SNES controller

The SNES controller is very similar to the NES' standard controller, with a collection of digital inputs that are latched and read in series. With a suitable adapter, reading the SNES controller is like reading an NES controller with 4 extra buttons.

The 16 bit report:

bit	input
0	B
1	Y
2	Select
3	Start
4	Up
5	Down
6	Left
7	Right
8	A
9	X
10	L
11	R
12	0
13	0
14	0
15	0

Note that the first 8 values map directly to the original NES controller's 8 inputs (SNES B = NES A, and SNES Y = NES B).

The last 4 bits will always read 0 from a standard SNES controller. Other values here may indicate other devices.

After the 16 bit report, subsequent bits will read as 1.

See also

• Controller port pinout
• Standard controller
• Controller reading
• SNES mouse