CS401-Midterm
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The extended ASCII has
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In a video memory, each screen location corresponds to
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which bit sets the character "blinking" on the screen?
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| 0 |--›| 1 | 1 | 0 | 1 | 0 | 0 | 0 | --›| C | is a example of ______
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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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Which of the following options contain the set of instructions to open a window to the video memory?
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The routine that executes in response to an INT instruction is called
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To convert any digit to its ASCII representation
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Which bit of the attributes byte represents the blue component of background color ?
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When an item is pushed on the decrementing stack, the top of the stack is
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After the execution of instruction “RET”
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physical address of the stack is obtained by
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Code Segment is associated to _______ register by default.
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The second byte in the word designated for one screen location holds
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RETF will pop the offset in the
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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 REP instruction CX will be decremented then which of the following flags will be affected?
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The physical address of the stack is obtained by
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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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allow changing specific processor behaviors and are used to play with it.
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Which bit of the attributes byte represents the red component of background color ?
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ASCII stands for ____________. The screen is two dimensional space having:
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MOV instruction transfers a byte or word from which of the following source location.
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one DIV instruction has
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After the execution of “PUSH AX” statement
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After execution of JCXZ instruction CX will changed with flag affect.
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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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assembly the CX register is used normally as a ______________register.
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An offset alone is not complete without
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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 STOS instruction, the implied source will always be in
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After the execution of instruction “RET 2”
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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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In STOSB instruction, when DF is Set, SI is
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“Far” jump is not position relative but is _______________
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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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The basic function of SCAS instruction is to
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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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mov ax,5 has
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Each screen location corresponds to a word, the lower byte of this word contains ____
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To transfer control back the RET instruction take
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After the execution of instruction “RET ”
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The execution of the instruction “mov word [ES: DI], 0x0720”
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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 instruction ADC has________ Operand(s)
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