CS401-Midterm
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which bit sets the character "blinking" on the screen?
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Which bit of the attributes byte represents the red component of background color ?
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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 of the attributes byte represents the blue component of background color ?
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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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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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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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JC and JNC test the ____________ flag.
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Each screen location corresponds to a word, the lower byte of this word contains ____
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The execution of the instruction “mov word [ES: DI], 0x0720”
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The iAPX888 architecture consists of _______ register.
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one RET is executed, it recovers the values from
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“mov byte [num1], 5” is _________ instruction.
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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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To convert any digit to its ASCII representation
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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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An offset alone is not complete without
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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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Execution of the instruction “mov word [ES : 0], 0x0741” will print
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Which mathematical operation is dominant during the execution of SCAS instruction
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After the execution of STOSW the CX will be
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assembly the CX register is used normally as a ______________register.
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When an item is pushed on the decrementing stack, the top of the stack is
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After the execution of STOSW, the CX 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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The first instruction of “COM” file must be at offset:
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“Far” jump is not position relative but is _______________
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_________ is one of the reasons due to which string instructions are used in 8088
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After the execution of instruction “RET 2”
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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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In assembly the CX register is used normally as a ______________register.
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The basic function of SCAS instruction is to
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The iAPX88 processor supports ___________ modes of memory access.
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35 / 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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To transfer control back the RET instruction take
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mov ax,5 has
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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 prevalent convention in most high level languages is stack clearing by the
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one Only ___________ instructions allow moving data from memory to memory.
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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 clear screen operation initialize whole block of memory
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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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48 / 50
The routine that executes in response to an INT instruction is called
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ASCII stands for ____________. The screen is two dimensional space having:
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After the execution of SAR instruction:
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