CS401-Midterm
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Which bit of the attributes byte represents the red component of background color ?
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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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When a 16 bit number is divided by an 8 bit number, the dividend will be in
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To convert any digit to its ASCII representation
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_________ is one of the reasons due to which string instructions are used in 8088
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one DIV instruction 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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If the direction of the processing of a string is from higher addresses towards lower addresses then
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The basic function of SCAS instruction is to
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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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The execution of the instruction “mov word [ES: DI], 0x0720”
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Execution of the instruction “mov word [ES : 0], 0x0741” will print
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After the execution of STOSW, the CX will be
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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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An offset alone is not complete without
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After the execution of instruction “RET 2”
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After the execution of SAR instruction:
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After the execution of “PUSH AX” statement
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Regarding assembler, which statement is true:
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“Far” jump is not position relative but is _______________
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When an item is pushed on the decrementing stack, the top of the stack is
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8088 is a 16bit processor with its accumulator and all registers of __________.
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assembly the CX register is used normally as a ______________register.
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27 / 50
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, color of the character will be
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30 / 50
Left-Shift-Operation the left most bit _______
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The iAPX88 processor supports ___________ modes of memory access.
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CMPS instruction subtracts the source location to the destination location. Destination location always lies in
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To transfer control back the RET instruction take
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In STOS instruction, the implied source will always be in
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Assembly language is:
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All the addressing mechanisms in iAPX88 return a number called _____________ address.
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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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41 / 50
When a 16 bit number is divided by an 8 bit number, the quotient will be in
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In 8088 architecture, whenever an element is pushed on the stack
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JC and JNC test the ____________ flag.
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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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The routine that executes in response to an INT instruction is called
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One screen location corresponds to a
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After the execution of instruction “RET ”
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After the execution of STOSW the CX will be
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50 / 50
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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