Explain Register Organization in 80386 microprocessor. [5]
Assembly Language Programming
1.
Explain LXI and CMP instruction. Write an assembly language program for 8-bit microprocessor to divide 8 bit data stored in memory location 8050 by 8 bit data stored in 8051 and store the quotient in 8052 and remainder in 8053. [10]
2.
Write an assembly language program for 16 bit microprocessor to reverse the string 'This is Microprocessor' [5]
Basic Architecture
1.
Draw block diagram of 80286 microprocessor and explain its main four functional sub-units. Differentiate between Real Address Mode and Protected Virtual address mode. [10]
2.
What is mean by addressing mode? Explain all the addressing mode available in 8085 microprocessor. [5]
Basic I/O, Memory R/W and Interrupt Operations
1.
Differentiate between interrupt based I/O and DMA based I/O. Explain based DMA operation in brief. [5]
2.
What is the use of $AD_{7}-AD_{0}$ in 8085 microprocessor? Explain address de-multiplexing process in 8085 microprocessor with suitable diagram. [5]
3.
Draw a logic diagram showing generation of memory and I/O read/write control signals in 8085 microprocessor. [5]
Input/ Output Interfaces
1.
What are the different modes of parallel communication? Construct a control word for 8255 PPI for following configuration: .a) Port A and Port C_upper = mode 0 .b) Port B and Port C_lower = mode 0 c.) Port A and Port C_upper as input port d.) Port B and Port C_lower as output port [5]
Instruction Cycle
1.
Explain instruction cycle, machine cycle and T-states. Draw timing diagram of IN instruction with brief description. [10]
2.
Differentiate between PUSH and POP instruction with example illustrating the use of these instruction. [5]
Introduction
1.
Write short notes on (any two):a. Program Counter b. Von-Neumann Architecture c. Interrupt Masking [5]