did i damage my mega drive 3rd party jpad?

[megaloser]

Greetings, an odd thing to post on here, i tried to replace a 9 pin mega drive wire with a 9 pin extension cable. cutting it short (no pun) i definitely wired the wrong cables onto the wrong holes, times multiple and when connected the joypad registered a continuous signal, sometimes it was right and sometimes it was down, no buttons were pressed. no other input can be registered.
did i shortcurcuit my joypad? there is no visible damage on the board, save for a few slim marks and scratches, possibly age related.
there is a microchip on the board, too.

hotlink

https://picaxeforum.co.uk/threads/reading-the-sega-mega-drive-genesis-control-pads.27553/

thanks for reading.

[Bryce]

If you connected the 5V line to the wrong pin it may have damaged your controller, any other pin swap would cause strange effects, but no permanent damage.

Bryce.