Developed Makaron and later the GDEMU optical-drive replacement.

In the emulation story
Deunan created Makaron, a Dreamcast and NAOMI emulator. Preserved release notes record work on graphics, controls and Windows CE games. The GDEMU project represents a different application of hardware knowledge: replacing the optical drive in a real Dreamcast, rather than emulating the entire console on a computer. Project record.
The game and the machine
Makaron’s 2009 release notes reveal a developer impatient with avoidable configuration mistakes. Behind the irritation was a practical concern: replacing the wrong files could destroy a working controller or VMU setup.
Deunan’s later GDEMU solves a different problem. The original Dreamcast still executes its own software; a replacement supplies the optical drive’s role. Keeping a real machine usable and recreating that machine inside a PC are related interests, but they are different kinds of engineering.
Deunan in the History of Video Game Emulation
Dreamcast emulation: 2009 — Developed Makaron and later the GDEMU optical-drive replacement.
Related People
Anthony Pesch (inolen) — Created redream, emphasizing an approachable way to play Dreamcast games.
flyinghead — Develops Flycast, building on the nullDC and Reicast lineage.
blueminder — Develops Flycast Dojo for online matches, practice and replays.
Retro Replay Retro Gaming History, Reviews & Emulation