3.8 Ports
When a 12 Step is connected to a computer, two virtual MIDI “ports” (or “busses”) are created —!12
Step Port 1 and 12 Step Port 2. They are the “portal” to communicating with a connected 12 Step. The
ports allow for bi-directional communication between the computer and the 12 Step (and MIDI
Expander if one is connected), and should appear in any MIDI-capable application when a 12 Step is
connected.
Understanding what each port is for and how they work is crucial to mastering the 12 Step hardware
and software.
3.8.1 Port 1 vs. Port 2
12 Step Port 1 is used to receive data from (and send data to) the 12 Step itself.
This is the port applications should listen to in order to receive MIDI coming from the 12 Step. This
is also the port that data should be sent to for controlling the 12 Step LEDs, display, and presets.
12 Step Port 2 is used to receive data from (and send data to) an attached MIDI Expander. MIDI
sent from an external device to the Expander’s MIDI In will enter a computer via SSCOM Port 2. Any
MIDI sent to SSCOM Port 2 will be sent out of the Expander’s MIDI Out.
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