System Exclusive Data; System Exclusive Implementation - Access Virus Rack XL User Manual

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CHAPTER 13
Appendix
System Exclusive
Data
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SYSTEM EXCLUSIVE
IMPLEMENTATION
The Parameters of the VIRUS are organized in
three so-called pages A, B and C. Each page
contains 128 parameters, addressed by num-
bers from 0 to 127. Each parameter is repre-
sented by one byte with a maximum value of
127. All parameters are individually accessible
by SysEx-Parameterchange.
The pages A and B represent a Single-Program,
thus a Single-Program contains 256 Bytes.
Page A (LowPage) contains Single parameters
that are usefull for MIDI automation. The param-
eters of this page are additionally controllable
by MIDI Control Change. The sending and re-
ception of MIDI Control Change can be enabled
or disabled by MIDI CONTROL LowPage (CTRL
menu). When disabled (LowPage=SysEx), the
VIRUS only sends and receives SysEx Parame-
ter Change on Page A. When enabled (Low-
Page=Contr), the VIRUS sends MIDI Control
Change on parameter movement, and receives
both MIDI Control Change and SysEx-Parame-
terchange on Page A.
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The default setting is LowPage =Contr.
The remaining Single parameters in Page B
(HiPage) are additionally controllable by MIDI
Polyphonic Pressure (!). The send and reception
of MIDI Poly Pressure can be enabled or disa-
bled by MIDI CONTROL HiPage (CTRL menu).
When disabled (HiPage=SysEx), the VIRUS only
sends and receives SysEx Parameter Change
on Page B. When enabled (HiPage=PolyPrs),
the VIRUS sends MIDI Poly Pressure on param-
eter movements, and receives both MIDI Poly
Pressure and SysEx Parameter Change on
Page B. This feature should not be used in con-
nection with a keyboard that sends Polyphonic
Pressure.
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The default setting is HiPage=SysEx.
Page C contains Multi parameters and Global
parameters. These parameters are sent and re-
ceived only by SysEx Parameter Change.
In the following, all bytes are shown in hexade-
cimal representation.
CONTROL CHANGE MESSAGE (ONLY
PAGE A)
Bc Status byte,
c=MIDI channel
nn Parameter Number 0..127
(see parameter list Page A)
vv Parameter Value
see parameter list Page A)
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The Control Change messages are defined
as Performance Controller (e.g. Modulation
Wheel or Hold Pedal) or Sound Parameters (e.g.
Cutoff or Patch Volume). The Performance Con-
trollers are not stored with a Single-Sound. If
more than one Multi Part is set to the same MIDI
channel, all Parts on this MIDI channel receive
0..127