SysEx Import / Export#

The Cosmo PD-101 can import Casio CZ-101 SysEx patch dumps.

What is SysEx?#

System Exclusive MIDI messages. CZ-101 stores each patch as a 464-byte SysEx dump (256-byte nibble-encoded payload).

Importing a CZ-101 Patch#

• From MIDI: Connect device or load .mid file with SysEx.
• From File: Click "Import SysEx", select .syx or .mid.

Decoding Process#

MIDI SysEx (464 bytes) -> Nibble-pair decode (256 bytes) -> Section parser (25 sections) -> 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.

Exporting Presets#

Select preset, click "Export as SysEx", save as .syx.

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
MIDI file	.mid	Standard MIDI with embedded SysEx
Cosmo preset	.json	Full preset including FX and modulation

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