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A251 User's Guide

This Assembler User's Guide provides an overview of the Keil A251 Assembler. It contains the following chapters.

  • Introduction provides a brief introduction to the Keil A251 Macro Assembler.
  • Assembling Programs specifies how to run the assembler and generate object files. This chapter discusses the directives that are available.
  • Writing Assembly Programs describes the components of an assembly program and some aspects of writing assembly programs.
  • Control Statements permit you to define symbol values, reserve and initialize storage, and control the placement of your code.
  • Macro Processor discusses how to use the macro expansion capabilities of the assembler.
  • Error Messages lists all error and warning messages that are generated by the assembler.
  • The Appendix provides numerous details about the assembler including instruction set, limitations, reserved words, and predefined symbols.

Revision History

  • April 2007: Initial revision online.
  • May 2004: Initial revision in CHM format.
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