Damisetty Srinivasa Naidu's
DBS INSTITUTE OF TECHNOLOGY:: KAVALI
DESCRIPTVE QUESTIONS
YEAR:III-II ECE,EEE,CSE
SUB: MPMC
Unit-1
1.Draw a neat sketch and explain of architecture of 8086 microprocessor?(2014,2011)
2.Explain the instruction set of 8086 microprocessor (2014)
a) POP b) AAA c) CMP d) CWD e) ROL
3. a) Explain status flags and control flag register in detail in 8086 micro processor in
detail ?
(2014)
b) If data segment starts at a location of 1000H and data reference contains an address of
31H, find physical address ?
4. a) Discuss the register organization of 8086 micro processor?
b) Explain memory organization of 8086 microprocessor ?
(2014,2010)
(2014,2011)
5. a) Explain the evolution of microprocessors?
(2014)
b) Explain general bus operation of 8086 microprocessor
6. Write a short notes on procedures and macro's ?
7.Explain the instruction set of 8086 micro processor ?
a) DAA b) DIV c)TEST d)RCR e)CMPSW
8.Discuss the assembler directives of 8086 micro processor?
a) PROC b) DQ c)DUP d)EQU e)ENDS
(2013,2011)
(2014)
(2014)
b) List out the assembler directives of 8086, and explain them?(2011)
9.Explain with examples various addressing modes of 8086 instruction set with suitable
instruction format?
(2011,2010,2012)
10.what is an instruction? Explain various instruction formats with examples
Unit-2
1. Explain algorithm implementation of ?
a) IF-THEN-ELSE b) FOR loop
(2014 ,2011)
2.Develop an 8086 assembly language program to find the sum of numbers from 1 to 100.
(2011)
3. write an assembler program that adds two given 4-digit BCD numbers.(2011)
4.Write an ALP in 8086 to find the largest and smallest of a set of 8-bit numbers?(2012)
5.Write an ALP in 8086 to add two ASCII numbers?(2012)
6.Write an ALP to generate the FIBONOCCI series?(2012)
7.Write an ALP to in 8086 to find 1’s complement of a 16 bit hexadecimal number?(2012)
Unit-3
1.a) Explain maximum mode of operation in 8086 micro processor ?
(2014,2011)
b) Draw the timing diagram of minimum mode in 8086 micro processor in read and write
cycle?
2. Explain 8086 based minimum mode system with the help of neat diagram.(2011)
3.Draw and explain the 8086 timing diagram during the write operation(2011)
4.(a)Discuss the properties of DMA request inputs of 8257.(2011)
(b).Bring out the difference between static and dynamic Ram.(2011)
5.Explain the Programmed I/O and Interrupt driven I/O in detail?(2012)
6.Describe the function of the pins of 8086 maximam mode of operation?(2012)
7.Why do we prefer driven data transfer than Programmed I/O transfer ?show the complete
hardware design to resolve the multiple interrupts Based on priority?(2012)
Unit-4
1.Explain the architecture diagram of 8279 in detail ?
2.Explain in detail about the interfacing of A to D Converter ?
3.Discuss the interfacing of stepper motor in detail?
4.Draw 8255 internal architecture and explain each par of it.
5.Design a stepper motor controller and write an ALP to rotate shaft of a 4-phase stepper
motor
with 200 rotor teeth, for rotations through an angle of 1350 in 2 seconds
6. (a). Explain the different control word formats of 8255 PPI.
(b) Explain the analog to digital converter.
7.a.How do we connect RS-232C equipment to different devices?
b. Give the specification of RS-232C,RS-423A?
Unit-5
1.(a).Discuss the serial data transmission standards and their specifications.(2014)
2.Draw the internal architecture of USART 8251 and explain its different status, mode and
control formats in detail.(2014)
3.Explain briefly about(2010)
(a). Serial communication standards
(b). Prototyping
4.(a) Explain the general bus operation of IEEE- 488.(2010)
(b) Briefly explain trouble shooting.
5.a.Explain USB operation ? (2012)
b.Interface 8251 with 8086 at address 0A010H.Initialize it in asynchronous mode,with 6bit character size,baud rate factor 16,one start bits,odd parity enable?(2012)
6.Explain RS232C to TTL and TTL to RS232C conversion?
7.Write the sample program of serial data transfer?
Unit-6
1.(a) Explain the cascaded mode operation of 8259 with a neat block diagram(2011)
(b) Write about operational command words of 8259.(2011)
2. (a). With a neat sketch explain the internal architecture of 8259A?(2011,
(b). What is the need for DMA data transfer?
3.With a neat diagram explain the interfacing of 8259 with 8086?
4.Draw the block diagram of 8253 and explain about each block in detail?
5.Explain the operating modes of 8259?
6.With neat diagrams explain the five modes of operation of 8253 in detail?
7.Discuss about the programming model of 8259?
Unit-7
1.a) Write an assembly language program in 8051 micro controller to find 1's and 2's
complement of CCH (2014)
b) Explain immediate addressing modes, direct addressing mode with examples
2.Write short notes on the instruction set of 8051 micro controller (2014)
a) CJNE A, add, radd b)MOV DPTR ,#nn c) PUSH
3.a)Mention the difference between 8086 micro processor and 8051 micro controller
b) Explain PSW register in 8051 micro controller ?
4.a) write an assembly language program of factorial of 5 using 8051 micro controller?
b) Write a short notes on interrupt priority in 8051 micro controller ?
5. Explain key board interfacing on 8051 microcontroller ?(2014)
6. Explain architecture of 8051 micro controller with a neat sketch?(2014)
7. a) Write an assembly language program in 8051 microcontroller to find the subtraction of
20 and 10 ? (2014)
b) Explain control word of mode 1 of 8255 PPI with timing diagrams ?
8. Write short notes on the instruction set of 8051 microcontroller (2014)
a) ANL A, #n b) RRC A c)MUL d) POP
Unit-8
1.Explain about addressing modes and instruction set of MCS-96 family?(2010)
2.Explain the register and register architecture concept of MCS-96 family?(2011)
3.Explain the historical perspective in development of MCS-96 family? (2010)
4.Briefly explain the internal architecture of MCS-96?(2014)
5.Discuss about the process memory map of MCS-96?(2014)
6.List the applications of ARM cores?(2012)
7.What is the difference between interrupt requests(IRQ) and fast interrupt request
(FIQ) in ARM?(2012)
8.Give salient features about ARM microcontrollers?(2012)