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Library Files

RTX51 Tiny includes two library files:

  • RTX51TNY.LIB is used for non-banking RTX51 Tiny programs.
  • RTX51BT.LIB is used for code-banking RTX51 Tiny programs.

The RTXTINY2.PRJ project found in the \KEIL\C51\RTXTINY2\SOURCECODE\ folder is used to build these two libraries.


  • You should not explicitly include either of the RTX51 Tiny libraries in your application. That is done automatically when you use the µVision IDE or when you use the command-line linker.
  • When you build the RTX51 Tiny libraries, the default configuration file (CONF_TNY.A51) is included in the library. If you do not explicitly include a configuration file (CONF_TNY.A51) in your project, the default one from the library will be included. Subsequent changes to the configuration file stored in the library may have adverse effects on the operation of your application.
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