The Stec Special ROM for the JamMan provides precise control of most system parameters via MIDI using continuous controller messages. MIDI control systems (foot controllers, sequencers, etc..) can use these messages to control the operation of the system in real time. Refer to the table below for details on controller assignments to system parameters.
 

Please note that this map defines the default state of the system on powerup when the backup EEPROM has not been installed. The running map can be different if the Learn Mode was used.

Cont #	Default Assignment	Value Range
0	Slap Time	0-127
1	Slap Level	0-127
2	Click Level	0-127
3	Channel 1 Level	0-127
4	Channel 2 Level	0-127
5	Channel 3 Level	0-127
6	Channel 4 Level	0-127
7	Channel 1 Pan	0-127
8	Channel 2 Pan	0-127
9	Channel 3 Pan	0-127
10	Channel 4 Pan	0-127
11	Channel 1 Select	any value
12	Channel 2 Select	any value
13	Channel 3 Select	any value
14	Channel 4 Select	any value
15	Page 1 Select	any value
16	Page 2 Select	any value
17	Page 3 Select	any value
18	Page 4 Select	any value
19	Loop Function	0,127
20	Layer Function	0,127
21	Make Room Function	0,127
22	Replace Function	0,127
23	Mute Function	0,127
24	Fade Function	0,127
25	Destructive Fade Function	0,127
26	Active Channel Trigger Function	0,127
27	All Channels Trigger Function	0,127
28	Delay Function	0,127
29	Reset Function	0,127
30	Toggle Main Mute (Bypass)	0,127
31	Tap	0,127
32	Reset	0,127
33	Toggle Fade	0,127
34	Dry Level	0-127
35	Echo Divide	1-127
36	Echo Feedback	0-127
37	Number of Beats	1-127
38	Number of Repeats	0-127 (0 = infinite)
39	Output Level	0-127
40	Fade Rate	0-127

0 through 10 use continuous values from 0-127. Any value sent to 19 through 33 will select the channel or page. Transitions from 0 to 127 toggle the functions for 19 to 33. This is a real rough quicky system.