CS401-Midterm
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To transfer control back the RET instruction take
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Which bit of the attributes byte represents the blue component of background color ?
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The iAPX888 architecture consists of _______ 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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assembly the CX register is used normally as a ______________register.
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JC and JNC test the ____________ flag.
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RETF will pop the offset in the
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The second byte in the word designated for screen location holds
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In STOS instruction, the implied source will always be in
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Left-Shift-Operation the left most bit _______
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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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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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The prevalent convention in most high level languages is stack clearing by the
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The maximum parameters a subroutine can receive (with the help of registers) are
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mov ax,5 has
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To convert any digit to its ASCII representation
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In a video memory, each screen location corresponds to
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Which bit of the attributes byte represents the red component of background color ?
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After the execution of STOSW the CX will be
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REP will always
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After the execution of instruction “RET ”
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The iAPX88 processor supports ___________ modes of memory access.
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While using STOBS, if DF=1 then
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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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8088 is a 16bit processor with its accumulator and all registers of __________.
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The second byte in the word designated for one screen location holds
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After the execution of instruction “RET”
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MOV instruction transfers a byte or word from which of the following source location.
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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 2”
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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
32 / 50
Code Segment is associated to _______ register by default.
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After the execution of MOVS instruction which of the following registers are updated
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Each screen location corresponds to a word, the lower byte of this word contains ____
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The physical address of the stack is obtained by
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Execution of the instruction “mov word [ES : 0], 0x0741” will print
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The basic function of SCAS instruction is to
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In the word designated for one screen location, the higher address contains
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In the instruction MOV AX, 5 the number of operands are
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Which bit of the attributes byte represents the blue component of foreground color
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which bit sets the character "blinking" on the screen?
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In assembly the CX register is used normally as a ______________register.
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When a 32 bit number is divided by a 16 bit number, the quotient is of
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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: DI], 0x0720”
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When an item is pushed on the decrementing stack, the top of the stack is
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ASCII stands for ____________. The screen is two dimensional space having:
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A 32 Bit processor has accumulator of ---------
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50 / 50
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