Question 1
(a)
Define
1)Microprocessor
2)Program Counter
3)Accumulator
3 Marks
(b)
Explain general purpose registers in 8085 Microprocessor
4 Marks
(c)
Draw and explain Pin diagram of 8085 Microprocessor
7 Marks
Gujarat Technological UniversitySummer 2026 Examination
GTU 3160712 Microprocessor and Interfacing (MPI) Summer 2026 Paper Solution & PDF
B.E. · Computer Engineering · Semester 6 · Subject Code: 3160712
Total Marks70 MarksExternal theory exam
Passing Marks23 Marks33% minimum cutoff
Exam Duration2.5 Hours10:30 AM – 1:00 PM
Paper Structure5 QuestionsWith internal OR choices
Question 2
(a)
Explain functions of following pins in 8085
1)TRAP
2)SID
3)HLDA
3 Marks
(b)
Explain Memory Write Machine Cycle of 8085 with suitable diagram
4 Marks
(c)
Elaborate different addressing modes in 8085 with suitable examples
7 Marks
OR OPTION
(c)
Draw the memory interface 4kB of EPROM with starting address from 0000H and 2kB of RAM with starting address followed by EPROM with 8085 Microprocessor
7 Marks
Question 3
(a)
Define
1)Assembler
2)Linker
3)Debugger
3 Marks
(b)
Describe any four data transfer instructions in 8085 with examples
4 Marks
(c)
Write an assembly language program to add two 16-bit numbers stored in memory with carry in 8085 simulator. Store result in the memory
7 Marks
OR OPTION
(a)
Specify byte size of each instruction
1)ADD B
2)MVI A,32H
3)CMA
3 Marks
(b)
Describe any four arithmetic instructions in 8085 with examples
4 Marks
(c)
Write an assembly language program in 8085 to arrange five 8-bit numbers in ascending order stored at memory location starting from 1000H
7 Marks
Question 4
(a)
Define Stack. Explain importance of Stack in 8085 Microprocessor
3 Marks
(b)
Differentiate the memory-mapped IO with the IO-mapped IO
4 Marks
(c)
Explain various operating modes of 8255A
7 Marks
OR OPTION
(a)
Explain following instructions:
1)RIM
2)SHLD
3)RRC
3 Marks
(b)
Explain working of CALL and RET instructions in 8085 microprocessor with example
4 Marks
(c)
Draw and explain architecture of 8259A
7 Marks
Question 5
(a)
Describe different types of segment registers in 8086 Microprocessor
3 Marks
(b)
Explain flag register in 80286 Microprocessor
4 Marks
(c)
Draw and explain BIU and EU in 8086 Microprocessor
7 Marks
OR OPTION
(a)
Differentiate 8086, 80286 and 80386
3 Marks
(b)
Explain operating modes of 8086 Microprocessor in detail
4 Marks
(c)
Draw and explain architecture of 80286 Microprocessor
7 Marks
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About this Examination Paper & Attribution
Official Gujarat Technological University (GTU) examination paper and step-by-step solutions for Microprocessor and Interfacing (MPI) (Summer 2026, B.E. · Computer Engineering, Sem 6). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.
Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.