CS401-Midterm
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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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All the addressing mechanisms iniAPX88 return a number called ______ address.
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The basic function of SCAS instruction is to
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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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When the operand of DIV instruction is of 16 bits then implied dividend will be of
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After the execution of SAR instruction:
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Each screen location corresponds to a word, the lower byte of this word contains ____
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_______ register holds the address of next instruction is to be executed
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assembly the CX register is used normally as a ______________register.
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The extended ASCII has
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MOV instruction transfers a byte or word from which of the following source location.
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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 32 bit number is divided by a 16 bit number, the quotient will be stored in
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REP will always
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A 32 Bit processor has accumulator of ---------
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The prevalent convention in most high level languages is stack clearing by the
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The iAPX888 architecture consists of _______ register.
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The physical address of the stack is obtained by
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Assembly language is:
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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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To transfer control back the RET instruction take
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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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In 8088 architecture, whenever an element is pushed on the stack
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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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CMPS instruction subtracts the source location to the destination location. Destination location always lies in
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In string manipulation whenever an instruction needs a memory source, which of the following will hold the pointer to it?
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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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When a 32 bit number is divided by a 16 bit number, the quotient is of
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The maximum parameters a subroutine can receive (with the help of registers) are
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The first instruction of “COM” file must be at offset:
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In STOS instruction, the implied source will always be in
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An offset alone is not complete without
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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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After the execution of instruction “RET”
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When an item is pushed on the decrementing stack, the top of the stack is
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ASCII stands for ____________. The screen is two dimensional space having:
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Only instructions allow moving data from memory to memory.
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After the execution of “PUSH AX” statement
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“Far” jump is not position relative but is _______________
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41 / 50
Regarding assembler, which statement is true:
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The clear screen operation initialize whole block of memory
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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 iAPX88 processor supports ___________ modes of memory access.
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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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Which bit of the attributes byte represents the blue component of background color ?
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All the addressing mechanisms in iAPX88 return a number called _____________ address.
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| 0 |--›| 1 | 1 | 0 | 1 | 0 | 0 | 0 | --›| C | is a example of ______
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