We have seen that CISC designs typically use variable-length instructions. Discuss the reasons for this. A typical CISC processor supports several addressing modes. For example, VAX 11/780 provides 22...

We have seen that CISC designs typically use variable-length instructions. Discuss the

reasons for this.

A typical CISC processor supports several addressing modes. For example, VAX

11/780 provides 22 addressing modes. What is the motivation for supporting a large

number of addressing modes?