CS401-Midterm
1 / 50
To transfer control back the RET instruction take
2 / 50
After the execution of REP instruction CX will be decremented then which of the following flags will be affected?
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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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The physical address of the stack is obtained by
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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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In string manipulation whenever an instruction needs a memory source, which of the following will hold the pointer to it?
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One screen location corresponds to a
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The execution of the instruction “mov word [ES: DI], 0x0720”
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All the addressing mechanisms in iAPX88 return a number called _____________ address.
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Regarding assembler, which statement is true:
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In assembly the CX register is used normally as a ______________register.
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An offset alone is not complete without
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After the execution of MOVS instruction which of the following registers are updated
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The execution of the instruction “mov word [ES : 0], 0x0741” will print character “A” on screen , background color of the screen will be
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To convert any digit to its ASCII representation
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17 / 50
_________ is one of the reasons due to which string instructions are used in 8088
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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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After the execution of STOSW, the CX will be
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When the operand of DIV instruction is of 16 bits then implied dividend will be of
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The basic function of SCAS instruction is to
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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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which bit sets the character "blinking" on the screen?
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When a 32 bit number is divided by a 16 bit number, the quotient is of
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JC and JNC test the ____________ flag.
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Assembly language is:
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28 / 50
MOV instruction transfers a byte or word from which of the following source location.
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The routine that executes in response to an INT instruction is called
30 / 50
In the instruction MOV AX, 5 the number of operands are
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The clear screen operation initialize whole block of memory
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The instruction ADC has________ Operand(s)
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The iAPX88 processor supports ___________ modes of memory access.
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35 / 50
After the execution of “PUSH AX” statement
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The iAPX888 architecture consists of _______ register.
37 / 50
mov ax,5 has
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Each screen location corresponds to a word, the lower byte of this word contains ____
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40 / 50
After the execution of STOSW the CX will be
41 / 50
“mov byte [num1], 5” is _________ instruction.
42 / 50
The execution of the instruction “mov word [ES: 0], 0x0741” will print “A” on the screen, color of the character will be
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44 / 50
physical address of the stack is obtained by
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Left-Shift-Operation the left most bit _______
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Which bit of the attributes byte represents the blue component of foreground color
47 / 50
The extended ASCII has
48 / 50
The second byte in the word designated for one screen location holds
49 / 50
one RET is executed, it recovers the values from
50 / 50
When a 32 bit number is divided by a 16 bit number, the quotient will be stored in
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