# Sound Blaster AE-9: reconstructing Linux control from Windows driver analysis

> Sound Blaster AE-9 Linux support reconstructs card and Audio Control Module behavior using static analysis of Creative's Windows drivers and hardware observations. The included investigations document CtxHda.sys, CtxHdb.sys, and the ACM's SysEx-framed UART protocol; the driver implements selected playback and controls.

- Type: Case study
- Targets: Binary · Protocol
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-06
- Added to the catalog: 2026-11-06
- Original resource: <https://github.com/verzic/sb-ae9>
- Primary source: <https://github.com/verzic/sb-ae9/blob/cbfef7e0de0b90915793715d13ba5b6c79cd5ea9/docs/reverse-engineering/ctxhda-acm-analysis.md>
- Catalog page: <https://awesomerea.org/resources/sb-ae9-case/>
- Record JSON: <https://awesomerea.org/resources/sb-ae9-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/sb-ae9-case/index.md)

## Requirements & limits

- **Prerequisites:** Linux kernel 6.17 or newer, headers, DKMS, build tools, PipeWire, and WirePlumber are specified.
- **Prerequisites:** A Creative driver package is needed to extract a DSP firmware segment locally.
- **Limits:** The author reports support for 7 of 16 listed features across the card and Audio Control Module; recording is disabled because opening capture hard-locked the test machine.
- **License:** GPL-2.0 license.

## Primary sources

1. <https://github.com/verzic/sb-ae9/blob/cbfef7e0de0b90915793715d13ba5b6c79cd5ea9/docs/reverse-engineering/ctxhda-acm-analysis.md>
2. <https://github.com/verzic/sb-ae9/blob/cbfef7e0de0b90915793715d13ba5b6c79cd5ea9/README.md>
3. <https://github.com/verzic/sb-ae9/blob/cbfef7e0de0b90915793715d13ba5b6c79cd5ea9/docs/reverse-engineering/ctxhdb-analysis.md>

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## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.