CS401-Midterm
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The routine that executes in response to an INT instruction is called
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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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In the instruction MOV AX, 5 the number of operands are
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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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Only instructions allow moving data from memory to memory.
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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 maximum parameters a subroutine can receive (with the help of registers) are
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Which bit of the attributes byte represents the red component of background color ?
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The second byte in the word designated for screen location holds
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“mov byte [num1],5” is _______ instruction.
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REP will always
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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 we want to divide a signed number by 2, this operation can better be accomplished by
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When two 16bit numbers are added the answer can be 17 bits long, this extra bit that won’t fit in the target register is placed in the where it can be used and tested
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The basic function of SCAS instruction is to
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After the execution of instruction “RET 2”
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The first instruction of “COM” file must be at offset:
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In assembly the CX register is used normally as a ______________register.
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In STOS instruction, the implied source will always be in
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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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The extended ASCII has
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one Only ___________ instructions allow moving data from memory to memory.
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After the execution of instruction “RET ”
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After the execution of “PUSH AX” statement
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one RET is executed, it recovers the values from
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The second byte in the word designated for one screen location holds
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After the execution of SAR instruction:
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assembly the CX register is used normally as a ______________register.
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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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Execution of the instruction “mov word [ES : 0], 0x0741” will print
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In 8088 architecture, whenever an element is pushed on the stack
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mov ax,5 has
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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 instruction ADC has________ Operand(s)
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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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Which bit of the attributes byte represents the blue component of foreground color
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A 32 Bit processor has accumulator of ---------
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To transfer control back the RET instruction take
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The iAPX888 architecture consists of _______ register.
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which bit sets the character "blinking" on the screen?
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“mov byte [num1], 5” is _________ instruction.
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Which mathematical operation is dominant during the execution of SCAS instruction
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While using STOBS, if DF=1 then
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