Chase Bliss CXM 1978: MIDI CC, NRPN and OSC map¶
The Chase Bliss CXM 1978 as named OSC addresses — 19 CC — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | Chase Bliss CXM 1978 |
|---|---|
| Vendor | Chase Bliss |
| OSC prefix | /cxm_1978 |
| 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/chase-bliss/cxm_1978.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/chase-bliss/cxm_1978.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 cxm_1978: ask “what can the Chase Bliss CXM 1978 do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (19)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/cxm_1978/faders/bass |
14 | 0–127 | continuous | Faders | |
/cxm_1978/faders/mids |
15 | 0–127 | continuous | Faders | |
/cxm_1978/faders/cross |
16 | 0–127 | continuous | Faders | |
/cxm_1978/faders/treble |
17 | 0–127 | continuous | Faders | |
/cxm_1978/faders/mix |
18 | 0–127 | continuous | Faders | |
/cxm_1978/faders/pre_delay |
19 | 0–127 | continuous | Faders | |
/cxm_1978/arcade_buttons/jump |
22 | 1–3 | continuous | Arcade buttons | |
/cxm_1978/arcade_buttons/type |
23 | 1–3 | continuous | Arcade buttons | |
/cxm_1978/arcade_buttons/diffusion |
24 | 1–3 | continuous | Arcade buttons | |
/cxm_1978/arcade_buttons/tank_mod |
25 | 1–3 | continuous | Arcade buttons | |
/cxm_1978/arcade_buttons/clock |
26 | 1–3 | continuous | Arcade buttons | |
/cxm_1978/performance/aux_perf_switch_1 |
28 | 0–127 | continuous | Performance | |
/cxm_1978/performance/aux_perf_switch_2 |
29 | 0–127 | continuous | Performance | |
/cxm_1978/performance/aux_perf_switch_3 |
30 | 0–127 | continuous | Performance | |
/cxm_1978/performance/aux_perf_switch_4 |
31 | 0–127 | continuous | Performance | |
/cxm_1978/other/preset_saving |
27 | 0–29 | continuous | Other | |
/cxm_1978/other/expression |
100 | 0–127 | continuous | Other | |
/cxm_1978/other/eom_unlock |
101 | 0–127 | continuous | Other | |
/cxm_1978/other/bypass |
102 | 0–127 | continuous | Other |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /cxm_1978/note/on <note> <velocity>, /cxm_1978/cc/<number> <value>, /cxm_1978/pitchbend <0-16383>, /cxm_1978/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.