Rajiv Gandhi Proudyogiki Vishwavidyalaya 2007 B.E Electronics & Tele-Communication Engineering It IS Not recent but very importent so please ove it... - Question Paper

RGPV Dec 2003
1. (a) draw the functional block diagram of 8085 microprocessor. discuss every block in brief .
(b)What interrupt are available in 8085? discuss their operation

2. (a) write a program for 8085 microprocessor to :
(1) clear the accumulator
(2) Add 47H
(3) Subtract 92H
(4) ADD 64H
Display the outcome after subtracting 92H and adding 64 H.specify the outcome you would expect at the output port.
(b)write an assembly language program for 8085 microprocessor to transfer sixteen byte of data stored in the memory locations at XX50H to XX5FH to new memory location starting at XX70H in reverse order.

3. (a) explain the role of different flag of 8086.
(b)Write a program in 8086 assembly language to divide 2 eight bit binary numbers.

4. (a)explain 8155 I/O ports in handshake mode.
(b)Describe the working of 8255 in BSR and I/O modes.

5. (a) discuss the process of the direct memory access (DMA) and the function of different
element of the 8257.
(b)Draw the complete block diagram of 8755 and discuss in detail the I/O part .

6. (a) elaborate RS232 serial port standard ? discuss
(b)Draw and discuss the expanded block diagram of transmitter and receiver part of 8521 VSART (programmable communication interface).

7. (a)what are the important points to be considered in memory interfacing. discuss.
(b)Explain the function of logic Analyzer.

8. Write short notes on any 2 of the subsequent :
(1) Bus structure of 8085
(2) Subroutine call and return
(3) Addressing modes of 8085
(4) 8254 Timer
(5) Interfacing printers

Earning:   Approval pending.