CS401-Midterm
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After the execution of instruction “RET”
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Which bit of the attributes byte represents the red component of background color ?
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The maximum parameters a subroutine can receive (with the help of registers) are
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The iAPX88 processor supports ___________ modes of memory access.
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In STOS instruction, the implied source will always be in
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Only instructions allow moving data from memory to memory.
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“mov byte [num1],5” is _______ instruction.
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MOV instruction transfers a byte or word from which of the following source location.
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All the addressing mechanisms in iAPX88 return a number called _____________ address.
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One screen location corresponds to a
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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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To transfer control back the RET instruction take
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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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which bit sets the character "blinking" on the screen?
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When an item is pushed on the decrementing stack, the top of the stack is
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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
18 / 50
assembly the CX register is used normally as a ______________register.
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REP will always
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mov ax,5 has
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8088 is a 16bit processor with its accumulator and all registers of __________.
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one Only ___________ instructions allow moving data from memory to memory.
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one DIV instruction has
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CMPS instruction subtracts the source location to the destination location. Destination location always lies in
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The basic function of SCAS instruction is to
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After the execution of STOSW the CX will be
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_________ is one of the reasons due to which string instructions are used in 8088
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Left-Shift-Operation the left most bit _______
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The iAPX888 architecture consists of _______ register.
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The routine that executes in response to an INT instruction is called
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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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If the direction of the processing of a string is from higher addresses towards lower addresses then
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Which bit of the attributes byte represents the blue component of foreground color
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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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A 32 Bit processor has accumulator of ---------
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| 0 |--›| 1 | 1 | 0 | 1 | 0 | 0 | 0 | --›| C | is a example of ______
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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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Each screen location corresponds to a word, the lower byte of this word contains ____
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Assembly language is:
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“mov byte [num1], 5” is _________ instruction.
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The second byte in the word designated for screen location holds
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If we want to divide a signed number by 2, this operation can better be accomplished by
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JC and JNC test the ____________ flag.
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