CS401-Midterm
1 / 50
Which of the following options contain the set of instructions to open a window to the video memory?
2 / 50
To convert any digit to its ASCII representation
3 / 50
While using STOBS, if DF=1 then
4 / 50
After the execution of instruction “RET”
5 / 50
The first instruction of “COM” file must be at offset:
6 / 50
“mov byte [num1], 5” is _________ instruction.
7 / 50
Which is the unidirectional bus ?
Control Bus
(II) Data Bus
(III) Address Bus
8 / 50
9 / 50
All the addressing mechanisms iniAPX88 return a number called ______ address.
10 / 50
In the instruction MOV AX, 5 the number of operands are
11 / 50
One screen location corresponds to a
12 / 50
one Only ___________ instructions allow moving data from memory to memory.
13 / 50
After the execution of instruction “RET ”
14 / 50
When an item is pushed on the decrementing stack, the top of the stack is
15 / 50
If the direction of the processing of a string is from higher addresses towards lower addresses then
16 / 50
In string manipulation whenever an instruction needs a memory source, which of the following will hold the pointer to it?
17 / 50
assembly the CX register is used normally as a ______________register.
18 / 50
allow changing specific processor behaviors and are used to play with it.
19 / 50
The iAPX888 architecture consists of _______ register.
20 / 50
In assembly the CX register is used normally as a ______________register.
21 / 50
8088 is a 16bit processor with its accumulator and all registers of __________.
22 / 50
REP will always
23 / 50
Which bit of the attributes byte represents the blue component of background color ?
24 / 50
25 / 50
Which bit of the attributes byte represents the red component of background color ?
26 / 50
Regarding assembler, which statement is true:
27 / 50
The execution of the instruction “mov word [ES: 0], 0x0741” will print “A” on the screen, color of the character will be
28 / 50
After the execution of STOSW, the CX will be
29 / 50
30 / 50
In the word designated for one screen location, the higher address contains
31 / 50
The iAPX88 processor supports ___________ modes of memory access.
32 / 50
After the execution of REP instruction CX will be decremented then which of the following flags will be affected?
33 / 50
When the operand of DIV instruction is of 16 bits then implied dividend will be of
34 / 50
The basic function of SCAS instruction is to
35 / 50
The extended ASCII has
36 / 50
Execution of the instruction “mov word [ES : 0], 0x0741” will print
37 / 50
If we want to divide a signed number by 2, this operation can better be accomplished by
38 / 50
In a video memory, each screen location corresponds to
39 / 50
After the execution of “PUSH AX” statement
40 / 50
When a 16 bit number is divided by an 8 bit number, the quotient will be in
41 / 50
The physical address of the stack is obtained by
42 / 50
The maximum parameters a subroutine can receive (with the help of registers) are
43 / 50
“mov byte [num1],5” is _______ instruction.
44 / 50
_________ is one of the reasons due to which string instructions are used in 8088
45 / 50
A 32 Bit processor has accumulator of ---------
46 / 50
When a 32 bit number is divided by a 16 bit number, the quotient will be stored in
47 / 50
To transfer control back the RET instruction take
48 / 50
In 8088 architecture, whenever an element is pushed on the stack
49 / 50
ASCII stands for ____________. The screen is two dimensional space having:
50 / 50
“Far” jump is not position relative but is _______________
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