Virtual Boy controller

The Virtual Boy controller has an NES-compatible protocol, and has been used in homebrew games.

• Spook-O'-Tron
• Candelabra - Estoscerro

After strobing the controller, the following 16 bits can be read from the data line:

 0 - Right D-pad Down
 1 - Right D-pad Left
 2 - Select
 3 - Start
 4 - Left D-pad Up
 5 - Left D-pad Down
 6 - Left D-pad Left
 7 - Left D-pad Right

 8 - Right D-pad Right
 9 - Right D-pad Up
10 - Button L (opposite left D-pad)
11 - Button R (opposite right D-pad)
12 - Button B
13 - Button A
14 - Always 1
15 - Low battery signal

References

• VB Sacred Tech Scroll: Virtual Boy Specifications
• PlanetVB: Documents
• Sly Dog Studios: Candelabra - Estoscerro demo available
• Forum post: Spook-o'-tron - Virtual Boy Controller Fun