Digital Inputs

PIN123456
A 0 Group 1 A STEP 1 STEP 9 MUTE -
B 1 - B STEP 2 STEP 10 LOOP -
C 2 - - STEP 3 STEP 11 FWD (TEMPO)
D 3 Group 3 - STEP 4 STEP 12 PLAY (TEMPO)
E 4 Group 4 EXIT STEP 5 STEP 13 - EDIT
F 5 Group 2 SELECT STEP 6 STEP 14 STOP SONG
G 6 (INST) - STEP 7 STEP 15 RWD -
H 7 (INST) - STEP 8 STEP 16 - PATTERN

Digital Outputs

PIN1234567
QA 7 MA trigger GATE STEP 8 - STEP 16 MUTE ACCENT
QB 6 CP trigger A STEP 7 - STEP 15 STOP ACCENT
QC 5 HT trigger B STEP 6 CH trigger STEP 14 FWD BEAT
QD 4 MT trigger - STEP 5 OH trigger STEP 13 REW BAR
QE 3 LT trigger C STEP 4 CY trigger STEP 12 LOOP EDIT
QF 2 SD trigger - STEP 3 - STEP 11 SELECT SONG
QG 1 BD trigger D STEP 2 CB trigger STEP 10 EXIT PATTERN
QH 0 - AUX STEP 1 RS trigger STEP 9 - PLAY

NOTES: "-" denotes not used. Items in parentheses are encoders and need two shift register pins.