1. Given the following hypothetical instruction set:

0001 = Load AC from memory location

0010 = Store AC to memory location

0111 = Multiply value in AC with data at memory location

Assume the first value (9) is stored at location 900 and the second value (4) at 901, using this instruction set, develop a program to compute and store their product at location 808.

Assume the program is to be loaded at location 400, describe the interaction of primary

Memory and the CPU registers: PC, AC, and IR, for the execution of this program.

2. Describe the memory hierarchy of inboard, outboard, and off-line storage in terms of cost and speed.