U.G DEGREE EXAMINATION, APRIL 2018
Computer Science
Allied MICROPROCESSORS AND INTERFACING
(CBCS 2011 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
1. Draw the flag register configuration 8086 Microprocessor.
2. What are the functions of wait state.
3. What are the functions of XCHG Instruction?
4. Write the operation of MOV BL, CL Instruction and draw
the op code format of 8086 Microprocessor.
5. Write the basic principle of interfacing memory with 8088
microprocessor.
6. Draw the circuit diagram for interfacing 7 segment
display 8088 microprocessor.
7. What are the functions of 8272 Floppy disk controller?
8. What are the functions of character counter of 8275 CRT
Controller?
9. Draw the register set of 80286 Microprocessor.
10. Write the technical parameters of 80386 Microprocessor.
Sub. Code
1BCESA2
AFC-10726
2
WK16
Part B x 5 25)
Answer all questions, choosing either or
11. Explain the status lines of 8086 Microprocessor.
Or
Compare the 8086 and 8088 Microprocessor.
12. Explain the addressing modes of 8088
Microprocessor.
Or
Explain the stack related instructions of 8088
Microprocessor.
13. Describe the 8257 (DMAC) Controller.
Or
Describe the 8284 clock generator.
14. Explain the interfacing techniques of Acoustic
couplers.
Or
How will you interface printers?
15. Explain the interrupts of 80286 Microprocessor.
Or
Explain the register organization of 80386
Microprocessor.
AFC-10726
3
WK16
Part C x 10 30)
Answer any three questions.
16. Explain the execution unit and Bus Interface unit of 8086
Microprocessor.
17. Explain the Arithmetic Instructions of 8088
Microprocessor.
18. Describe the 8251 (USART) controller.
19. Describe the Keyboard Interfacing.
20. Describe the Signal describtions of 80386 Microprocessor.
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