CS401-Midterm
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Left-Shift-Operation the left most bit _______
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Which bit of the attributes byte represents the blue component of background color ?
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After the execution of STOSW, the CX will be
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While using STOBS, if DF=1 then
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_________ is one of the reasons due to which string instructions are used in 8088
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The execution of the instruction “mov word [ES : 160], 0x1230” will print a character “0” on the screen at
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In the instruction MOV AX, 5 the number of operands are
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one RET is executed, it recovers the values from
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After the execution of “PUSH AX” statement
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The iAPX888 architecture consists of _______ register.
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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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Which bit of the attributes byte represents the red component of background color ?
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All the addressing mechanisms in iAPX88 return a number called _____________ address.
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8088 is a 16bit processor with its accumulator and all registers of __________.
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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 routine that executes in response to an INT instruction is called
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The second byte in the word designated for screen location holds
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RETF will pop the offset in the
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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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To transfer control back the RET instruction take
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ASCII stands for ____________. The screen is two dimensional space having:
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The clear screen operation initialize whole block of memory
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All the addressing mechanisms iniAPX88 return a number called ______ address.
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In assembly the CX register is used normally as a ______________register.
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Each screen location corresponds to a word, the lower byte of this word contains ____
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When an item is pushed on the decrementing stack, the top of the stack is
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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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REP will always
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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 REP instruction CX will be decremented then which of the following flags will be affected?
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The physical address of the stack is obtained by
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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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The instruction ADC has________ Operand(s)
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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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The maximum parameters a subroutine can receive (with the help of registers) are
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one Only ___________ instructions allow moving data from memory to memory.
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Regarding assembler, which statement is true:
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one DIV instruction has
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In STOSB instruction, when DF is Set, SI is
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CMPS instruction subtracts the source location to the destination location. Destination location always lies in
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JC and JNC test the ____________ flag.
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After the execution of SAR instruction:
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In STOS instruction, the implied source will always be in
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