CS401-Midterm
1 / 50
The iAPX888 architecture consists of _______ register.
2 / 50
After the execution of MOVS instruction which of the following registers are updated
3 / 50
In STOSB instruction, when DF is Set, SI is
4 / 50
In the Rotate Right Operation every bit moves one position to right and the bit dropped from the right is inserted at the left and:
5 / 50
To transfer control back the RET instruction take
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7 / 50
When an item is pushed on the decrementing stack, the top of the stack is
8 / 50
The routine that executes in response to an INT instruction is called
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The basic function of SCAS instruction is to
10 / 50
After the execution of instruction “RET ”
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Stack is a ______ that behaves in a first in last out manner.
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The first instruction of “COM” file must be at offset:
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Which bit of the attributes byte represents the red component of background color ?
14 / 50
assembly the CX register is used normally as a ______________register.
15 / 50
Left-Shift-Operation the left most bit _______
16 / 50
“mov byte [num1],5” is _______ instruction.
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8088 is a 16bit processor with its accumulator and all registers of __________.
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After the execution of REP instruction CX will be decremented then which of the following flags will be affected?
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20 / 50
The instruction ADC has________ Operand(s)
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Which of the following options contain the set of instructions to open a window to the video memory?
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If the direction of the processing of a string is from higher addresses towards lower addresses then
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Execution of the instruction “mov word [ES : 0], 0x0741” will print
24 / 50
Which is the unidirectional bus ?
Control Bus
(II) Data Bus
(III) Address Bus
25 / 50
To convert any digit to its ASCII representation
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The physical address of the stack is obtained by
27 / 50
In the word designated for one screen location, the higher address contains
28 / 50
REP will always
29 / 50
After execution of JCXZ instruction CX will changed with flag affect.
30 / 50
“mov byte [num1], 5” is _________ instruction.
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32 / 50
Assembly language is:
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34 / 50
Each screen location corresponds to a word, the lower byte of this word contains ____
35 / 50
After the execution of “PUSH AX” statement
36 / 50
When a 32 bit number is divided by a 16 bit number, the quotient is of
37 / 50
The iAPX88 processor supports ___________ modes of memory access.
38 / 50
In STOS instruction, the implied source will always be in
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41 / 50
Which bit of the attributes byte represents the blue component of background color ?
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After the execution of STOSW, the CX will be
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RETF will pop the offset in the
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45 / 50
Which mathematical operation is dominant during the execution of SCAS instruction
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CMPS instruction subtracts the source location to the destination location. Destination location always lies in
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After the execution of STOSW the CX will be
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49 / 50
In 8088 architecture, whenever an element is pushed on the stack
50 / 50
All the addressing mechanisms in iAPX88 return a number called _____________ address.
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