CS401-Midterm
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The second byte in the word designated for screen location holds
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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
3 / 50
Which bit of the attributes byte represents the blue component of foreground color
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The basic function of SCAS instruction is to
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In STOS instruction, the implied source will always 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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“Far” jump is not position relative but is _______________
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When an item is pushed on the decrementing stack, the top of the stack is
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mov ax,5 has
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After the execution of STOSW the CX will be
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allow changing specific processor behaviors and are used to play with it.
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Code Segment is associated to _______ register by default.
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Which bit of the attributes byte represents the red component of background color ?
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When a 32 bit number is divided by a 16 bit number, the quotient is of
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17 / 50
Stack is a ______ that behaves in a first in last out manner.
18 / 50
CMPS instruction subtracts the source location to the destination location. Destination location always lies in
19 / 50
To transfer control back the RET instruction take
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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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In the word designated for one screen location, the higher address contains
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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 a 16 bit number is divided by an 8 bit number, the quotient will be in
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To convert any digit to its ASCII representation
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27 / 50
The routine that executes in response to an INT instruction is called
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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
29 / 50
JC and JNC test the ____________ flag.
30 / 50
Assembly language is:
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one RET is executed, it recovers the values from
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which bit sets the character "blinking" on the screen?
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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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After execution of JCXZ instruction CX will changed with flag affect.
35 / 50
One screen location corresponds to a
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The first instruction of “COM” file must be at offset:
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In a video memory, each screen location corresponds to
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After the execution of instruction “RET 2”
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The maximum parameters a subroutine can receive (with the help of registers) are
40 / 50
After the execution of “PUSH AX” statement
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The instruction ADC has________ Operand(s)
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Which is the unidirectional bus ?
Control Bus
(II) Data Bus
(III) Address Bus
43 / 50
The iAPX88 processor supports ___________ modes of memory access.
44 / 50
The prevalent convention in most high level languages is stack clearing by the
45 / 50
Each screen location corresponds to a word, the lower byte of this word contains ____
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48 / 50
Which of the following options contain the set of instructions to open a window to the video memory?
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50 / 50
The clear screen operation initialize whole block of memory
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