CS401-Midterm
1 / 50
After the execution of STOSW the CX will be
2 / 50
When the operand of DIV instruction is of 16 bits then implied dividend will be of
3 / 50
In the instruction MOV AX, 5 the number of operands are
4 / 50
Which mathematical operation is dominant during the execution of SCAS instruction
5 / 50
The iAPX888 architecture consists of _______ register.
6 / 50
8088 is a 16bit processor with its accumulator and all registers of __________.
7 / 50
The basic function of SCAS instruction is to
8 / 50
When an item is pushed on the decrementing stack, the top of the stack is
9 / 50
Regarding assembler, which statement is true:
10 / 50
The first instruction of “COM” file must be at offset:
11 / 50
The execution of the instruction “mov word [ES : 160], 0x1230” will print a character “0” on the screen at
12 / 50
REP will always
13 / 50
The maximum parameters a subroutine can receive (with the help of registers) are
14 / 50
When a 16 bit number is divided by an 8 bit number, the quotient will be in
15 / 50
_________ is one of the reasons due to which string instructions are used in 8088
16 / 50
one DIV instruction has
17 / 50
The physical address of the stack is obtained by
18 / 50
In STOSB instruction, when DF is Set, SI is
19 / 50
To transfer control back the RET instruction take
20 / 50
21 / 50
The execution of the instruction “mov word [ES: 0], 0x0741” will print “A” on the screen, color of the character will be
22 / 50
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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24 / 50
Execution of the instruction “mov word [ES : 0], 0x0741” will print
25 / 50
The second byte in the word designated for one screen location holds
26 / 50
27 / 50
The clear screen operation initialize whole block of memory
28 / 50
When a 32 bit number is divided by a 16 bit number, the quotient is of
29 / 50
“mov byte [num1], 5” is _________ instruction.
30 / 50
The routine that executes in response to an INT instruction is called
31 / 50
one RET is executed, it recovers the values from
32 / 50
When a very large number is divided by very small number so that the quotient is larger than the space provided, this is called
33 / 50
Which of the following options contain the set of instructions to open a window to the video memory?
34 / 50
which bit sets the character "blinking" on the screen?
35 / 50
The second byte in the word designated for screen location holds
36 / 50
After the execution of instruction “RET”
37 / 50
38 / 50
JC and JNC test the ____________ flag.
39 / 50
Code Segment is associated to _______ register by default.
40 / 50
The execution of the instruction “mov word [ES : 0], 0x0741” will print character “A” on screen, color of the character will be
41 / 50
After the execution of REP instruction CX will be decremented then which of the following flags will be affected?
42 / 50
Left-Shift-Operation the left most bit _______
43 / 50
After the execution of instruction “RET 2”
44 / 50
One screen location corresponds to a
45 / 50
In the word designated for one screen location, the higher address contains
46 / 50
47 / 50
Which bit of the attributes byte represents the blue component of foreground color
48 / 50
_______ register holds the address of next instruction is to be executed
49 / 50
allow changing specific processor behaviors and are used to play with it.
50 / 50
In assembly the CX register is used normally as a ______________register.
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