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Appendix
Environment Settings
If you run the Cx51 Compiler within µVision IDE, you do not need any additional settings on your computer. If you want to run the Cx51 Compiler and utilities from the command prompt, you must manually create the following environment variables.
| Variable | Path | Description |
|---|---|---|
| PATH | \KEIL\C51\BIN | Path to the C51 and CX51 executable programs. |
| TMP | Path to use for temporary files generated by the compiler. If the specified path does not exist, the compiler generates an error and aborts compilation. | |
| C51INC | \KEIL\C51\INC | Path to the folder for Cx51 include files. |
| C51LIB | \KEIL\C51\LIB | Path to the folder for Cx51 library files. |
Environment variables are entered under Control Panel — System — Advanced — Environment Variables.
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