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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

What's New

Version 4.8.0:
Required Migration Step
  • JMRI was updated in JMRI 4.7.4 to use a new serial library. Depending on your exact circumstances, you may need to do some migrations:
    • If you are using JMRI on Linux or Mac OS X and are updating from an older JMRI version, you must open the JMRI preferences and make sure that the selections are correct for your serial device(s). Be sure


  • 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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JMRI: DecoderPro User Discussion

4 4


Current Version (4.x)


Downloads 9,667
Version Downloads 90
License Free
Date 24 Jul 2017
Platform Intel 64 / OS X
Price Free
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