CS401-Midterm
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After the execution of “PUSH AX” statement
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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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REP will always
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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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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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In the instruction MOV AX, 5 the number of operands are
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To transfer control back the RET instruction take
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A 32 Bit processor has accumulator of ---------
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The iAPX88 processor supports ___________ modes of memory access.
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To convert any digit to its ASCII representation
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After the execution of MOVS instruction which of the following registers are updated
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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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“mov byte [num1], 5” is _________ instruction.
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RETF will pop the offset in the
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allow changing specific processor behaviors and are used to play with it.
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Which is the unidirectional bus ?
Control Bus
(II) Data Bus
(III) Address Bus
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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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CMPS instruction subtracts the source location to the destination location. Destination location always lies in
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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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After the execution of STOSW the CX will be
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Each screen location corresponds to a word, the lower byte of this word contains ____
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After the execution of SAR instruction:
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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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physical address of the stack is obtained by
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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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If the direction of the processing of a string is from higher addresses towards lower addresses then
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“Far” jump is not position relative but is _______________
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In the instruction “CMP AX,BX” the contents of
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one Only ___________ instructions allow moving data from memory to memory.
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In STOS instruction, the implied source will always be 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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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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When a 16 bit number is divided by an 8 bit number, the quotient will be in
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In a video memory, each screen location corresponds to
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The iAPX888 architecture consists of _______ register.
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In the word designated for one screen location, the higher address contains
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The extended ASCII has
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Only instructions allow moving data from memory to memory.
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Code Segment is associated to _______ register by default.
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When an item is pushed on the decrementing stack, the top of the stack is
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_______ register holds the address of next instruction is to be executed
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In STOSB instruction, when DF is Set, SI is
50 / 50
The first instruction of “COM” file must be at offset:
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