NTT Data Keypad

The Super Famicom NTT Data Keypad (NDK10) is intended to be used in conjunction with the Super Famicom NTT Data Communication Modem. It adds 15 buttons to an otherwise-normal SNES controller.

Protocol
This controller extends the controller protocol to 32 bits to support the additional buttons. Bits 0-15 match the standard controller except with a different signature, while bits 16-31 match the last 16 bits of a Famicom Network Controller.

0 - B 1 - Y  2 - ᐊ / 前ページ (Previous page) 3 - ᐅ / 次ページ (Next page) 4 - Up 5 - Down 6 - Left 7 - Right 8 - A 9 - X 10 - L 11 - R 12 - (Always 0) 13 - (Always 1) 14 - (Always 0) 15 - (Always 0) 16 - 0 17 - 1 18 - 2 19 - 3 20 - 4 21 - 5 22 - 6 23 - 7 24 - 8 25 - 9 26 - * 27 - # 28 - . 29 - C 30 - (Always 0) 31 - 通信終了 (End communication) 32+ - (Always 1)