1) Explain the function of the following registers in a CPU.

PC

MAR

MBR

IR

2) For each of the following 6-bit operations, calculate the values of the C, Z, V, and N flags.

3) What is the difference between a stack pointer and a frame pointer?

4) Investigate the variations in multiply and divide instructions supported by three different microprocessor families. Why is there more variation in the ways in which multiplication and division are performed than in, for example, addition?

a. 001011+001101 111111 b. +000001 c. 000000111111 101101 d. +011011 e. 000000000001