MICROPROCESSOR AND MICROCONTROLLER (EC 6504) PART A 1. What is pipelining? 2. What are the signals involved in memory bank selection in 8086 microprocessor? 3. What is the use of MN/MX signals in 8086? 4. List the advantages of using segment registers in 8086. 5. Explain the BHE and LOCK signals of 8086 6 .Mention the function of SI and DI registers. 7. What is meant by software interrupt in 8086? 8. What is the function of TF, DF and IF in 8086? 9. What is the operation carried out When 8086 executes the instruction MOVSW & MOVSB ? 10. Differentiate between Memory mapped I/O and I/O mapped I/O. 11. What is USART? Define Baud rate. 12. Give the various modes of 8254 timer? 13 .What is microcontroller? 14 . What are the alternate functions of Port 3 in 8051 microcontroller? Name the interrupts of 8051 microcontroller 15. What is the function of SM2 bit present in SCON register in 8051? 16. If a 12 Mhz crystal is connected with 8051, how much is the time taken for the count in timer 0 to get incremented by one? 17. What is the function of DPTR register and TMOD register? 18 . What are the register banks in 8051 microcontroller & give applications of microcontroller?. 19 .What are the bits available in TMOD register? 20.How does 8051 differentiate between the external and internal program memory? 21. What happens in power down mode of 8051 microcontroller? 22.Give steps to program 8051 for serial data transfer. 23. How does the status of EA pin affect the access to internal and external program memory? 24.Give the priority level of the interrupt sources.
PART-B 1. (a).Draw the 8086 functional block diagram and explain its architectural features. (b) Explain about addressing mode of 8086. 2.
(a) Explain about data transfer and arithmetic Instruction set of 8086. Data Transfer instruction (b). Explain about assembler directives.
3. (a) Explain about 8086 signals. (b)Explain about procedure and macro. 4. (a). Explain about IO processor (b). Explain in details about closely coupled configuration and loosely coupled configuration. Write about multiprocessor configuration 5. (a) Explain the function of Programmable Peripheral Interface (8255) (b). Explain the function of KEYBOARD/DISPLAY INTERFACE (8279) 6 (a). Explain 8051 architecture. 6.(b). Explain input output ports of 8051. 7. (a) Explain 8051 interrupt structure. (b )Explain microcontroller counters and timers with neat diagram.
mpmc(qp-).pdf
23. How does the status of EA pin affect the access to internal and external program memory? 24.Give the priority level of the interrupt sources. Page 2 of 3 ...
