IMP FOR GTU EXAM S-2015
DATE: 22/04/2015
1. Draw & Explain Pin Diagram Of 8085
2. Draw & Explain Block Diagram Of 8085.
3. Addressing Mode & Classification of Instruction.
4. Draw & Explain Bus Structure
5. Explain Flag Register, SP & PC.
6. Draw & Explain interfacing of ____B Memory With 8085.
7. Compare Memory Mapped Io& Io Mapped Io.
8. Draw & Explain Demultiplexing Of Address & Data Bus.
9. Draw & Explain Generation Of Control Signal
10.Explain Instruction: RIM, SIM, ROTATE, JUMP, CALL,RET, DAA,
DAD, LHLD, P US H, POP
11.Timing Diagram Of:
1) STA
2) LDA
3) IN
4) OUT
5) MOV Rd, Rs.
6) Opcode Fetch operation
7) Memory Read operation.
8) Memory Wright operation.
9) I/O Read operation.
10) I/O Wright Machine Cycle.
12.What is A-to-D conversion? How does it happen? Explain with example.
13.8255:
1)
2)
3)
4)
Draw and explain the functional block diagram
Discuss the main applications
Explain various operating modes of 8255A.
Give the control word
14.8254:
1) Explain block diagram the function
2) Discuss different working modes of IC 8254
3) Explain control word format
15.8259:
1) Working of IC 8259A
2) Explain the block diagram of 8259 Programmable interrupt controller. What
are its features? Explain the interrupt operation of 8259 in the simplest
format.
3) Explain the initialization of 8259 interrupt controller.
16.8237:
1. Explain how the 8237 DMA controller transfers 64K bytes of data per
channel.
2. Explain the functions of DMA controller with proper diagrams.
3. What do you mean by direct memory transfer? Explain 8257
DMA controller with block diagram.
4. Draw and explain the logical block diagram of the 8253 with functions of
each block. ( 23/05/2012)
17.What is USART? Draw the functional block diagram of 8251 and explain
function of each block.
18.Compare serial and parallel data transfer. (25/11/2011)
19.Write short note on Serial I/O lines, SOD and SID (25/11/2011)
20.Write an assembly language program generate time delay of __msec.
Assume system freq. =__MHz
21.8086:
1. Architecture
2. Pin diagram
3. Mini and maxi mode
4. Memory segmentation
22.All Programs of Practical File.