Assembly

Question 1

An …….. is a low-level programming language for a computer

Answer 1

assembly language

Question 2

a very strong correspondence between the language and the architecture’s machine code instructions

Answer 2

assembly language

Question 3

the conversion process is referred to as assembly involves three steps:

Answer 3

Assembling , Linking , and loading .

Question 4

The assembly steps involve translating the source code into object code and generating an intermediate OBJ file or module

Answer 4

Assembling

Question 5

…….. calculates the offset for every data item in the data segment and every instruction in the code segment

Answer 5

The assembler

Question 6

The assembler creates a header immediately ahead of the generated OBJ module. Part of the header contains information about …………..

Answer 6

incomplete addresses.

Question 7

Convert the .OBJ module to an .EXE machine code module. Combine separately
assembled programs into one executable module

Answer 7

Linking

Question 9

load the program for execution and complete any addresses indicated in the header that were left incomplete. drop the header and create a PSP immediately before the program loaded in memory

Answer 9

Loading

Question 10

programs executable program with an …. extension

Answer 10

exe

Question 11

command common program with a …. extension

Answer 11

.com

Question 12

A comment begins with a

Answer 12

semicolon (;)

Question 13

is a name that you apply to items in your program. The first character of an identifier must be an alphabetic letter or a special character(? $ @ _ ) except for the period may not be the first character, not case sensitive and the maximum length of an identifier is 247 characters

Answer 13

identifier

Question 14

case sensitive (EXE)
(T/F)

Answer 14

False

Question 15

Instructions such as …… and ….. , which the assembler translates to object code.

Answer 15

MOV and ADD

Question 16

tell the assembler to perform a specific action, such as define a data item.

Answer 16

Directives

Question 17

No operands: …..
One operand: ……
Two operands: …….
Three operands:…….

Answer 17

RET
MUL 10
MOV CX , 10
SHRD ECX,EBX,CL

Question 18

it provides information for the operation to act on. For a data item, the operand defines its initial
value. For example: Counter DB 0

Answer 18

Operand

Question 19

indicates where to perform the action

Answer 19

operand

Question 20

the way a source program assembles and lists . Generate no machine code

Answer 20

Directives Control

Question 21

an assent. program in .EXE format consists of one or more segments.

Answer 21

Segment directive

Question 22

A stack segment defines …….
A data segment defines……
A …… segment provides for executable code.

Answer 22

stack storage ,data items, code

Question 23

indicates the boundary on which the segment is to begin. ……is typically
used and is the default.

Answer 23

Alignment type,PARA

Question 24

indicates whether to combine the segment with other segments when they are linked after assembly.

Answer 24

Combine type

Question 25

Combine types are ...... , ...... , ...... and ..... When a program is not to be linked with others this option may be omitted or code NONE.

Answer 25

STACK, COMMON, PUBLIC, and AT (PUBLIC and COMMON are the most used)

Question 26

The class entry is enclosed in ......., is used to group related segments when linking.. Use 'code' for the code segment, `data' for the data segment, and 'stack' for the stack segment.

Answer 26

(Class type), apostrophes

Question 27

Tells the assembler the purpose of each segment in the program

Answer 27

Assume directive

Question 28

where ENDS end a segment, ENDP ends a procedure. An END directive ends an entire program.

Answer 28

End Proc

Question 29

A data item may contain an undefined value, or a constant, or a character string, or a numeric value.

Answer 29

Data Definition

Question 30

DF:.......

Answer 30

farword

Question 31

DQ

Answer 31

quadword

Question 32

DT

Answer 32

tenbytes

Question 33

DD

Answer 33

doubleword

Question 34

DW

Answer 34

word

Question 35

DB

Answer 35

byte

Question 36

Numeric constants can be in ....,....,....,.....

Answer 36

decimal, hexadecimal, binary, or real.

Question 37

contains machine instructions to be executed.

Answer 37

Code segment (CS)

Question 38

contains program data and constants

Answer 38

Data segment (DS)

Question 39

contains data or addresses needed by called subroutine

Answer 39

Stack segment (SS)

Question 40

...... is a special area defined in memory begins on a paragraph boundary ,Up to...... byte

Answer 40

Segments,64k

Question 41

Segment Registers

Answer 41

CS,DS,SS,ES, FS and GS

Question 42

.....,......,...... registers contain addresses of segments

Answer 42

CS , DS and SS

Question 43

segment address + offset

Answer 43

Actual address

Question 44

address in CS + offset address in IP

Answer 44

Address of next instruction

Question 45

address in SS+ offset address in SP

Answer 45

Address of current word in stack

Question 46

facilitates referencing parameters in stack

Answer 46

BP

Question 47

I/O and arithmetic

Answer 47

AX (accumulator)

Question 48

index to extended address

Answer 48

BX(base reg)

Question 49

for looping

Answer 49

CX(counter reg)

Question 50

for I/O operations

Answer 50

DX(data reg)

Question 51

SI, DI

Answer 51

Index register

Question 52

.COM programs only have ...... for both instructions and data

Answer 52

1 segment

Question 53

restricted to a size of ..... or less

Answer 53

64K

Question 54

.com always smaller than the same program assembled as a .EXE file(T/F)

Answer 54

True

Question 55

combines PSP, stack, data, and code segments into one segment

Answer 55

.COM

Question 56

Assembler automatically generates a stack for ...... program

Answer 56

a .COM

Question 57

The loader will load a .COM program but will initialize all segment registers to the start of the......

Answer 57

PSP

Question 58

Programmer must include a ........directive to get the registers to point to the right place

Answer 58

ORG 100H