Genesis/SMS/Atari controller to Wii/Gamecube adapter (v2)

An adapter cable for using a Genesis, SMS or Atari-compatible controller on a Wii or Gamecube.

Description

With this adapter, you can use a Genesis, SMS or Atari-style controller or joystick on a Wii/Gamecube. Ideal for Wii virtual console games!

New, more compact version! (Functionality is unchanged)

Specifications:

Supports Genesis controllers, 3 or 6 buttons (and compatibles)
Support Sega Master System (SMS) controllers (and compatibles)
Supports Atari-style one-button controllers
Cable length: 1.5m. (approx.)

The button mappings are fixed and depend on the type of controller. See below for a table showing button mapping information.

Important: Requires a Wii with Gamecube ports.
Note: The type of controller is auto-detected when the adapter powers-up.

Ordering

Buy here

In stock : Ships within 5 business days unless noted otherwise (out of stock, pre-order, holidays, etc).

For the new year holidays, orders placed from December 19 (2025) to January 8 (2026) will only be shipped after January 9.

Item #	ADAP-DB9-WII_v2
Description	Genesis/SMS/Atari controller to GC/Wii adapter (v2)
Price	$24.49
Country of origin	Japan

We normally ship within 5 days (excluding week-ends and holidays) after payment.
Prices are in US dollars and are subject to change without notice.

Button mappings

The adapter emulates a Gamecube compatible controller. The button mapping is as follows:

GC/Wii	Genesis	SMS	Atari-style
B	A	1
A	B	2	Fire
X	C
L	X
Y	Y
R	Z
Start	Start
Dpad	Dpad	Dpad	Dpad/stick
Z	Mode

Important: Requires a Wii with Gamecube ports.
Note: The type of controller is auto-detected when the adapter powers-up.

Compatibility list

IMPORTANT: This is not a complete list. If something does not appear here, it simply means that we did not get the chance (or the idea) to test it, or that no one let us know that it works.

Help us improve this page by sending test results by email to support@raphnet-tech.com
Thanks!

Tested Controllers

Show list...

Model	Tested by	Supported	Comments
Sega 3 Button model 1650	raphnet.	Yes
Sega 6 Button models MK-1470, MK-1653	raphnet.	Yes
Sega SMS 2 Button model 3020	raphnet.	Yes
Asciiware fighter stick SG-6	raphnet.	Yes
Speedlink Competition Pro SL-6602-SER	raphnet.	Yes
Retro-bit Genesis 6-Button	User	Partial	Functions as a 3-Button controller
Retrobit Sega Genesis 2.4GHz Wireless controller	User	Partial	Detected as a 2-Button SMS controller
8Bitdo M30 2.4G Wireless controller	User	Partial	Detected as a 2-Button SMS controller
SMS Paddle	raphnet.	No	Not supported.

Supported Wii games

Show list...

Game/software	Tested by	Supported	Comments
Nintendo Virtual Console title: Comix zone	raphnet.	Yes
Homebrew channel	raphnet.	Yes
Snes9xGX 4.3.2, 4.3.7	raphnet.	Yes
Genesis Plus GX 1.7.4, 1.7.5	raphnet.	Yes
FCE Ultra GX 3.3.4, 3.3.9	raphnet.	Yes
Visual Boy Advance GX 2.3.6	raphnet.	Yes
Not64 2016-12-09	raphnet.	Partial	Usefulness limited due to missing buttons and analog axes...

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