Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

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     Select a directive for more information.
 
     Directive       Description
 
     EQU             Defines symbol, numeric EQU not redefinable
     =               Defines symbol, always redefinable
     TEXTEQU         Defines text symbol, resolves text macros and
                     expressions
 
     OPTION          Enables and disables assembler options
     CASEMAP         Maps characters to uppercase
     FLOAT           Controls floating-point instruction generation
     .RADIX          Sets default radix for constants
 
     ALIGN           Aligns code or data to given boundary
     EVEN            Aligns code or data to even (word) boundary
     ORG             Sets location counter
 
     CATSTR          Concatenates strings
     INSTR           Finds position of characters in string
     SIZESTR         Returns length of string
     SUBSTR          Extracts characters from string
 
     INCLUDE         Includes assembler format file
     INCLUDELIB      Includes library format file
 
     COMMENT         Begins a comment block
     ECHO            Displays message during assembly
 
     PUSHCONTEXT     Saves context information to stack
     POPCONTEXT      Restores saved context information from stack
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