CS401-Midterm
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To convert any digit to its ASCII representation
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A 32 Bit processor has accumulator of ---------
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When the operand of DIV instruction is of 16 bits then implied dividend will be of
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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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The routine that executes in response to an INT instruction is called
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All the addressing mechanisms in iAPX88 return a number called _____________ address.
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The maximum parameters a subroutine can receive (with the help of registers) are
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The iAPX888 architecture consists of _______ register.
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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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| 0 |--›| 1 | 1 | 0 | 1 | 0 | 0 | 0 | --›| C | is a example of ______
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After execution of JCXZ instruction CX will changed with flag affect.
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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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one Only ___________ instructions allow moving data from memory to memory.
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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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The extended ASCII has
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In the instruction MOV AX, 5 the number of operands are
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_______ register holds the address of next instruction is to be executed
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The prevalent convention in most high level languages is stack clearing by the
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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 instruction “RET 2”
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CMPS instruction subtracts the source location to the destination location. Destination location always lies in
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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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In STOSB instruction, when DF is Set, SI is
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The second byte in the word designated for screen location holds
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In assembly the CX register is used normally as a ______________register.
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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 will be stored in
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When a 32 bit number is divided by a 16 bit number, the quotient is of
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After the execution of STOSW the CX will be
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ASCII stands for ____________. The screen is two dimensional space having:
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The iAPX88 processor supports ___________ modes of memory access.
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Left-Shift-Operation the left most bit _______
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An offset alone is not complete without
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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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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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The execution of the instruction “mov word [ES : 160], 0x1230” will print a character “0” on the screen at
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The basic function of SCAS instruction is to
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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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Only instructions allow moving data from memory to memory.
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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: DI], 0x0720”
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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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In a video memory, each screen location corresponds to
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Assembly language is:
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Each screen location corresponds to a word, the lower byte of this word contains ____
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Which bit of the attributes byte represents the blue component of background color ?
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Which bit of the attributes byte represents the red component of background color ?
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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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After the execution of SAR instruction:
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