Alesis D4 Service Manual page 29

System Byte Bit Definitions:
Bit
0 Omni Off
1 Midi Thru Enable
2 Program Change Enable Set if program change receive is enabled.
3 Controllers Enable
4 Drumset Edited
5 Footswitch Mode
6 Note Chase Enable
Message 1 / Edit Buffer
Data Format (following header):
Byte Bit Field
7 0000 0001
8 0aaa aaaa
9 0aaa aaaa
--- ---- ----
--- ---- ----
21 0aaa aaaa
22 0mmm mmmm
23 00nn nnnn
24 00nn nnnn
25 00nn nnnn
26 00nn nnnn
--- ---- ----
--- ---- ----
36 00nn nnnn
37-41 ---- ----
42-46 ---- ----
--- ---- ----
--- ---- ----
337-341 ---- ----
342 0xxx xxxx
343 1111 0111
Note Data Packet Definitions (5 bytes per note):
Byte Bit Field
0 0vvv vvvv
1 0ppp obbb
2 0nnn nnnn
3 0fff ffff
4 0xxg gccc
Alesis D4/D5 Drum Modules Service Manual
Function
Set if omni mode is off.
Set if MIDI thru is enabled.
Set if MIDI controllers are enabled.
Set if drumset in edit buffer has changed.
0 = Hi Hat, 1 = Drumset Advance
Set if Note Chase is on.
Description
Opcode = Edit Buffer
Drumset name character 1
Drumset name character 2
Drumset name character 14
Drumset Root Note
Footswitch "closing" note
Footswitch "held" note
Trigger 1 note number
Trigger 2 note number
Trigger 12 note number
Data packet for note 0
Data packet for note 1
Data packet for note 60
Checksum
EOX
v = volume (0-99)
p = panning: 0=left, 3=center , 6=right
o = output: 0=main, 1 = aux
b = drum bank: (0-6) Kik, Snr, Cym, Tom, Prc, Efx
{0-8} Kik, Snr, Tom, Hat, Cym, Prc, Efx, Rnd
n = drum number (0-99, drum bank specific)
f = fine tuning (0-99 cents)
x = reserved, always 0
g = assign group (0-3): 0=multi, 1=single, 2=group 1, 3=group 2
c = coarse tuning (-4,+3 semitones)
Polarity
(ascii)
(ascii)
---
---
(ascii)
(0-67)
(0-60)
(0-60)
(0-60)
(0-60)
---
---
(0-60)
(see below for packet definitions)
---
---
(0-127)
Description
25
Range
---
---
---
---
---
---
---
---
02/19/03