Addressing Memory

Addressing Memory

1. Overview

   • Every location in memory has its own address.
     • Need to be able to store or load any data in memory.
     • Several ways for programs to refer to addresses. These methods are called memory address modes
   • Memory Address Modes determine the method used by a running program to access its data or next instruction
   • Memory is internal registers of the CPU as well as external RAM
   • Main modes are Direct, Indirect, Immediate and Indexed.
   • Assembly language programmers are very much involved in deciding the used mode.