Tiêu đề 3160712 - MPI 2022S.pdf ✅

1 Seat No.: ________ Enrolment No.___________ GUJARAT TECHNOLOGICAL UNIVERSITY BE - SEMESTER–VI (NEW) EXAMINATION – SUMMER 2022 Subject Code:3160712 Date:03/06/2022 Subject Name:Microprocessor and Interfacing Time:10:30 AM TO 01:00 PM Total Marks: 70 Instructions: 1. Attempt all questions. 2. Make suitable assumptions wherever necessary. 3. Figures to the right indicate full marks. 4. Simple and non-programmable scientific calculators are allowed. MARKS Q.1 (a) Explain the flag register in 8085 microprocessor. 03 (b) Explain the following pins of 8085: (1) INTR (2) HOLD (3) SOD (4) READY 04 (c) Draw the block diagram of internal architecture of 8085 and explain its working. 07 Q.2 (a) Explain the following instructions 1. LHLD 2. RAL 3. DAA 03 (b) Explain demultiplexing of data and address bus of 8085. 04 (c) Explain the timing diagram of the instruction MOV C,A (4FH ) stored in location 2005H is being fetched. Define T-state, Machine cycle and Instruction cycle. 07 OR (c) Explain interfacing of 4KB EPROM with 8085 using decoder and gates as required. Assume starting address as 0000H. 07 Q.3 (a) Write a program to find 2’s complement of a number stored at 2050H and store result at 2055H. 03 (b) Compare memory mapped I/O and I/O mapped I/O. 04 (c) What are interrupts? List and explain the interrupt available in microprocessor 8085? 07 OR Q.3 (a) Explain the concept of stack. 03 (b) Explain arithmetic instructions of 8085. 04 (c) Write an 8085 program to copy block of ten numbers starting from location 2050h to locations starting from 3050h. 07 Q.4 (a) State the difference between PUSH and POP instruction. 03 (b) Explain the generation of control signals in 8085. 04 (c) Draw the internal block diagram of 8259A and explain the functions of each block in detail. 07 OR Q.4 (a) Explain Machine level language and Assembly level language with examples. 03 (b) Explain 8085 bus organization. 04 (c) Write a program to count continuously in hexadecimal from FFH to 00H in a system with a clock period of 0.5 μs. Use register C to set up 1 millisecond delay between each count and display the number at the output port1. 07