Roland System-1 (System-1M) MIDI CC chart, NRPN and OSC map¶
The Roland System-1 (System-1M) MIDI implementation: 56 CC, each named, for Claude (MCP), SuperCollider or any OSC app.
| Device | Roland System-1 (System-1M) |
|---|---|
| Vendor | Roland |
| OSC prefix | /system_1_system_1m |
| Source | 📦 Derived from MIDI Guide (community CC/NRPN data) |
| Firmware | unknown |
| Revision | per pencilresearch canonical CSV |
| Upstream | pencilresearch |
| Data licence | CC-BY-SA-4.0 — MIDI Guide (https://midi.guide) by Pencil Research and contributors |
| Driver file | devices/roland/system_1_system_1m.json |
Not tested on the device yet
This driver comes from documentation or community data and has not been checked on real hardware. If you own one, a quick test and a pull request promoting it helps everyone — see CONTRIBUTING.
How do you control it?¶
Find the MIDI ports, then start the bridge with this driver:
osc-bridge detect # prints the ready-to-run line for what is plugged in
osc-bridge run --device devices/roland/system_1_system_1m.json --out-port <N> --in-port <M>
Then send OSC to 127.0.0.1:7777, for example:
From Claude or any MCP client, the osc-bridge mcp server exposes this driver as system_1_system_1m: ask “what can the Roland System-1 (System-1M) do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (56)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/system_1_system_1m/general/mod |
1 | 0–127 | continuous | General | |
/system_1_system_1m/filter/lpf_cutoff |
3 | 0–127 | continuous | Filter | |
/system_1_system_1m/general/portamento |
5 | 0–127 | continuous | General | |
/system_1_system_1m/filter/reso |
9 | 0–127 | continuous | Filter | |
/system_1_system_1m/general/pedal_control |
11 | 0–127 | continuous | General | |
/system_1_system_1m/fx/amp_crusher |
12 | 0–127 | continuous | FX | |
/system_1_system_1m/fx/delay_time |
13 | 0–127 | continuous | FX | |
/system_1_system_1m/mix/mixer_osc1 |
16 | 0–127 | continuous | Mix | |
/system_1_system_1m/mix/mixer_osc2 |
17 | 0–127 | continuous | Mix | |
/system_1_system_1m/mix/mixer_sub_osc |
18 | 0–127 | continuous | Mix | |
/system_1_system_1m/mix/mixer_noise |
19 | 0–127 | continuous | Mix | |
/system_1_system_1m/general/pitch_env |
22 | 0–127 | continuous | General | |
/system_1_system_1m/envelopes/pitch_attack |
23 | 0–127 | continuous | Envelopes | |
/system_1_system_1m/envelopes/pitch_decay |
24 | 0–127 | continuous | Envelopes | |
/system_1_system_1m/lfo/pitch |
26 | 0–127 | continuous | LFO | |
/system_1_system_1m/lfo/fade_time |
27 | 0–127 | continuous | LFO | |
/system_1_system_1m/lfo/filter |
28 | 0–127 | continuous | LFO | |
/system_1_system_1m/lfo/rate |
29 | 0–127 | continuous | LFO | |
/system_1_system_1m/lfo/amp |
30 | 0–127 | continuous | LFO | |
/system_1_system_1m/lfo/type |
35 | 0–127 | continuous | LFO | |
/system_1_system_1m/oscillators/osc1_type |
46 | 0–127 | continuous | Oscillators | |
/system_1_system_1m/oscillators/osc1_range |
47 | 0–127 | continuous | Oscillators | |
/system_1_system_1m/oscillators/osc1_color |
50 | 0–127 | continuous | Oscillators | |
/system_1_system_1m/oscillators/osc1_cross_mod |
52 | 0–127 | continuous | Oscillators | |
/system_1_system_1m/oscillators/osc2_color |
55 | 0–127 | continuous | Oscillators | |
/system_1_system_1m/oscillators/osc2_tune |
56 | 0–127 | continuous | Oscillators | |
/system_1_system_1m/oscillators/osc1_mod |
60 | 0–127 | continuous | Oscillators | |
/system_1_system_1m/oscillators/osc2_type |
61 | 0–127 | continuous | Oscillators | |
/system_1_system_1m/oscillators/osc2_range |
62 | 0–127 | continuous | Oscillators | |
/system_1_system_1m/oscillators/osc2_mod |
63 | 0–127 | continuous | Oscillators | |
/system_1_system_1m/general/pedal_hold |
64 | 0–127 | continuous | General | |
/system_1_system_1m/general/amp_tone |
69 | 0–127 | continuous | General | |
/system_1_system_1m/filter/hpf_cutoff |
79 | 0–127 | continuous | Filter | |
/system_1_system_1m/filter/env |
81 | 0–127 | continuous | Filter | |
/system_1_system_1m/filter/key |
82 | 0–127 | continuous | Filter | |
/system_1_system_1m/envelopes/filter_attack |
83 | 0–127 | continuous | Envelopes | |
/system_1_system_1m/envelopes/filter_decay |
84 | 0–127 | continuous | Envelopes | |
/system_1_system_1m/envelopes/filter_sustain |
85 | 0–127 | continuous | Envelopes | |
/system_1_system_1m/envelopes/filter_release |
86 | 0–127 | continuous | Envelopes | |
/system_1_system_1m/envelopes/amp_attack |
89 | 0–127 | continuous | Envelopes | |
/system_1_system_1m/envelopes/amp_decay |
90 | 0–127 | continuous | Envelopes | |
/system_1_system_1m/fx/reverb |
91 | 0–127 | continuous | FX | |
/system_1_system_1m/fx/delay |
94 | 0–127 | continuous | FX | |
/system_1_system_1m/envelopes/amp_sustain |
96 | 0–127 | continuous | Envelopes | |
/system_1_system_1m/envelopes/amp_release |
97 | 0–127 | continuous | Envelopes | |
/system_1_system_1m/oscillators/osc1_variant_toggle |
105 | 0–1 | switch | Oscillators | |
/system_1_system_1m/oscillators/osc2_variant_toggle |
106 | 0–1 | switch | Oscillators | |
/system_1_system_1m/oscillators/osc2_ring |
111 | 0–127 | continuous | Oscillators | |
/system_1_system_1m/oscillators/osc2_sync |
112 | 0–127 | continuous | Oscillators | |
/system_1_system_1m/general/mixer_osc_type |
113 | 0–127 | continuous | General | |
/system_1_system_1m/general/mixer_noise_type |
114 | 0–127 | continuous | General | |
/system_1_system_1m/filter/type |
115 | 0–127 | continuous | Filter | |
/system_1_system_1m/general/legato |
116 | 0–127 | continuous | General | |
/system_1_system_1m/lfo/key_trigger |
117 | 0–127 | continuous | LFO | |
/system_1_system_1m/general/tempo_sync |
118 | 0–127 | continuous | General | |
/system_1_system_1m/general/mono |
119 | 0–127 | continuous | General |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /system_1_system_1m/note/on <note> <velocity>, /system_1_system_1m/cc/<number> <value>, /system_1_system_1m/pitchbend <0-16383>, /system_1_system_1m/program_change <n>.
Limitations¶
CC/NRPN only. SysEx (preset management, display control, bulk dump/load, vendor-proprietary opcodes) is NOT covered by pencilresearch. To extend this device with SysEx, sniff the vendor editor, add `sysex.header/footer` + `commands` blocks, and use `update_device.md` PR template.
Frequently asked questions¶
Which MIDI CC controls the filter cutoff on the Roland System-1 (System-1M)?
CC 3 (0–127), named /system_1_system_1m/filter/lpf_cutoff in SynthHub's map.
How many parameters of the Roland System-1 (System-1M) can be controlled over MIDI?
SynthHub's map of the Roland System-1 (System-1M) lists 56 MIDI CC parameters, each with its number, range and a readable name; the full chart is on this page.
Can an AI agent like Claude control the Roland System-1 (System-1M)?
Yes: SynthHub's hosted MCP server knows the Roland System-1 (System-1M)'s MIDI map, and its browser relay lets the agent send it parameter changes or load a sound, each sound change confirmed by you.