CS401-Midterm
1 / 50
The physical address of the stack is obtained by
2 / 50
Which of the following options contain the set of instructions to open a window to the video memory?
3 / 50
In STOS instruction, the implied source will always be in
4 / 50
To convert any digit to its ASCII representation
5 / 50
After the execution of instruction “RET 2”
6 / 50
_______ register holds the address of next instruction is to be executed
7 / 50
physical address of the stack is obtained by
8 / 50
The first instruction of “COM” file must be at offset:
9 / 50
After the execution of “PUSH AX” statement
10 / 50
Code Segment is associated to _______ register by default.
11 / 50
When an item is pushed on the decrementing stack, the top of the stack is
12 / 50
The basic function of SCAS instruction is to
13 / 50
14 / 50
Execution of the instruction “mov word [ES : 0], 0x0741” will print
15 / 50
The iAPX888 architecture consists of _______ register.
16 / 50
The routine that executes in response to an INT instruction is called
17 / 50
| 0 |--›| 1 | 1 | 0 | 1 | 0 | 0 | 0 | --›| C | is a example of ______
18 / 50
In a video memory, each screen location corresponds to
19 / 50
The execution of the instruction “mov word [ES : 0], 0x0741” will print character “A” on screen , background color of the screen will be
20 / 50
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
21 / 50
After the execution of STOSW, the CX will be
22 / 50
CMPS instruction subtracts the source location to the destination location. Destination location always lies in
23 / 50
Each screen location corresponds to a word, the lower byte of this word contains ____
24 / 50
Only instructions allow moving data from memory to memory.
25 / 50
8088 is a 16bit processor with its accumulator and all registers of __________.
26 / 50
Which mathematical operation is dominant during the execution of SCAS instruction
27 / 50
When a 16 bit number is divided by an 8 bit number, the quotient will be in
28 / 50
All the addressing mechanisms in iAPX88 return a number called _____________ address.
29 / 50
If we want to divide a signed number by 2, this operation can better be accomplished by
30 / 50
The execution of the instruction “mov word [ES: DI], 0x0720”
31 / 50
RETF will pop the offset in the
32 / 50
The clear screen operation initialize whole block of memory
33 / 50
Stack is a ______ that behaves in a first in last out manner.
34 / 50
Which bit of the attributes byte represents the red component of background color ?
35 / 50
36 / 50
After the execution of REP instruction CX will be decremented then which of the following flags will be affected?
37 / 50
After execution of JCXZ instruction CX will changed with flag affect.
38 / 50
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
39 / 50
The execution of the instruction “mov word [ES: 0], 0x0741” will print “A” on the screen, color of the character will be
40 / 50
assembly the CX register is used normally as a ______________register.
41 / 50
allow changing specific processor behaviors and are used to play with it.
42 / 50
In the instruction “CMP AX,BX” the contents of
43 / 50
In string manipulation whenever an instruction needs a memory source, which of the following will hold the pointer to it?
44 / 50
In assembly the CX register is used normally as a ______________register.
45 / 50
46 / 50
After the execution of instruction “RET”
47 / 50
48 / 50
mov ax,5 has
49 / 50
50 / 50
Your score is
The average score is 64%
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