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AARM User's Guide
AARM Introduction Assembling Programs Operators Control Statements 
Macro Processor Standard Macro Processor 
Standard Macro Controls Defining Standard Macros Calling Standard Macros Local Symbols Exiting A Macro Built-in Macros REPT IRP IRPC Standard Macro Operators NUL Operator & Operator % Operator ;; Operator ! Operator C Preprocessor Exceptions Side-Effects Predefined Macros Examples Error MessagesExceptions
While the C preprocessor in the assembler works almost like the preprocessor in the C compiler, there are several exceptions that are important to note.
- The predefined macros are different for the assembler and compiler.
- The assembler does not accept C escape sequences like "\n", "\r", or "\x0D". If you use these characters in a #define you must replace them with explicit HEX values.
- Unlike the C compiler, the assembler does not concatenate multiple strings into a single string. Therefore, you must separate strings with a comma (',') for the assembler to concatenate them.
- The #message directive is not available.
- The #warning directive is not available.
- The #pragma directive may be used to specify Assembler Directives.
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