CSJM University Kanpur B Tech Microprocessor Paper 2017

CSJM University Kanpur B Tech Microprocessor Paper 2017

B.tech Microprocessor Papers

UNIVERSITY INSTITUTE OF ENGINEERING & TECHNOLOGY

MID- SEMESTERENAMINATION -2017  CSJM KANPUR

ELECTRONICS & COMM. ENGG

SUB MICROPROCESSOR CODE: ECE-S 304/401 TIME 1:30

Note: Attempt all the questions. Attempt all sub-parts of a question at a place.

Q 1- Calculate, how many address lines and data lines are necessary to address 4 Megabytes of memory.

Q 2- Explain the status signals of the processor.

Q 3- Explain the working of DAA instruction with example.

Q 4- What is a stack top? Explain XTHL with an example.

Q 5- Calculate the execution time of the following program if the crystal frequency of an 8085 system is 4MHz

 

                 LXI D, AB05H

 

                 L1:LDAX D

 

                  DCR E

 

                   JNZ

Q 6-     LXI SP, 0010H

             LXI D, 0040H

             LXI B, 0030H

             LXI H, 0020H

             DAD SP

             SPHL

             XCHG

  L:        DCX D

             MOV A, H

             ORA E

             JNZ L

 After the execution of the following program, whether the loop will be executed or not. If executed then how many times this loop will be executed, Give the proper reason and necessary calculation.

Q 7- A block of 10 bytes is present in memory from location ABCD H.Write an ALP to arrange this data block in reverse order from the location DCBA H.

Q 8- 20 data bytes are stored from memory location 4000 H onwards. Write an ALP to find the even and odd numbers and if the numbers are even then store it from 5000 H onwards otherwise, store it from 6000H onwards.

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