CS401-Midterm
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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 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 instruction ADC has________ Operand(s)
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Which bit of the attributes byte represents the blue component of background color ?
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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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The routine that executes in response to an INT instruction is called
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mov ax,5 has
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| 0 |--›| 1 | 1 | 0 | 1 | 0 | 0 | 0 | --›| C | is a example of ______
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which bit sets the character "blinking" on the screen?
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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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All the addressing mechanisms in iAPX88 return a number called _____________ address.
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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 “CMP AX,BX” the contents of
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An offset alone is not complete without
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Regarding assembler, which statement is true:
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_________ is one of the reasons due to which string instructions are used in 8088
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Stack is a ______ that behaves in a first in last out manner.
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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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The extended ASCII has
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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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In a video memory, each screen location corresponds to
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Which bit of the attributes byte represents the blue component of foreground color
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_______ register holds the address of next instruction is to be executed
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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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After the execution of “PUSH AX” statement
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When an item is pushed on the decrementing stack, the top of the stack is
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The iAPX88 processor supports ___________ modes of memory access.
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After the execution of instruction “RET ”
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The prevalent convention in most high level languages is stack clearing by the
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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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Which mathematical operation is dominant during the execution of SCAS instruction
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one Only ___________ instructions allow moving data from memory to memory.
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Left-Shift-Operation the left most bit _______
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physical address of the stack is obtained by
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In 8088 architecture, whenever an element is pushed on the stack
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In assembly the CX register is used normally as a ______________register.
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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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When a 16 bit number is divided by an 8 bit number, the dividend will be in
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The basic function of SCAS instruction is to
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REP will always
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The first instruction of “COM” file must be at offset:
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If the address of memory location Num1 is 0117 and its content is 0005 then after execution of the instruction “ mov bx, Num1” bx will contain
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Assembly language is:
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Which bit of the attributes byte represents the red component of background color ?
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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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After the execution of STOSW, the CX will be
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After the execution of MOVS instruction which of the following registers are updated
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RETF will pop the offset in the
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