CS401-Midterm
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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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The prevalent convention in most high level languages is stack clearing by the
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REP will always
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Which bit of the attributes byte represents the red component of background color ?
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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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Stack is a ______ that behaves in a first in last out manner.
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The clear screen operation initialize whole block of memory
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JC and JNC test the ____________ flag.
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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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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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“Far” jump is not position relative but is _______________
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When a 32 bit number is divided by a 16 bit number, the quotient will be stored in
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After the execution of SAR instruction:
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The physical address of the stack is obtained by
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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
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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 8088 architecture, whenever an element is pushed on the stack
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allow changing specific processor behaviors and are used to play with it.
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The iAPX888 architecture consists of _______ register.
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After the execution of STOSW, the CX will be
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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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The iAPX88 processor supports ___________ modes of memory access.
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In the instruction MOV AX, 5 the number of operands are
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When an item is pushed on the decrementing stack, the top of the stack is
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one Only ___________ instructions allow moving data from memory to memory.
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CMPS instruction subtracts the source location to the destination location. Destination location always lies in
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Which is the unidirectional bus ?
Control Bus
(II) Data Bus
(III) Address Bus
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| 0 |--›| 1 | 1 | 0 | 1 | 0 | 0 | 0 | --›| C | is a example of ______
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In the instruction “CMP AX,BX” the contents of
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When two 16bit numbers are added the answer can be 17 bits long, this extra bit that won’t fit in the target register is placed in the where it can be used and tested
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To convert any digit to its ASCII representation
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In STOSB instruction, when DF is Set, SI is
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The routine that executes in response to an INT instruction is called
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An offset alone is not complete without
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After execution of JCXZ instruction CX will changed with flag affect.
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which bit sets the character "blinking" on the screen?
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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
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After the execution of MOVS instruction which of the following registers are updated
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When the operand of DIV instruction is of 16 bits then implied dividend will be of
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“mov byte [num1],5” is _______ instruction.
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In STOS instruction, the implied source will always be in
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If we want to divide a signed number by 2, this operation can better be accomplished by
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Execution of the instruction “mov word [ES : 0], 0x0741” will print
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