REVISION TEST – II
Subject:
EC2304-Microprocessors and Microcontroller Class: III - ECE
1.
What is the purpose of
the following comments in 8086 a) AAD
b)RCL
2.
Explain the string
compare instruction with syntax and suitable example
3.
What
is meant by short jump
4.
Write the ALP to
multiply two 16 bit unsigned numbers to provide a 32 bit result. Assume that
the two numbers are stored in CX and DX.
5.
Compare Call and Jump
instruction
6.
What are the 8086
instructions used for BCD arithmetic?
7.
What is PSW?
8.
List any four program
control instructions available in 8086
9.
How will carry and zero
flags reflect the result of the instruction CMP BX, CX?
10.
What is the macro? .When
is it used?
11.
What is segment override
prefix?. Give an example
12.
What happen in 8086 when
DEN=0 and DTR=1?
13.
What is the operation
performed by the instruction CBW. Give an example for its use
14.
Compare Sub and CMP
instruction in 8086
PART B
–
1.
Write an 8086 program
to convert BCD to Binary
2.
Write an ALP to Sort
the array of elements in ascending order.
3.
Write the ALP for 8086 to compute the average of n Numbers of byte stored in the memory
4.
Explain the relative addressing mode and
implied addressing mode with its syntax. Use an example
5. Explain the assembler
directives ASSUME, EQU, DW, and EVEN with suitable Examples
6. Explain the following instruction with suitable example and
syntax.LEA, LDS,LAHF, IMUL,,NEG,TEST, SAR, JA, JBE,Jmp,
