UNIT I
1. with a
neat functional diagram explain the architecture of 8085 microprocessor
2. Explain
the following addressing modes of 8086 microprocessor with examples
I. indexed
ii. Register relative
iii.
immediate iv. Register
1.a) With a neat block diagram explain the architecture of 8086
processor. (May-2013)
b) Explain the following instructions of 8086
i) TEST ii) CMP iii) XLAT
IV) CBW
2.a) What is the purpose of the Instruction Queue of BIU in
8086? Why is the size of
the queue limited to 6 Bytes?
(May-2013)
b) Explain addressing
modes of 8086 with an example. [5+10]
1.a) Discuss about the register
organization of 8086 processor.
b) Explain the minimum mode operation
of 8086 with the help of a neat
schematic diagram.
c) Explain the instruction formats of
8086. [16]
1. Explain different registers used in 8086 and its memory
segmentation. What are
the registers
used to access memory. [15]
2. Explain
different addressing modes in 8086. [15]
2. Explain
instruction format for 8086. [15]
1. Explain interrupts of 8086 its
minimum and maximum mode signals and common function signals. [15]
UNIT II
2. What are assembler directives and
micros? Consider one example and show how they are used? [15]
UNIT III
3. Explain A/D
and D/A conversion mechanism. [15]
4. Explain
8259 interrupt controller along with control registers. [15]
5. Explain the
interfacing of RS-232 to 8086. [15]
4. Explain the
interface of 8257 to 8086. [15]
5. Explain
IEEE-488 bus and its protocols. [15]
3. Show 8255
PPI in mode1 operation and interface to 8086. [15]
4. Explain the
interrupt structure of 8086. [15]
3. Interface
a 12 bit DAC to 8255 with an address map of OCOOH to OCO#H. write the
instruction sequence for generating a triangular wave with a maximum voltage of
+3V and minimum of -2V.
4. Explain
the difference between mask able and non-mask able interrupts with examples.
Discuss about the interrupt priorities of 8259 controller.
4.a) Explain how to interface Digital-to-Analog Converter (DAC) to 8086 processor.
Give the hardware and software for it.
b) Explain type 3 interrupt in 8086. [12+3] (May-2013)