SysEx Import / Export#

The Cosmo PD-101 can import Casio CZ-101 SysEx patch dumps into the preset library.

What is SysEx?#

System Exclusive MIDI messages. A canonical CZ-101 patch occupies 264 raw bytes: a 256-byte nibble-encoded payload plus its SysEx framing and header.

Importing a CZ-101 Patch#

• From files: Open the preset library and click Import, then select one or more .syx, .json, or .toml files.
• By drag and drop: Drag files anywhere over the open preset library. Valid files are imported even if another file in the batch is invalid.
• A single .syx file may contain multiple concatenated CZ messages; each message becomes its own preset.

Decoding Process#

MIDI SysEx (264 bytes) -> Nibble-pair decode (128 logical bytes) -> Section parser -> Parameter mapping -> Convert to Cosmo format -> Load.

Internal Representation#

Sections 1-2: Patch name. Sections 3-20: Algorithm/waveform. Sections 21-22: Envelope data. Sections 23-24: LFO/modulation. Section 25: Performance settings.

Compatible Patch Sources#

CZ-101 Librarian, SysexData.com, hardware CZ-101 (direct MIDI), CZ-Explorer.

Known Limitations#

Quick Reference#

Format	Extension	Contents
SysEx dump	.syx	Raw MIDI SysEx data
Cosmo preset	.json	Full preset including FX and modulation

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