University of Mumbai 2004 B.E Electronics & Tele-Communication Engineering ELEMENTS OF MICROPROCESSORS - Question Paper

ELEMENTS OF MICROPROCESSORS DEC 2004
1. (a) With the help of a neat diagram discuss the 8086 architecture and
provide the function of the control flags. (12)
(b) discuss how the performance of 8086 is enhanced when compared
to 8085 microprocessor. (8)
2. Explain the software and hardware interrupt of 8085. discuss the relevant instructions in details. (20)
3. (a) discuss the architecture and organization of 8255 PPI. discuss the
BSR mode of operation. (12)
(b) Using I/O mapped I/O technique, show an 8085-8255 interface
with port A as an input port and port B as an output port. (8)
4. (a) discuss the 8086-8087 interface, with labelled schematic and
clarify its operation with emphasis on RQ/GT signals. (12)
(b) elaborate the data kinds supported by 8087? (8)
5. (a) discuss the minimum mode configuration of 8086 microprocessor. (12)
(b) discuss memory segmentation in 8086 microprocessor. What is
logical and physical address? (8)
6. (a) discuss the various functional blocks of 8259 PIC. (12)
(b) elaborate the various steps that take place when an interrupt occur
in 8086? (8)
7. Write short notes on:- (20)
(a) Addressing modes of 8086.
(b) Machine cycles of 8085.

Earning:   Approval pending.