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JMRI: DecoderPro is an essential utility for model railroad enthusiasts.

Modern DCC decoders are complicated beasts to program. The simple idea of "put the address in CV01" doesn't cope well when you program complicated functions using combinations of bit patterns. A friendlier interface is needed. There are programs that provide better ways of programming specific decoders. Unfortunately, they are limited to specific types of computers, and only their authors can customize them for new types of decoders.

The DecoderPro symbolic programmer is meant to improve this. It is configured using text files, so that more...

What's New

Version 4.0.1:

Note: This JMRI version requires Java 1.8. To use this or any later JMRI test or production releases, you'll have to update the Java on your computer to Java 1.8 or later.

Hardware Support
  • Crash if port missing - JMRI would crash on startup if a previously configured port was no longer present. This is now fixed. This change is the only difference more...


  • OS X 10.8.3 or later
  • Java 1.8 or later
  • An available serial port, either on the computer itself, or via a USB adapter. For more information, please see the download pages.
  • A serial connection to your DCC system. For more information, please see the DCC hardware pages.

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Current Version (4.x)


Downloads 9,200
Version Downloads 58
License Free
Date 16 Sep 2015
Platform Intel 64 / OS X / Intel 32
Price Free
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