Explain the concept of segmented memory in 8086.

What is the significance of READY signal in 8085?

What is the difference between JUMP and LOOP instructions in 8086

What are the assembler directives?

Draw and discuss the status wont format of 8251.

Explain the functions of S1M and RIM instructions in detail.

Draw and discuss the mode and status register of 8257 DMA Controller.

3. Explain the functions of the following assembler directives/operators with suitable examples:

DW

OFFSET

PROC

ORG

4. Explain the functions of the following pins of 8086

RQ/GTo

NM1

DEN

QSo, QS1

5. What is the difference between hardware and software interrupts? Explain the term nested interrupt with a suitable example.

6. Write an 8085 assembly language program to find the smallest number in a given data array of 10 numbers. The data memory starts from the location 2500H. The smallest data should be stored at location 2600H.

Interface 6116 (2k x CMOS R/W memory with 8085. The address range should begin at 2000H.

Explain semiconductor memory and discuss its classification in detail.

Draw the timing diagram of the instruction OUT 05H.

Explain the significance of the following signals in 8251

CTS

TXEMPTY

Part A of the 8255A is set up in mode and the status word is read as 18H. Is there an error in the status word? Explain.

List the major components of the 8259A interrupt controller and explain their functions.

10. Write short notes on any two of the following:

Minimum and Maximum mode of 8086

Cycle stealing and Burst mode of DMA

Salient features of 80386

Interfacing of D/A converters with 8085