Question

T Section A. 1. Intel Pentium chips used in Windows PCs need external chips to store data. bytes of on-chip data RAM. 2. The ATmega64 has 3. Which of the following

is (are) illegal? and [50 marks] (a) ADD R20, R11 (b) ADD R16, R1 (c) ADD R52, R16 4. What is the status of the C flag after the following code? LDI R20,0x54 LDI R25, 0xC4 ADD R20, R25 5. True or False. In BREQ instruction, the compiler jumps to location if zero flag is active. 6. The time delay of following program is LDI R15, 12 LDI R16, 14 LDI R21, 5 ADD R15, R16 ADD R15, R21 7. Write a short program that make all pins of PORTB one using R19 register. 8. True or False. Parallel communication needs fewer traces and wires than serial communication. if crystal frequency is 8 MHz:

Fig: 1