The Boss 500 Series contists of:
* DD-500 Digital Delay
* MD-500 Modulation
* RV-500 Reverb
				
DD-500 CC#
[A] switch 		82
[B] switch 		83
[TAP/CTL] switch 	84
EXP pedal  		16 
CTL 1 switch		80
CTL 2 Switch		81
[FEEDBACK] knob 	17
[TONE] knob 		19 
[E. LEVEL] knob  	18
[MOD DEPTH] knob 	20
Delay on, Bypass	21

Looper
Phrase loop		22
Record, Overdub		23
Loop playback 		24
Stop  			25
Clear 			26


MD-500 CC#
[RATE/VALUE] knob	17
[DEPTH] knob		18
[E. LEVEL] knob		19
[PARAM 1] knob		20
[PARAM 2] knob		21
CTL 1 switch 		80
CTL 2 Switch		81
EXP pedal		16
Effect on, Bypass	27
Effect A on, Bypass	28
Effect B on, Bypass	29


RV-500 CC#
[TIME/VALUE] knob	17 (reverb)
			22 (delay)
[PRE-DELAY] knob	18 (reverb)
			23 (delay)
[E. LEVEL] knob		19 (reverb)
			24 (delay)
[LOW] knob		20 (reverb)
			25 (delay)
[HIGH] knob		21 (reverb)
			26 (delay)
CTL 1 switch		80
CTL 2 Switch		81
EXP pedal		16
Effect on, Bypass	27
Effect A on, Bypass	28
Effect B on, Bypass	29