A251 User's Guide

Writing Assembly Programs

The A251 macro assembler is a multi pass assembler that translates 251 assembly language programs into object files. These object files are then combined or linked using the L251 Linker/Locator to form an executable, ready to run, absolute object module. As a subsequent step, absolute object modules can be converted to Intel HEX files suitable for loading onto to your target hardware, device programmer, or In Circuit Emulator (ICE) unit.

The following topics describe the components of an assembly program, and some aspects of writing assembly programs. An assembly program consists of one or more statements. These statements contain directives, controls, and instructions.