SRM University 2007 B.Tech Computer Science and Engineering BANK : Microprocessor/CS201 - Question Paper

4. Discuss the protection mechanism of 80286.
5. Explain the basic programming model of 80386.
6. Explain the various addressing modes of 80386.
7. Explain the 80386 interrupts.
8. Explain the differences ranging from Pentium II, Pentium III and Pentium pro processors.
9. Draw the internal structure of the Pentium pro microprocessor and discuss.
10. Draw the structure of the Pentium II system and discuss.


UNIT-V
PART-A

1. What is memory?
2. Why semiconductor memories are used as main memory in microprocessor systems?
3. What are the various kinds of semiconductor memory?
4. List the features of semiconductor memories.
5. What is meant by volatile & non-volatile?
6. List the volatile & non-volatile semiconductor memories?
7. What are the characteristics of ROM memory?
8. How ROM memories are classified?
9. List the characteristics of EPROM.
10. Write a short note for the memory cell of EPROM.
11. List the features of Static RAM.
12. What is DRAM?
13. List the characteristics of DRAM.
14. Compare Static RAM and DRAM.
15. What is NVRAM?
16. What is physical memory space?
17. What is memory word Size?
18. What is meant by memory mapping?
19. What is memory access time?
20. What are the factors to be considered while selecting a semiconductor memory for a microprocessor system?
21. What is Bus Contention?
22. Why EPROM is mapped at the beginning of memory space in 8085?
23. What is chip choose & how it is generated?
24. Write the typical Control signals involved in EPROM interfacing.
25. Write the typical Control signals involved in RAM interfacing.
26. What is programmed I/O?
27. What is Interrupt I/O?
28. What is DMA?
29. What is need for Port?
30. What is a Port?
31. Give a few examples of port devices used in 8085 microprocessor based systems.
32. Write a short note on Intel 8258?
33. What are the various methods of interfacing I/O devices to 8085 based systems?
34. Draw a simple circuit to decode 3 control signals RD,WR, & IO/M & to produce separate Read/Write control signals for memory and I/O devices.
35. Compare memory mapped I/O, Standard I/O and mapped I/O.
36. What is the drawback in memory mapped I/O?
37. How DMA is initiated?
38. What are the various kinds of DMA?
39. What is cycle stealing DMA?
40. What is Block and Demand transfer mode in DMA?
41. What is a Programmable peripheral device?
42. What is data transfer scheme and elaborate its types?
43. What is Synchronous data transfer scheme?
44. What is asynchronous data transfer scheme?
45. What are the operating modes of 8212?
46. What are the different internal devices of INTEL 8155?
47. What is handshake port?
48. Explain the working of a handshake input port?
49. Explain the working of a handshake output port?
50. What are the internal devices of 8255?
51. What are the operating modes of port A of 8255?
52. What are the functions performed by port C of 8255?
53. List the functions performed by 8279?
54. What is the maximum number of keycodes that can be generated by 8279?
55. What are the programmable display functions of 8279?
56. What are the various sign modes of 8279?
57. What is the bit format used for spending asynchronous serial data?
58. What is baud rate?
59. What is RS-232c standard?
60. How the RS-232c serial bus is interfaced to TTL logic device?
61. What is USART?
62. What are the functions performed by INTEL 8251A?
63. What are the control words of 8251A & elaborate its functions?
64. What are the info that can be found from the status of 8251?
65. What are the tasks involved in keyboard interface?
66. What is debouncing?
67. What is the disadvantage in keyboard interfacing using ports?
68. What is multiplexed display? What is its advantage?
69. What is the disadvantage in 7-segment LED interfacing using ports?
70. State the functions of a CRT controller.

PART-B

1. Write a program & discuss how the speed of a stepper motor is controlled using microprocessor.
2. Distinguish ranging from serial and parallel mode of data transfer. discuss DMA Scheme of data transfer.
3. Explain the concept of programmable internal timer IC 8253.
4. What is the need for programmable interrupt controller? elaborate the modes of operation in 8259A?
5. Give a detailed block diagram of a programmable communication interface USART.8251 and discuss the function of every port. explain its programming.
6. Briefly discuss the various modes of operation of a DMA controller.
7. Show how a floppy disk controller and a DMA controller are connected in an 8086 based systems and discuss how data is transferred in such a setup.
8. Briefly discuss the operation of a CRT controller 8275.
9. What is memory interfacing? Draw the interfacing circuit of IC 6116 & IC2732 and discuss.
10. Draw and discuss the programming format of IC 8255 PPI.
11. a) Draw a flowchart for Keyboard Scanning Subroutine.
b) Draw the circuit diagram for seven segment LED display using port.

Earning:   Approval pending.