$1.$ A degree$-$N superscalar system is one that allows up to N instructions to be

processed at the same time in each pipeline stage. A degree$-$N superpipelined

system also allows up to N instructions in each pipeline stage. A scalar pipeline

allows at most one instruction in each stage at a time.

a$)(5)$ Module $8$ describes superscalar and superpipelined systems. How does a

degree$-4$ superscalar system differ from a degree$-4$ superpipelined system?

b$)(5)$ Running at a clock rate of $1$ GHz$,$ how many nano$-$seconds will an initially

empty, degree$-4$ superscalar version of our MIPS pipelined system take to

complete $28$ independent R$-$type instructions? Express your answer in the

format ddd$.$dd$.$

c$)(5)$ Running at a clock rate of $1$ GHz$,$ how many nano$-$seconds will an initially

empty, degree$-4$ superpipelined version of our MIPS pipelined system take to

complete $28$ independent R$-$type instructions? Express your answer in the

format ddd$.$dd