Cochin University of Science and Techology (CUST) 2008-4th Sem B.Tech microprocessor architecture and systems design - Question Paper

B.TECH IV SEMESTER exam

MICROPROCESSOR ARCHITECTURE AND SYSTEMS DESIGN

1. a) List the 5 various addressing modes in 8085 with an example of every.
b) Differentiate 3 various kinds of registers in 8085. Support your ans with the
programming model of 8085.
c) describe DMA. define the DMA operation in 8085.
d) Distinguish the 2 various data transfer formats.
e) Design a circuitry to interface a stepper motor to 8085.
f) List and discuss the various modes of operation of 8279.
g) elaborate Risc and Cisc architecture?
h) explain the branch prediction technique.

2. a) With neat block diagram define the architecture of 8085.
b) describe 1. instruction cycle
2. machine cycle
3. T-state

OR

3. a) Analyze the instruction 2000IN, 8bit port adds and plot the status of various signals
while executing the instruction.
b) Illustrate how address bus and data bus is demultiplexed in 8085.

4. a) With neat block diagram discuss the block diagram of 8259-programmable interrupt controller.
b) Differentiate I/O mapped I/O memory mapped I/O techniques.

OR

5. a) Create an assembly language program in 8085 using subrouting to multiply 2
numbers in memory location 2500 and 2501 and store the outcome in 3000.
b) elaborate interrupts? Draw the interrupt structure of 8085.

6. a) With neat block diagram discuss the working of 8257 DMA controller.
b) Design a circuit to interface an ADC to 8085.

OR

7. a) With neat block diagram discuss the working of 8255 programmable peripheral
interface. Differentiate the various modes of operation with control word of every.

8. a) What is super scalar architecture? discuss.
b) What is register windowing?

OR

9. a) With a neat block diagram discuss the internal structure of the Pentium processor.
b) Compare the features of Pentium II, Pentium III and Pentium IV microprocessors.

Earning:   Approval pending.