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a) Explain Cascading of 8259.
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a) Explain memory Read Cycle with the help of time diagram.
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a) Explain with ncat diagram working of 8253.
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b) Draw and explain the working of DMA controller
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a) Explain the working of 8255 and its operating modes.
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b) Explain the difference between memory mapped and selated I/O.
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b) Write an assembly language program to generate a time dclay of 1 ms.
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a) Draw and explain the block diagram of 8259.
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b) Write an assembly language program to convert 8 bit BCD numbers to its equivalent Binary number.
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a) Explain the working of RIM and SIM instructions.
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b) Write an assembly language program to arrange 100 numbers in ascending order.
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b) Draw block diagram of USART and explain the format of its mode word.
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Attempt all questions briefly in not more than fifty words: (a) Describe the difference between instruction MOV AX, 2437 and
MOVAX, [24371]. (b) Specify the four-control signal commonly used by the 8085.
(c) Explain the following instructions: DAA, STA (d) What is the importance of Flag register? When are the various flag
register set. (e) If the memory chip size in 256x1 bits, how many chips are
required to make up 1 K(1024) bytes of memory.
(f) Differentiate between Direct and Indirect addressing mode.
(g) What is the need of multiplexing address and dala bus in 8085? (h) Write the format of control word of 8255 . (i) Explain the difference between memory mapped 1/0 and
Peripheral mapped 1/O. (j) Why is the address bus uni-directional in 8085.
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c. Write a note on Pentium processor.
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c. Write a note on Pentium processor.
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b. Briefly explain about 80386 special registers.
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a. Write the salient features of 80486.
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b. Write a short note on PCI and USB.
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a. Explain maximum mode operation of 8086 with relevant block.
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'c. What is co-processor? Why it is called so? Give the significance of 8087 NDP.
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b.- Explain about various data types with respect to 8087.
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(b) Draw the block diagram of 8085 microprocessor and explain.
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(b) Compare isolated I/O and memory-mapped I/0.
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(a) Write a program to add two 2-digit BCD numbers.
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(b) List the advantage of multiprocessor system.
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(a) Explain the pin diagram of 8085 microprocessor and explain functional usage of each pin in detail.
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(b) Explain how 8251 is used for programmable communication interface?
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(a) Explain in detail the RS 232C interface.
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(b) Explain the advantage of using keyboard and display controller chips in microprocessor based system.
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(a) What are the different types of instructions of 8085 microprocessor?
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(b) Write short note on status flag.
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(a) Explain briefly about IN and OUT instructions with an example program and draw the timing diagram for both instructions.
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a. Explain about control register of 8087.
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(a) Brief about the interrupt interface circuit of 8259.
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(b) Compare 8085 and 8086 architecture.
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(a) Discuss various addressing modes of 8086 with examples.
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Answer briefly the following:- (a) Define Microcontrollers and give their applications.
(b) What are interrupts? (c) What are subroutines? Explain with an example. (d) What is the difference between shift and rotate instructions?
(e) Define stack and explain stack related instructions. (f) Compare CALL and PUSH instruction.
(g) What is the maximum memory size that can be addressed by 8086?
(h) Write short note on assemblers. (i) What is memory interfacing? (j) What is the use of branch instructions?
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c) Find the physical addresses of First and last location of a segment.The segment base is 1000h.
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b) List advantages of segmentation.
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a) Compare 8085, 8086 and 8088 microprocessors.
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b) With a neat block diagram explain the architecture of 8086.
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a) Describe the function of 8086 Flag register.
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Explain the concept of stack memory. How to initialize the stack in 8085 microprocessor.
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Explain the control word format for 8251. Specify mode word,command word and status word to transmit data with the TxC is 153.6KHz specifications,
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How does Microprocessor differentiate between data and Instruction?
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List the control signals of 8085 Microprocessor and explain their function.
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What are RAMs and ROMs? Why should both of these be used in an 8085 Microprocessor system?
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Explain the function of So Pin 8084 of microprocessor.
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Explain the function of SOD.
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Explain the function of RESET OUT.
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Explain the function of HLDA.
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Explain with schematic diagram how separate address and data signal can be generated from 8085 common address-data lines.
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List the status signal in 8085. Explain their function.
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Explain the control word format for 8251. Specity mode WU,command word and status word to transmit data with the Asyn 9600 baud rate specifications.
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Give the register organization of 8257 and discuss their use in
programming 8257.
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Explain fully nested mode operation ol 8259.
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Explain the descriptor table of 80386 Microprocessor.
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Discuss the register organization of 80386 Microprocessor.
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With neat Timing diagram explain memory read cycle and memory write cycle.
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Give the Pin diagram of 8086 Microprocessor and explain pipelining and Memory Segmentation.
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What do you mean by maximum mode of 8086?
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Give the status word format for 8255, when its Port A and Port Barein mode-1 operation and Port A act as Output Port, while Port B act
as input Port.
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Write a subroutine to clear PSW.
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a. Explain the following instruction function with an example: (i) LOOP (ii)IMUL (iii) XLAT (iv) AAM
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b. Brietly explain about 8255 control word format.
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a. What is interfacing? Explain about m x n matrix keyboard interface diagram along with program and flow chart.
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c. What are the steps involve during the interrupt response.
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b. Briefly explain about hardware and software interrupt applications.
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a. What is interrupt? Explain about dedicated interrupts with respect to 8086.
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c. List and briefly explain String instruction.
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b. List out two differences between MACRO and PROCEDURE.
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a. Write an ALP to perform reversing string along with flow chart.
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c. Write an ALP to perform GCD of two 16-bit integers and comments.
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b. What is assembler directive? Explain the following assembler directives: (i) ASSUME (ii) PUBLIC (iii) ALIGN
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What do you mean by PSW? State the application of PSW in programming.
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c. Explain about instruction execution time dependency parameters.
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b. Explain about segment registers and its advantages.
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a. With a neat diagram explain the internal architecture of 8086.
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Distinguish between Software and hardware interrupts.
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Distinguish between Maskable and non maskable interrupt.
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Distinguish between Vectored and non vectored interrupt.
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Explain the use of RIM and SIM instructions.
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Explain the control word format for 8251. Specity mode WU,command word and status word to transmit data with the Two stop bits and no parity check specifications.
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Explain the control word format for 8251. Specity mode WU,command word and status word to transmit data with theCharacter length 5 bits specifications.
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