CS401-Midterm
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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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Left-Shift-Operation the left most bit _______
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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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To convert any digit to its ASCII representation
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Each screen location corresponds to a word, the lower byte of this word contains ____
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assembly the CX register is used normally as a ______________register.
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When a 16 bit number is divided by an 8 bit number, the dividend will be in
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After execution of JCXZ instruction CX will changed with flag affect.
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Code Segment is associated to _______ register by default.
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After the execution of STOSW the CX will be
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12 / 50
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 STOS instruction, the implied source will always be in
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While using STOBS, if DF=1 then
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An offset alone is not complete without
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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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MOV instruction transfers a byte or word from which of the following source location.
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Only instructions allow moving data from memory to memory.
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In assembly the CX register is used normally as a ______________register.
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Which bit of the attributes byte represents the blue component of background color ?
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In the instruction “CMP AX,BX” the contents of
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After the execution of “PUSH AX” statement
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JC and JNC test the ____________ flag.
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REP will always
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Assembly language is:
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Which bit of the attributes byte represents the red component of background color ?
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“Far” jump is not position relative but is _______________
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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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After the execution of SAR instruction:
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“mov byte [num1],5” is _______ instruction.
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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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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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The physical address of the stack is obtained by
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The basic function of SCAS instruction is to
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37 / 50
All the addressing mechanisms in iAPX88 return a number called _____________ address.
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All the addressing mechanisms iniAPX88 return a number called ______ address.
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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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The iAPX88 processor supports ___________ modes of memory access.
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The iAPX888 architecture consists of _______ register.
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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 “A” on the screen, color of the character will be
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The second byte in the word designated for screen location holds
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47 / 50
Which is the unidirectional bus ?
Control Bus
(II) Data Bus
(III) Address Bus
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49 / 50
50 / 50
The routine that executes in response to an INT instruction is called
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