Roland G-800 Reference Manual page 83

MIDI mode, MIDI messages used by the G-800
E Portamento (control change number 65)
Portamento Time (control change number 5)
Portamento Control (control change number 84)
Portamento is an effect that creates a smooth change in pitch between the previously played
note and the new played note. When a Portamento message is received, the Portamento effect
will be turned on or off. Portamento Time controls the speed of the pitch change. Portamento
Control specifies the source note number (the previously played note).
E Aftertouch (Channel Pressure only *)
Aftertouch is a message that conveys the pressure applied to the keyboard after playing a
note, so that this information can be used to control various aspects of the sound. There are
two types of Aftertouch message; Polyphonic Key Pressure which is transmitted separately
for each note, and Channel Key Pressure which is transmitted as one value that affects all
notes on the specified MIDI channel.
E All Sound Off
This message turns off all currently-sounding notes.
E All Note Off message *
This message causes a note-off message to be sent to each note of the specified channel that
is currently on. However, if Hold 1 or Sostenuto are on, the sound will continue until these
are turned off.
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