Former Sega Engineer Confirms Saturn Accelerator Was in Development

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📰 New article from RetroRGB

Former Sega Engineer Confirms Saturn Accelerator Was in Development

https://retrorgb.com/former-sega-engineer-confirms-saturn-accelerator-was-in-development.html

What Happened:

A long-rumored Sega Saturn graphics accelerator—codenamed Project TRIP—was real, and former Sega engineers have finally confirmed it in a detailed new interview with Beep21, reported by Retro RGB and SHIRO!.

Why It Matters:

The TRIP accelerator, spearheaded by ex-Hitachi engineer Junichi Naoi, was developed in 1996 with the goal of bringing high-end 3D arcade games like Virtua Fighter 3 and Shenmue to the Saturn. Naoi, who helped design the SH-2 CPU in the base Saturn, proposed using Hitachi’s more powerful SH-3E chip (with floating-point support for 3D math) to boost performance. The team even ran full simulations—completed by January 1997—but the project was quietly shelved before reaching production.

Key Details:

  • The hardware likely would’ve plugged into the Saturn’s cartridge slot, much like the 32X.
  • It would’ve handled polygon rendering while the Saturn’s existing chips managed background layers and UI—a technically complex but ambitious hybrid approach.
  • Developers like Yu Suzuki (Shenmue) and Keiji Okayasu (Virtua Fighter 3) designed games specifically around TRIP’s capabilities.
  • In a rare public mea culpa, Kenji Tosaki admitted in 2026 he’d previously denied the project’s existence online—calling it a “misstatement.”

What’s Next:

The Beep21 series is ongoing—this first part ends mid-story, promising more on how far TRIP got and why it was canceled. For hardcore Sega fans, hardware tinkerers, or retro tech historians: this is gold.

—Want the full scoop? Support Beep21’s deep-dive series via subscription.

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