Write an assembly language program to find the greatest number in an array in using 8 bit microprocessor. (Assume appropriate array data and address where minimum array size of 20 should be considered.) [10]
2.
Write an ALP for 8086 to read a string and print it in the reverse order. [5]
Basic Architecture
1.
Draw block diagram of 80286 and explain its functional units. [10]
2.
Explain the addressing modes of 8086 microprocessor with examples. [5]
Basic I/O, Memory R/W and Interrupt Operations
1.
Write the process of address and data separation in De-multiplexed address/data bus in 8085 microprocessor. [5]
Input/ Output Interfaces
1.
Describe the working mechanism of DMA. Draw the internal architecture of the 8237 DMAC along with a timing diagram illustrating the process of DMA transfers. [10]
2.
Differentiate between synchronous and asynchronous serial communication. Show DTE-DTE and DTE-DCE connection according to RS-232 serial communication standard. [5]
Instruction Cycle
1.
Differentiate between PUSH and POP instruction with example illustrating the use of these instructions. [5]
2.
What is CALL operation? How does it differ with JUMP operation? [5]
3.
What is flag? Explain the flags that are present in 8085 microprocessor. [5]
4.
What is instruction set? Explain various kinds of instructions of 8086 microprocessor. [5]
Introduction
1.
Write short notes on: a. Harvard architecture b. GDT and LDT [5]