CS401-Midterm
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After the execution of “PUSH AX” statement
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The physical address of the stack is obtained by
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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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The clear screen operation initialize whole block of memory
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When an item is pushed on the decrementing stack, the top of the stack is
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One screen location corresponds to a
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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 of the following options contain the set of instructions to open a window to the video memory?
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To convert any digit to its ASCII representation
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The first instruction of “COM” file must be at offset:
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A 32 Bit processor has accumulator of ---------
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Regarding assembler, which statement is true:
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In the instruction “CMP AX,BX” the contents of
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After execution of JCXZ instruction CX will changed with flag affect.
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The extended ASCII has
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The second byte in the word designated for one screen location holds
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one RET is executed, it recovers the values from
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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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After the execution of instruction “RET”
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To transfer control back the RET instruction take
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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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Which bit of the attributes byte represents the red component of background color ?
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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 maximum parameters a subroutine can receive (with the help of registers) are
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The instruction ADC has________ Operand(s)
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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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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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one DIV instruction has
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Which mathematical operation is dominant during the execution of SCAS instruction
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All the addressing mechanisms in iAPX88 return a number called _____________ address.
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“Far” jump is not position relative but is _______________
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_________ is one of the reasons due to which string instructions are used in 8088
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REP will always
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Which bit of the attributes byte represents the blue component of background color ?
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_______ register holds the address of next instruction is to be executed
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After the execution of STOSW, the CX will be
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8088 is a 16bit processor with its accumulator and all registers of __________.
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In the instruction MOV AX, 5 the number of operands are
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“mov byte [num1],5” is _______ instruction.
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In a video memory, each screen location corresponds to
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The basic function of SCAS instruction is to
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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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Code Segment is associated to _______ register by default.
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The execution of the instruction “mov word [ES: DI], 0x0720”
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