CS401-Midterm
1 / 50
MOV instruction transfers a byte or word from which of the following source location.
2 / 50
Which mathematical operation is dominant during the execution of SCAS instruction
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The basic function of SCAS instruction is to
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After the execution of STOSW, the CX will be
5 / 50
In STOS instruction, the implied source will always be in
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To transfer control back the RET instruction take
7 / 50
The second byte in the word designated for screen location holds
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Execution of the instruction “mov word [ES : 0], 0x0741” will print
9 / 50
To convert any digit to its ASCII representation
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After the execution of STOSW the CX will be
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A 32 Bit processor has accumulator of ---------
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When an item is pushed on the decrementing stack, the top of the stack is
13 / 50
When a 16 bit number is divided by an 8 bit number, the quotient will be in
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After the execution of REP instruction CX will be decremented then which of the following flags will be affected?
15 / 50
mov ax,5 has
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When a 16 bit number is divided by an 8 bit number, the dividend will be in
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18 / 50
Assembly language is:
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Which bit of the attributes byte represents the blue component of background color ?
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The execution of the instruction “mov word [ES : 160], 0x1230” will print a character “0” on the screen at
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22 / 50
if ax contains decimal -2 and BX contains decimal 2 then after the execution of instructions: CMP AX, BX ,JA label
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physical address of the stack is obtained by
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“mov byte [num1],5” is _______ instruction.
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Only instructions allow moving data from memory to memory.
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Each screen location corresponds to a word, the lower byte of this word contains ____
27 / 50
All the addressing mechanisms iniAPX88 return a number called ______ address.
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29 / 50
After the execution of “PUSH AX” statement
30 / 50
When a 32 bit number is divided by a 16 bit number, the quotient is of
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“mov byte [num1], 5” is _________ instruction.
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33 / 50
In assembly the CX register is used normally as a ______________register.
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The maximum parameters a subroutine can receive (with the help of registers) are
35 / 50
one DIV instruction has
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The first instruction of “COM” file must be at offset:
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The execution of the instruction “mov word [ES : 0], 0x0741” will print character “A” on screen, color of the character will be
38 / 50
CMPS instruction subtracts the source location to the destination location. Destination location always lies in
39 / 50
8088 is a 16bit processor with its accumulator and all registers of __________.
40 / 50
41 / 50
Which of the following options contain the set of instructions to open a window to the video memory?
42 / 50
After the execution of instruction “RET ”
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One screen location corresponds to a
44 / 50
In STOSB instruction, when DF is Set, SI is
45 / 50
The routine that executes in response to an INT instruction is called
46 / 50
In a video memory, each screen location corresponds to
47 / 50
In 8088 architecture, whenever an element is pushed on the stack
48 / 50
After the execution of SAR instruction:
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After the execution of instruction “RET”
50 / 50
After execution of JCXZ instruction CX will changed with flag affect.
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