This download link is referred from the post: GTU BE/B.Tech 2019 Winter Question Papers || Gujarat Technological University
Time: 10:30 AM TO 01:00 PM
Instructions:
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- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
Q.1
- Compare assembly level language with machine level language and high-level language. (03)
- Explain program counter and stack pointer. (04)
- Write a short note on Memory Classification of 8085 Microprocessor. (07)
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OR
- Draw the format for flag register in 8085 microprocessor. (03)
- Explain RIM and SIM Instructions. (04)
- Define T-state, machine cycle and instruction cycle. Draw the timing diagram for the instruction IN AA h. (07)
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Q.2
- Draw the internal architectural block diagram of 8085 microprocessor and explain each block and working of 8085 in detail. (07)
OR
- Explain PUSH and POP instructions in detail. (03)
- Explain how address/data lines ADO-AD7 are de-multiplexed in 8085. (04)
- Explain the different addressing Modes of 8085-with examples. (07)
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Q.3
- Enlist different types of interrupts available in 8085. (03)
- Write a program for BCD to 7-Segment LED conversion. (04)
- Draw and explain Interfacing of 4 x 4 Matrix keyboard with 8085. (07)
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OR
- Write instructions to load 16 bit number 1234H in register pair HL using LXI and MVI opcodes, and explain the difference between the two instructions. (03)
- Assume Register B holds 90H and the accumulator holds 09H. Illustrate the result of ORA B, XRA B, and CMA. (04)
- Explain the following instructions: (07)
- RAR
- DCR A
- XCHG
- DADH
- SUI01H
- IN AAh
- JNC 2020h
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Q.4
- Specify the contents of accumulator and flag CY when the following instructions are executed. (03)
- MVI A, C5H
- ORA A
- RAL
- RRC
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OR
- Write two 8-bit nos. are stored in memory locations 1040H and 1041H respectively. Write (07) instructions to add these two 16-bit nos., and place the sum in memory locations 1050H and 1051H.
- Write a program to generate a rectangular wave with a 200µsec on-period and a 400µsec off-period. (Use 8085 microprocessor) (07)
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Q.5
- Explain functions of 8255A based on modes. (03)
- Explain any two working modes of IC 8254-Programmable interval timer. (04)
- Write a short note on Programmable Interrupt Controller 8259A. (07)
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OR
- Enlist different types of ADC and DAC. (03)
- Explain Serial Communication Protocols (RS-232). (04)
- Explain Transmit serial message using 8251. (07)
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This download link is referred from the post: GTU BE/B.Tech 2019 Winter Question Papers || Gujarat Technological University
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