Repeat Problem 10-22 for the following CISC instructions.

Borrow B is defined as the complement of the carry out, C.

Problem 10-22

Repeat Problem 10-21 for the following CISC instructions that are specified by register transfer statements.

Problem 10-21

Write microcode for the execution part of each of the following CISC instructions. Give both a register transfer description and binary or hexadecimal representations similar to those shown in Table 10-6 for the binary code for each microinstruction.

Table 10-6

(a) Branch if overflow

(b) Branch if greater than zero

(c) Compare less than

(a) Add with carry: R[DR] R[SA] + R[SB] + C (b) Subtract with borrow: R[DR] R[SA] R[SB] - B -