Question

A simple two-pass assembler does which of the following in the first pass? 
1. Checks to see if the instructions are legal in the current assembly mode
2. It allocates space for the literals
3. It builds the symbol table for the symbols and their values
4. All of these

Answer 1

Correct Answer - Option 4 : All of these

The correct answer is option 4

In a simple two-pass assembler,

Tasks performed in 1^st pass are as follows

1. Checks to see if the instructions are legal in the current assembly mode
2. Assign the address to all statements (address resolution)
3. Save the values
4. Processing of assembler directives
5. Table creation (symbol table), Adding literals to the literal table
6. Allocate space for the literals
7. Compute the total length of a program

Tasks performed in 2^nd pass 

1. Generate object-oriented code.
2. Writing/printing assembly listing.
3. Generate code for all load and store instruction