CS401-Midterm
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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 character “A” on screen , background color of the screen will be
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_________ is one of the reasons due to which string instructions are used in 8088
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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 REP instruction CX will be decremented then which of the following flags will be affected?
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MOV instruction transfers a byte or word from which of the following source location.
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After the execution of instruction “RET ”
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In the instruction “CMP AX,BX” the contents of
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Execution of the instruction “mov word [ES : 0], 0x0741” will print
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The execution of the instruction “mov word [ES: DI], 0x0720”
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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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allow changing specific processor behaviors and are used to play with it.
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RETF will pop the offset in the
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While using STOBS, if DF=1 then
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A 32 Bit processor has accumulator of ---------
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After the execution of STOSW the CX will be
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The basic function of SCAS instruction is to
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mov ax,5 has
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To convert any digit to its ASCII representation
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One screen location corresponds to a
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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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The clear screen operation initialize whole block of memory
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The physical address of the stack is obtained by
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one Only ___________ instructions allow moving data from memory to memory.
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When the operand of DIV instruction is of 16 bits then implied dividend will be of
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All the addressing mechanisms iniAPX88 return a number called ______ address.
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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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Code Segment is associated to _______ register by default.
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Which is the unidirectional bus ?
Control Bus
(II) Data Bus
(III) Address Bus
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An offset alone is not complete without
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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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“Far” jump is not position relative but is _______________
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Only instructions allow moving data from memory to memory.
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ASCII stands for ____________. The screen is two dimensional space having:
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The iAPX888 architecture consists of _______ register.
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All the addressing mechanisms in iAPX88 return a number called _____________ address.
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In assembly the CX register is used normally as a ______________register.
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In a video memory, each screen location corresponds to
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In the instruction MOV AX, 5 the number of operands are
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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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CMPS instruction subtracts the source location to the destination location. Destination location always lies in
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After the execution of MOVS instruction which of the following registers are updated
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In string manipulation whenever an instruction needs a memory source, which of the following will hold the pointer to it?
50 / 50
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