Automatic system Design for finding the Addressing Modes based on Context Free Grammar

Addressing Modes are important subject in computer architecture. In computer programming, addressing modes are mainly useful to assembly language programmer and to compiler writers. The goal of this work is twofold: 1) checking and programming addressing modes, 2) provides a higher level of understanding about each type of them. The proposed system consist of two stages; the first one is for checking Addressing Modes by generate a Context Free Grammar (CFG) for each types of it, CFG give an exact, easy to understand syntactic requirement of Addressing modes and provide a way to detecting an errors; second stage is for implementing all addressing modes and finding an effective address of instruction in use. This work provides a way that's useful for scientific aspects.