Assembler

An assembler translates assembly language into machine code

Assembling Process

A SIC/XE source program looks like this

A Intermediate file looks like this

An object file looks like this

• Pass-1:
  1. Define symbols and literals and remember them in symbol table and literal table respectively.
  2. Keep track of location counter
  3. Process pseudo-operations
• Pass-2:
  1. Generate object code by converting symbolic op-code into respective numeric op-code
  2. Generate data for literals and look for values of symbols