A 1.1.6a Worksheet (HL Only) Answers
a) Four instructions are in progress at t4. b) Instruction 1 is at write-back, instruction 2 at execute, instruction 3 at decode, instruction 4 at fetch. c) Five instructions complete in 8 cycles with pipelining. Without pipelining they would take 5 × 4 = 20 cycles. a) Throughput: the number of instructions completed per unit of time; pipelining raises it. Example: a four-stage pipeline completing close to one...