Computer Organizations and Architecture I

1. Consider a hypothetical 32-bit microprocessor having 32-bit instructions composed oftwo fields: the first byte contains the opcode and the remainder the immediate operandor an operand address.

a. What is the maximum directly addressable memory capacity (in bytes)?

b. Discuss the impact on the system speed if the microprocessor bus has

1. a 32-bit local address bus and a 16-bit local data bus, or

2. a 16-bit local address bus and a 16-bit local data bus.

c. How many bits are needed for the program counter and the instruction register?

2. How does the principle of locality relate to the use of multiple memory levels?

3. For a direct-mapped cache, a main memory address is viewed as consisting of three fields. List and define the three fields.