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CS401 Current Midterm Paper Fall 2013 File 3



by HardRock on December 20, 2013 at 8:20pm
90% mcqs were from past papers..
how many operands in ADC?
ans: 3,1, 2, 4
how 32 bit word is defined?
ans define double, double word, define quad, define byte
if 2 16bit operands multiplied the result will be ________
ans 32bit, 16bit, 24bit, 64bit
if div by zero occurs then ____??
ans div by zero int
for software int we write ____
ans INT
after push instruction SP gets ???
incremented by 2
decremented by 2
SP is associated by default with ???
CS
DS
SS
ES
which math function used in cmp
addition
muktiply
subtract
division




subjective were as follow
what will happen when instruction mov [es:di], DX ....2marks
What does RET n means and what happen when it executes... 2marks
write a program to using rotate to swap AH with AL. AH=0xDD and AL=0xAC
it should transform in AH=0xAC and AL=0xDD...3marks
if used div instruction used div ax, bx what will happen if AX=0x0007h DX=0x0000 and BX=0x0002 and
B DX=0x0000h AX=0xFFFFh and BX=0x0010...... 3 marks
Which instruction is most use in screen rolling function and how screen rolling works...5 or 3 marks
write a program which does extended multiplication between 32bit operands..5marks
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