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Ax51 User's Guide
Ax51 Introduction 
Assembling Programs 
Environment Settings Command Prompt ERRORLEVEL Output Files Listing (LST) File Object (OBJ) File Conditional Assembly Directives Reference CASE COND DATE DEBUG DEFINE ECRM EJECT ELSE ELSEIF ENDIF ERRORPRINT GEN GENONLY IF INCDIR INCLUDE LIST MACRO MOD_CONT MOD_MX51 MOD51 MPL NOAMAKE NOCASE NOCOND NODEBUG NOERRORPRINT NOGEN NOLINES NOLIST NOMACRO NOMOD51 NOMPL NOOBJECT NOPRINT NOREGISTERBANK NOSYMBOLS NOSYMLIST NOXREF OBJECT PAGELENGTH PAGEWIDTH PRINT REGISTERBANK REGUSE RESET RESTORE SAVE SET SYMBOLS SYMLIST TITLE XREF Writing Assembly Programs Control Statements Macro Processor Error Messages AppendixEnvironment Settings
If you run the Ax51 Assembler within the µVision IDE, you require no additional settings on your computer. To run the assembler from the command prompt, you must manually create the following environment variables.
| Variable | Path | Description |
|---|---|---|
| PATH | \KEIL\C51\BIN | Path to the executable programs. |
| TMP | Path to use for temporary files generated by the assembler. If the specified path does not exist, the assembler generates an error and aborts. | |
| C51INC | \KEIL\C51\INC | Path to the folder for C51 include files. |
Environment variables are entered under Control Panel — System — Advanced — Environment Variables.
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