Flat 50% off on all training & certification courses. Limited time offer Explore courses

Use these filters to find papers

User Image
  Question
0
List all machine cycles that 8085 uses. Which is the longest machine cycle. This question has 0 answers so far.
0

From which address the 8086 starts execution after reset?

 This question has 0 answers so far.
0
Explain the salient feature of a programmable communication interface. This question has 0 answers so far.
0
Draw and explain the interfacing circuit for interfacing an LED output meet with 8085 microprocessor using absolute decoding technique. This question has 0 answers so far.
0
How will you interface stepper motor with 8085? Explain the interfacing circuit and draw the flow-chart. This question has 0 answers so far.
0
Explain all the keyboard scan modes of 8279. This question has 0 answers so far.
0
Explain the block diagram of 8255 PPI and its control word. This question has 0 answers so far.
0
Explain the mode 1 operation of 8255 with the timming diagram or the handshake signals as well as the control signals used by both the input port mode and output port mode. This question has 0 answers so far.
0
Design the memory interface logic to interface 32Kbyte EPRUM chip.IC2 is also 271128, while IC3 is 62256, which is a 32K byte SRM chip. The EPROM chips are mapped to cover the lower half of the 64K byte address space while the SRM is mapped to the upper half. Also, ICI maps all even address and IC2 maps all odd addresses 00000002, 0004 etc. map to IC 1 and address 0001, 0003, 0005 etc map to IC2. This question has 0 answers so far.
0
Explain the interrupt process in 8085 and the difference between a non-maskable and a maskable interrupt by giving examples of each. This question has 0 answers so far.
0
List all instructions of 8085 that can be used to read and write data to memory Mapped I/O ports. This question has 0 answers so far.
0

Write an 8086 assembly routine to set the trap flag of 8086.

 This question has 0 answers so far.
0
Differentiate between The action of executing the HLT instruction and asserting the HOLD signal. This question has 0 answers so far.
0
Differentiate between The instruction RSTO and JMP 0000. This question has 0 answers so far.
0
Write a program in 8085 to account from 0 to 9 with a one-second delay between each count. This question has 0 answers so far.
0
Write a program in 8085 to add the following data bytes stored in memory locations starting from 2060H and display the sum. Data(h): 1A, 32, 4F, 12. This question has 0 answers so far.
0
Write an assembly language program to determine the number or zeros, positive and negative elements in a block of data. Assume that length of block is stored at memory location 2043H. This question has 0 answers so far.
0
Calculate the time delay required to complete the execution of the following instructions. Assume that the speed of processor is 2 MHz. LXI H.20FFH MVI A, OOH MVI B,FFH SUM:ORA B DCS H JC QUIT SUB:DCR B JNC SUM QUIT: RST-5 This question has 0 answers so far.
0
XRA A MV A 04H MVI B 05H LOOP: RRC DCX B JNZ LOOP END What will be contents of A after implementing the above set of instructions? Justify your answer. This question has 0 answers so far.
0
Explain, what is difference between a counter and time-delay? This question has 0 answers so far.
0
Write the sequence of events in the execution of CALL instruction. This question has 0 answers so far.
0

Write an 8086 assembly language program which scans which scans a string of 50 characters and loads the number of occurrences of character 'm' in memory location 'RESULT. 

 This question has 0 answers so far.
0

Explain the physical address formation in real address mode in 80286 

 This question has 0 answers so far.
0

Explain the internal architecture of 8253. Also discuss its mode 2 operation. 

 This question has 0 answers so far.
0

Write an assembly routine to initialize the 8259 in single level triggered mode, with cal address interval of 4, non buffered, non specially fully nested mode. Assume that 8259 is interfaced with 8286 at the address 074x H. 

 This question has 0 answers so far.
0

With the help of strobed data input and output cycle waveforms explain strobed I/O mode of 8255.

 This question has 0 answers so far.
0

Draw and discuss the memory write cycle timing diagram of 8086 in minimum mode of operation. 

 This question has 0 answers so far.
0

Explain maximum mode operation of 8086 in detail.

 This question has 0 answers so far.
0

Describe the steps an 8086 will take when it responds to an interrupt.

This question has 0 answers so far.
0

Explain the interrupt structure of 8086 including details like exceptions, hardware and software interrupts and interrupt vector table.

 This question has 0 answers so far.
0

Explain the following instructions of 8086:

(i) DIV (ii) AAD

 This question has 0 answers so far.
0

Giving examples explain various data addressing modes of 8086.

 This question has 0 answers so far.
0
Describe the various addressing mode of 8085 Assembly Language. This question has 0 answers so far.
0

Why assembler directives are also known as pseudo instructions?

Explain the following directives with proper examples.

(i) OFFSET (ii) ASSUME (iii) EVEN 

 This question has 0 answers so far.
0

Explain string manipulation instructions of 8086 assembly.


 This question has 0 answers so far.
0

Identify the data addressing modes in following instructions and evaluate the physical address if CS = 1040H, DS-2038H, ES = 16000H, starting address of LIST = 0024H, SI = 1234H, and BX = 10099H. 

(i) MOVE AX, offset LIST

(ii) MOV ES: WORDPTR (3085H), BX 

(iii) ADD CX, [SI][BX]

(iv) MOVE AX, LIST

This question has 0 answers so far.
0

Explain the register organization of 8086 and explain typical applications of each register. 

 This question has 0 answers so far.
0

Explain the concept of segmented memory clearly indicating its advantages. 

 This question has 0 answers so far.
0

Write an 8086 assembly code to generate a square wave of period 1 ms using 8253. Assume that the 8086 and 8253 run at 6 MHz and 1.5 MHz respectively.

 This question has 0 answers so far.
0

Explain the difference between:

(i) Status and control flags

(ii) Inter and intra segment jump

(iii) Test and AND instruction

(iv) I/O mapped and memory mapped I/O 

 This question has 0 answers so far.
0

Explain the function of the following pins of 8086.


 This question has 0 answers so far.
0

List seven data types supported by 80286

 This question has 0 answers so far.
0
Describe how an assembly language program is developed and debugged using system tools? Explain function of the SEG. This question has 0 answers so far.
0
Write assembly language program to find Whether given string is palindrome or not. This question has 0 answers so far.
0
Show the assembler directives and instructions to be used to initialize the interrupt pointer table location for a type o procedure, DIV-O-ERROR and type 2 procedure, POWER-FAIL. This question has 0 answers so far.
0
Explain the RO/GT signals. This question has 0 answers so far.
0
Explain the BHE signals. This question has 0 answers so far.
0
Explain the MN/MX signals. This question has 0 answers so far.
0
Explain the TEST signals. This question has 0 answers so far.
0
Draw programmers model for an 8086 microprocessor with proper labels. When is the queue of 8086 updated? This question has 0 answers so far.
0
Describe how an assembly language program is developed and debugged using system tools? Explain function of the RECORD. This question has 0 answers so far.
0
Describe how an assembly language program is developed and debugged using system tools? Explain function of the EVEN. This question has 0 answers so far.
0
Describe how an assembly language program is developed and debugged using system tools? Explain function of the ENDS. This question has 0 answers so far.
0
Write assembly language program to find Factorial of given number. This question has 0 answers so far.
0
Which instruction should be used to determine if bit 3 of register AHis high without changing its contents? This question has 0 answers so far.
0
Explain 8086 flag register. This question has 0 answers so far.
0
How does assembly language statement differ from directive statement? This question has 0 answers so far.
0
How will you compute physical address of memory using effective address? Explain with suitable example. This question has 0 answers so far.
0
Explain term "virtual memory". How much virtual and physical memory can be supported by 80286? This question has 0 answers so far.
0
What frequency transmit clock (TXC) is required by an 8251A in order for it to transmit data at 4800Bd with a baud rate factor of 16? This question has 0 answers so far.
0
An IRET instruction rather than a regular RET instruction is used at the end of each ISR. Why? This question has 0 answers so far.
0
Why are the port lines of programmable port devices automatically put in the input mode when device is first powered up or reset? This question has 0 answers so far.
0
(10010011)2 to gray code. This question has 0 answers so far.
0
Clear accumulator using single instruction in four different ways. This question has 0 answers so far.
0
Explain the necessity of decoding when memory device is attached to a microprocessor? With neat diagram indicate how a simple NAND gate decoder is used to select a 2716 EPROM memory component for memory locations FF800H-FFFFFH. This question has 0 answers so far.
0
What is bus? What are different types of buses supported by 8085 How the processor sends and receives information from memory and 1/O devices? Explain. This question has 0 answers so far.
0
Draw the pin diagram of 8085 microprocessor and give the name on signals associated with timing and control circuit and explain. This question has 0 answers so far.
0
Which is the longest instruction and what is its significance? This question has 0 answers so far.
0
Name the addressing mode of the STAX 16 bit instructions. Justry your answer. This question has 0 answers so far.
0
Name the addressing mode of the ADD M instructions. Justry your answer. This question has 0 answers so far.
0
Name the addressing mode of the DAA instructions. Justry your answer. This question has 0 answers so far.
0
Name the addressing mode of the PUSH rp. instructions. Justry your answer. This question has 0 answers so far.
0
Draw the timing diagram of instruction XHTL. This question has 0 answers so far.
0
Convert (i) (10110110)gray to binary code This question has 0 answers so far.
0
How is 8251 interfaced with 8086? Explain. This question has 0 answers so far.
0
Discuss the major features of Pentium architecture. This question has 0 answers so far.
0
Briefly describe the function and control words of 8255, 8253, devices in the SDK-86 microcomputer system. This question has 0 answers so far.
0
Differentiate between minimum and maximum mode of 8086 operation. This question has 0 answers so far.
0
List down major steps to trouble shoot a microprocessor system. Write an 8086 routine to test the system RAM in addresses 00200H- 07FFFH. This question has 0 answers so far.
0
Explain 8086 bus activities during a write machine cycle along with suitable timing diagram. This question has 0 answers so far.
0
Briefly describe the condition(s) which cause the 8086 to perform each of the following type of interrupts: type 0, type 1, type 2, type 3 and type 4. This question has 0 answers so far.
0
Discuss the actions performed by 8086 micro processor in case of IDIV instructions. This question has 0 answers so far.
0
Discuss the actions performed by 8086 micro processor in case of ROL This question has 0 answers so far.