Exercise 1

1. A program of 385 instructions (2 bytes per instructions) is stored in a RAM memory at a starting address (F200)H. What would be the address corresponding to the last instruction of this program? (show details of your steps)

2. Can a 3bits addition operation be executed in an 8-bits CPU? Justify your answer.

3. Is it possible for the PIC18 microcontroller to execute simultaneously an addition operation involving 7 operands? (i.e. in one instruction cycle). Justify your answer

4. Which of the following hardware resources are available in the PIC18 microcontroller? (select all applicable)

1. Instruction register
2. ROM memory
3. Memory cache
4. 16 bits-ALU

5. Why someone would needs to use a microprocessor instead of a microcontroller in an embedded hardware system? (In one sentence only)

6. Which register of the CPU holds the address of the instruction to be fetched?

7. Give three embedded systems, which use a microcontroller as the processing engine.

a. Embedded system 1:

b. Embedded system 2:

c. Embedded system 3:

8. which of the following hardware resources is not part of a CPU: (select all applicable)

a. ALU

b. Memory cache

c. Instruction register

d. Program counter

e. Timer

f. Status Register

Exercise 2

In a given byte-addressable computer, memory locations 50000H to 9FFFFH are available for user programs. The address bus of the memory is 28 bits and the CPU has a 16 bits ALU. Determine the following:

1. Which of the address bus or data bus is a bidirectional bus?

2. Give example (only one example) of what may be stored in the non-user program?

3. The total number of Kbytes available in the memory for the user programs

4. The total number of Kbytes available in the memory for not-user programs