CS401-Midterm
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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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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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one RET is executed, it recovers the values from
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| 0 |--›| 1 | 1 | 0 | 1 | 0 | 0 | 0 | --›| C | is a example of ______
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The basic function of SCAS instruction is to
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After the execution of “PUSH AX” statement
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When a 32 bit number is divided by a 16 bit number, the quotient will be stored in
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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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When the operand of DIV instruction is of 16 bits then implied dividend will be of
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MOV instruction transfers a byte or word from which of the following source location.
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Which bit of the attributes byte represents the red component of background color ?
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Stack is a ______ that behaves in a first in last out manner.
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one Only ___________ instructions allow moving data from memory to memory.
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An offset alone is not complete without
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The routine that executes in response to an INT instruction is called
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The execution of the instruction “mov word [ES: DI], 0x0720”
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The prevalent convention in most high level languages is stack clearing by the
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Code Segment is associated to _______ register by default.
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When a 32 bit number is divided by a 16 bit number, the quotient is of
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Execution of the instruction “mov word [ES : 0], 0x0741” will print
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“mov byte [num1], 5” is _________ instruction.
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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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The physical address of the stack is obtained by
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Which is the unidirectional bus ?
Control Bus
(II) Data Bus
(III) Address Bus
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Regarding assembler, which statement is true:
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29 / 50
The execution of the instruction “mov word [ES : 160], 0x1230” will print a character “0” on the screen at
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In the instruction MOV AX, 5 the number of operands are
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The first instruction of “COM” file must be at offset:
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_________ is one of the reasons due to which string instructions are used in 8088
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35 / 50
The second byte in the word designated for one screen location holds
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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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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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Which of the following options contain the set of instructions to open a window to the video memory?
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When an item is pushed on the decrementing stack, the top of the stack is
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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 execution of the instruction “mov word [ES: 0], 0x0741” will print “A” on the screen, color of the character will be
45 / 50
In STOS instruction, the implied source will always be in
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The maximum parameters a subroutine can receive (with the help of registers) are
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In the instruction “CMP AX,BX” the contents of
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In assembly the CX register is used normally as a ______________register.
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physical address of the stack is obtained by
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All the addressing mechanisms iniAPX88 return a number called ______ address.
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