INDEPENDENT MiSTer FPGA EXPERIMENTS THE TURBO CLUB · EST. 2026
TO THE LIMIT

A MOST PARTICULAR FPGA EXPERIMENT.

EST. 2026 · THE TURBO COLLECTION

TO THE
LIMIT.

A little more headroom, if you please.
Experimental turbo cores for your MiSTer FPGA.

EXPLORE THE CORES ↓A NOTE ON TURBO ↘

REAL FPGA BUILDS + OPEN SOURCE + ROOM TO EXPERIMENT

THE TURBO CLUB · MiSTer DIVISIONREV. 01
EXTRA CYCLES AVAILABLE

A considered pace: CPU Turbo defaults to Off.

CHAPTER I / THE COLLECTION

CHOOSE YOUR CORE.

Two custom builds on the grid.
More experiments as they earn their place.

COMMUNITY SPOTLIGHT

N64 94MHz+

Corn's turbo work, built on Robert Peip's N64 core. A separate community project, linked here with credit to its creators.

VISIT UPSTREAM ↗

CHAPTER II / THE MECHANICS

TURN UP
THE HEADROOM.

Turbo gives eligible CPU cycles a shorter divider. It doesn't change the video refresh rate or make every game 50% faster.

ROM reads can still wait on memory. Timing-sensitive games may behave differently. The stock-speed setting is always one menu away.

TRY THE SELECTOR →
IDEAL CPU RATE, BEFORE MEMORY WAITS
CPU CONTROL PANEL
10.739MHz
HIGH-SPEED DIVISOR 4STOCK BASELINE 7.159 MHz

+50% mode: eligible cycles use 4 master clocks. Memory waits still apply.

Illustration only. This control does not configure your MiSTer.

CHAPTER III / ARRIVAL INSTRUCTIONS

LOAD. TWEAK. PLAY.

PLEASE MAKE YOURSELF AT HOME.
  1. 01

    KEEP A BACKUP.

    Keep a copy of your stock TurboGrafx RBF. Copy the experimental RBF into _Console and launch it.

  2. 02

    SET YOUR PACE.

    Open Hardware → CPU Turbo. Start at +20%, then compare +50%. Extra sprites are enabled by default. Select Normal if you want the original sprite limit.

  3. 03

    HIT A BUSY SCENE.

    Try the same Ninja Spirit scene at Off and turbo. Compare slowdown, sound, controls and stability. Return to Off if issues appear.

✓
BUILT, CHECKED, STILL EXPERIMENTAL.

10 CPU regression scenarios + 900 SDRAM reads passed. The Extra-default revision also passed its final constrained multi-corner timing checks. Full game and CD compatibility remain open.

REPORT A RESULT ↗
BUILT ON THE SHOULDERS OF THE COMMUNITY.

TurboGrafx source: MiSTer-devel/TurboGrafx16_MiSTer · base 827d45f. Original authors and licenses are preserved in the source download. N64 turbo credit: Corn; original N64 core: Robert Peip (FPGAzumSpass). No games, ROMs or BIOS files included.