Two-Pass Assembler Quiz

Which of the following is not performed during Pass 1 of a two-pass assembler?

• Creation of Symbol Table

• Assignment of addresses to labels

• Generation of final machine code

• Identification of assembler directives

In Pass 1, the location counter (LC) is mainly used to:

• Store intermediate code

• Maintain symbol list

• Keep track of memory addresses

• Load the object file

The main output of Pass 1 of an assembler is:

• Executable file

• Object code

• Intermediate code and symbol table

• Source program

Which data structure is essentially built during Pass 1?

• Literal Table

• Symbol Table

• Base Table

• Object File

The assembler directive START 100 in Pass 1:

• Terminates the program

• Begins at location 100

• Declares constants

• Is used in Pass 2 only

Which of the following is true about Pass 1?

• It ignores all labels

• It generates final object code

• It processes assembler directives

• It executes the program

In Pass 1, forward references are:

• Always resolved immediately

• Ignored until Pass 2

• Replaced with zero

• Stored in intermediate code for later resolution

Which of the following assembler directives affects the location counter during Pass 1?

• END

• DC

• EQU

• START

If a label is defined more than once in the code, what happens in Pass 1?

• No effect

• The label is overwritten

• A duplicate symbol error is generated

• The first definition is deleted

What does the assembler do when it encounters a pseudo-op like DS 3 during Pass 1?

• Reserves 3 words and updates LC

• Adds 3 entries to the symbol table

• Generates machine code

• Terminates program