CS401-Midterm
1 / 50
REP will always
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assembly the CX register is used normally as a ______________register.
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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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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 “PUSH AX” statement
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one DIV instruction has
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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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The extended ASCII has
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In a video memory, each screen location corresponds to
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The prevalent convention in most high level languages is stack clearing by the
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All the addressing mechanisms in iAPX88 return a number called _____________ address.
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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:
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Each screen location corresponds to a word, the lower byte of this word contains ____
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To convert any digit to its ASCII representation
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16 / 50
Stack is a ______ that behaves in a first in last out manner.
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The basic function of SCAS instruction is to
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One screen location corresponds to a
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20 / 50
“mov byte [num1], 5” is _________ instruction.
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Which bit of the attributes byte represents the red component of background color ?
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| 0 |--›| 1 | 1 | 0 | 1 | 0 | 0 | 0 | --›| C | is a example of ______
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decrements SP (the stack pointer) by two and then transfers a word from the source operand to the top of stack
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Which mathematical operation is dominant during the execution of SCAS instruction
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which bit sets the character "blinking" on the screen?
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“mov byte [num1],5” is _______ instruction.
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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 “A” on the screen, color of the character will be
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CMPS instruction subtracts the source location to the destination location. Destination location always lies in
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In the word designated for one screen location, the higher address contains
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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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In STOS instruction, the implied source will always be in
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Execution of the instruction “mov word [ES : 0], 0x0741” will print
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mov ax,5 has
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38 / 50
In 8088 architecture, whenever an element is pushed on the stack
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_______ register holds the address of next instruction is to be executed
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Only instructions allow moving data from memory to memory.
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After the execution of SAR instruction:
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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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In assembly the CX register is used normally as a ______________register.
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45 / 50
When an item is pushed on the decrementing stack, the top of the stack is
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The iAPX88 processor supports ___________ modes of memory access.
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The physical address of the stack is obtained by
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A 32 Bit processor has accumulator of ---------
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50 / 50
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