Indicate whether each of the following applies to CISC or RI

Indicate whether each of the following applies to CISC or RISC by placing either a C (for CISC) or an R (for RISC) in the blank.

_____ Simple instructions averaging one clock cycle to execute

. _____ Single register set.

_____ Complexity is in the compiler.

_____ Highly pipelined.

_____ Any instruction can reference memory.

_____ Instructions are interpreted by the microprogram.

_____ Fixed length, easily decoded instruction format.

_____ Highly specialized, infrequently used instructions.

_____ Use of overlapping register windows.

_____ Relatively few addressing modes.

Solution

1) __RISC___ Simple instructions averaging one clock cycle to execute

RISC processors only use simple instructions that can be executed within one clock cycle.

.2) __RISC___ Single register set.

RISC was based on gaining performance through the use of pipelining and an aggressive use of a technique known as register windowing

3) ___RISC__ Complexity is in the compiler

4)___RISC__ Highly pipelined.

5)___CISC__ Any instruction can reference memory.

6)___CISC__ Instructions are interpreted by the microprogram.

7)__RISC___ Fixed length, easily decoded instruction format.

8)___RISC__ Highly specialized, infrequently used instructions.

9)__RISC___ Use of overlapping register windows.

10)__RISC___ Relatively few addressing modes.