CS401-Midterm
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In the instruction “CMP AX,BX” the contents of
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A 32 Bit processor has accumulator of ---------
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All the addressing mechanisms in iAPX88 return a number called _____________ address.
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_______ register holds the address of next instruction is to be executed
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Stack is a ______ that behaves in a first in last out manner.
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The prevalent convention in most high level languages is stack clearing by the
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After the execution of “PUSH AX” statement
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The routine that executes in response to an INT instruction is called
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After the execution of STOSW, the CX will be
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In assembly the CX register is used normally as a ______________register.
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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 : 0], 0x0741” will print character “A” on screen , background color of the screen will be
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mov ax,5 has
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“Far” jump is not position relative but is _______________
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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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Which bit of the attributes byte represents the blue component of foreground color
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CMPS instruction subtracts the source location to the destination location. Destination location always lies in
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MOV instruction transfers a byte or word from which of the following source location.
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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 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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The clear screen operation initialize whole block of memory
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One screen location corresponds to a
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The execution of the instruction “mov word [ES: DI], 0x0720”
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The first instruction of “COM” file must be at offset:
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All the addressing mechanisms iniAPX88 return a number called ______ address.
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To transfer control back the RET instruction take
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assembly the CX register is used normally as a ______________register.
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Which bit of the attributes byte represents the red component of background color ?
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When a very large number is divided by very small number so that the quotient is larger than the space provided, this is called
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After the execution of SAR instruction:
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RETF will pop the offset in the
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Only instructions allow moving data from memory to memory.
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In 8088 architecture, whenever an element is pushed on the stack
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Which mathematical operation is dominant during the execution of SCAS instruction
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To convert any digit to its ASCII representation
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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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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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REP will always
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The iAPX88 processor supports ___________ modes of memory access.
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Which bit of the attributes byte represents the blue component of background color ?
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ASCII stands for ____________. The screen is two dimensional space having:
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When an item is pushed on the decrementing stack, the top of the stack is
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JC and JNC test the ____________ flag.
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After execution of JCXZ instruction CX will changed with flag affect.
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After the execution of instruction “RET”
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