Roland MC-202 Manual - Concepts

concepts - lcd display - edit steps - edit realtime - step & gate length - play mode - quickresults - side notes - signal flow

Concepts of the MC-202 sequencer

The "MC" stands for Micro Composer, it's the sequencer.
- The upper half of the front panel is much like a SH-101 synthesizer, but without the noise VCO.
- The lower half can be compared to a trimmed down MC-500 sequencer with soft calculator buttons and no midi.

- you have 2 Tracks ("Channels") in which you program your songs
- the MC-202 does not use Patterns and Tracks concepts, like the way the TR-606 or the TB-303 do
- (so you can not switch from one Pattern loop to another in live situations)

Programming the sequencer can be done in 3 different ways:
1. Using the STEP, GATE and NUMBER buttons
2. Play in time using the keyboard or an external cv/gate keyboard
3. Enter the notes using the keyboard and TAP the notes in time (rhythm)

A note always contains:
- Pitch
- STEP length: duration of the note until the next note or rest plays
- GATE time: the time the key on the keyboard is pressed (=attack-decay-sustain time)
> so a note's GATE time can never be longer than its STEP time

Optional properties of a note:
- Accent
- Porta (from previous note)
- an "End of Measure" marker (yes this is a note property)

Note properties:
NOTE PITCH "End of Measure"
STEP length
GATE time
PORTA (from)

- PLAY mode: synthesizer/sequencer play
- EDIT mode: sequencer edit

Sequencer data

After editing, the sequencer will contain something like this:

3d   24 24          
2d   48 12   x x    
3e   48 12   x      
5d#   24 6          
2d   48 36     x    
End of Measure
2d   12 0          
3d   24 24     x    
3e   96 48   x      
..   .. ..   .. ..   ..
..   .. ..   .. ..   ..

It looks a bit like a rudimentary MOD Tracker.

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