CS401-Midterm
1 / 50
After the execution of STOSW the CX will be
2 / 50
The routine that executes in response to an INT instruction is called
3 / 50
All the addressing mechanisms in iAPX88 return a number called _____________ address.
4 / 50
An offset alone is not complete without
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When a very large number is divided by very small number so that the quotient is larger than the space provided, this is called
6 / 50
In a video memory, each screen location corresponds to
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If the address of memory location Num1 is 0117 and its content is 0005 then after execution of the instruction “ mov bx, Num1” bx will contain
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9 / 50
Execution of the instruction “mov word [ES : 0], 0x0741” will print
10 / 50
mov ax,5 has
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In the instruction “CMP AX,BX” the contents of
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The second byte in the word designated for one screen location holds
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REP will always
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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
15 / 50
In assembly the CX register is used normally as a ______________register.
16 / 50
When an item is pushed on the decrementing stack, the top of the stack is
17 / 50
Which of the following options contain the set of instructions to open a window to the video memory?
18 / 50
If the direction of the processing of a string is from higher addresses towards lower addresses then
19 / 50
The physical address of the stack is obtained by
20 / 50
To transfer control back the RET instruction take
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After the execution of instruction “RET ”
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8088 is a 16bit processor with its accumulator and all registers of __________.
23 / 50
Which bit of the attributes byte represents the red component of background color ?
24 / 50
The extended ASCII has
25 / 50
The execution of the instruction “mov word [ES : 0], 0x0741” will print character “A” on screen , background color of the screen will be
26 / 50
The clear screen operation initialize whole block of memory
27 / 50
assembly the CX register is used normally as a ______________register.
28 / 50
JC and JNC test the ____________ flag.
29 / 50
After the execution of SAR instruction:
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To convert any digit to its ASCII representation
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“mov byte [num1],5” is _______ instruction.
32 / 50
The instruction ADC has________ Operand(s)
33 / 50
The iAPX888 architecture consists of _______ register.
34 / 50
After the execution of REP instruction CX will be decremented then which of the following flags will be affected?
35 / 50
“mov byte [num1], 5” is _________ instruction.
36 / 50
CMPS instruction subtracts the source location to the destination location. Destination location always lies in
37 / 50
The basic function of SCAS instruction is to
38 / 50
Each screen location corresponds to a word, the lower byte of this word contains ____
39 / 50
After the execution of instruction “RET”
40 / 50
one DIV instruction has
41 / 50
While using STOBS, if DF=1 then
42 / 50
One screen location corresponds to a
43 / 50
Assembly language is:
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When a 16 bit number is divided by an 8 bit number, the quotient will be in
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46 / 50
The first instruction of “COM” file must be at offset:
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48 / 50
Code Segment is associated to _______ register by default.
49 / 50
Which mathematical operation is dominant during the execution of SCAS instruction
50 / 50
physical address of the stack is obtained by
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