The new Stec Special ROM for the JamMan provides a lot of new MIDI features. With the new Stec Special software, the JamMan can be controlled using both MIDI program change messages and continuous controllers. In the Melotron and Sampler modes, MIDI notes can also be used to control the system.
 

Continuous Controllers Program Change MIDI Clock IN MIDI Clock OUT MIDI Notes

MIDI Indicator
The presence of incoming MIDI data is indicated by the decimal point on the number display.