CS401-Midterm
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After the execution of instruction “RET 2”
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JC and JNC test the ____________ flag.
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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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CMPS instruction subtracts the source location to the destination location. Destination location always lies in
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allow changing specific processor behaviors and are used to play with it.
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Which bit of the attributes byte represents the blue component of background color ?
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Left-Shift-Operation the left most bit _______
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To transfer control back the RET instruction take
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one Only ___________ instructions allow moving data from memory to memory.
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“mov byte [num1],5” is _______ instruction.
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In the word designated for one screen location, the higher address contains
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Regarding assembler, which statement is true:
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A 32 Bit processor has accumulator of ---------
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The execution of the instruction “mov word [ES: DI], 0x0720”
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_______ register holds the address of next instruction is to be executed
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Which bit of the attributes byte represents the red component of background color ?
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The physical address of the stack is obtained by
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Which is the unidirectional bus ?
Control Bus
(II) Data Bus
(III) Address Bus
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The prevalent convention in most high level languages is stack clearing by the
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“mov byte [num1], 5” is _________ instruction.
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In STOSB instruction, when DF is Set, SI is
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When the operand of DIV instruction is of 16 bits then implied dividend will be of
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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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To convert any digit to its ASCII representation
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REP will always
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One screen location corresponds to a
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In the instruction MOV AX, 5 the number of operands are
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In assembly the CX register is used normally as a ______________register.
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one DIV instruction has
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Which bit of the attributes byte represents the blue component of foreground color
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The second byte in the word designated for screen location holds
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Code Segment is associated to _______ register by default.
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“Far” jump is not position relative but is _______________
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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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All the addressing mechanisms iniAPX88 return a number called ______ address.
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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 the instruction “CMP AX,BX” the contents of
38 / 50
The routine that executes in response to an INT instruction is called
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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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Which mathematical operation is dominant during the execution of SCAS instruction
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After the execution of instruction “RET ”
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The extended ASCII has
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Assembly language is:
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After the execution of STOSW, the CX will be
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After the execution of “PUSH AX” statement
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Each screen location corresponds to a word, the lower byte of this word contains ____
50 / 50
In 8088 architecture, whenever an element is pushed on the stack
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