CS401-Midterm
1 / 50
After the execution of REP instruction CX will be decremented then which of the following flags will be affected?
2 / 50
When a 16 bit number is divided by an 8 bit number, the quotient will be in
3 / 50
The instruction ADC has________ Operand(s)
4 / 50
CMPS instruction subtracts the source location to the destination location. Destination location always lies in
5 / 50
The clear screen operation initialize whole block of memory
6 / 50
In STOS instruction, the implied source will always be in
7 / 50
All the addressing mechanisms iniAPX88 return a number called ______ address.
8 / 50
physical address of the stack is obtained by
9 / 50
10 / 50
If we want to divide a signed number by 2, this operation can better be accomplished by
11 / 50
MOV instruction transfers a byte or word from which of the following source location.
12 / 50
The execution of the instruction “mov word [ES : 0], 0x0741” will print character “A” on screen, color of the character will be
13 / 50
Which of the following options contain the set of instructions to open a window to the video memory?
14 / 50
Each screen location corresponds to a word, the lower byte of this word contains ____
15 / 50
When the operand of DIV instruction is of 16 bits then implied dividend will be of
16 / 50
When an item is pushed on the decrementing stack, the top of the stack is
17 / 50
18 / 50
When a 16 bit number is divided by an 8 bit number, the dividend will be in
19 / 50
8088 is a 16bit processor with its accumulator and all registers of __________.
20 / 50
The execution of the instruction “mov word [ES: DI], 0x0720”
21 / 50
In assembly the CX register is used normally as a ______________register.
22 / 50
To convert any digit to its ASCII representation
23 / 50
After the execution of instruction “RET”
24 / 50
In the Rotate Right Operation every bit moves one position to right and the bit dropped from the right is inserted at the left and:
25 / 50
The execution of the instruction “mov word [ES : 0], 0x0741” will print character “A” on screen , background color of the screen will be
26 / 50
An offset alone is not complete without
27 / 50
After the execution of instruction “RET 2”
28 / 50
Which bit of the attributes byte represents the red component of background color ?
29 / 50
In STOSB instruction, when DF is Set, SI is
30 / 50
All the addressing mechanisms in iAPX88 return a number called _____________ address.
31 / 50
Execution of the instruction “mov word [ES : 0], 0x0741” will print
32 / 50
Regarding assembler, which statement is true:
33 / 50
The first instruction of “COM” file must be at offset:
34 / 50
allow changing specific processor behaviors and are used to play with it.
35 / 50
After the execution of instruction “RET ”
36 / 50
The basic function of SCAS instruction is to
37 / 50
The iAPX888 architecture consists of _______ register.
38 / 50
Assembly language is:
39 / 50
JC and JNC test the ____________ flag.
40 / 50
41 / 50
42 / 50
The iAPX88 processor supports ___________ modes of memory access.
43 / 50
44 / 50
if ax contains decimal -2 and BX contains decimal 2 then after the execution of instructions: CMP AX, BX ,JA label
45 / 50
To transfer control back the RET instruction take
46 / 50
“mov byte [num1], 5” is _________ instruction.
47 / 50
48 / 50
49 / 50
50 / 50
assembly the CX register is used normally as a ______________register.
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