. Now, i don"t need to use the alu to compute the base+disp address! Break up execution into smaller tasks, each taking a cycle. Id: decode & reg fetch (figure out instr and read reg operands) 2. inputs to funct block that outputs this element. B. the instruction is not determined until after 2nd cycle i don"t know what to do with the bits until i decode. D. trick question - they aren"t always the same. Any non-critical signals are don"t cares - . Ir = mem[pc], pc = pc + 4 in . Aluout = a op b (op specificed by func code bits!)
