NintendoAge http://nintendoage.com/forum/ -Sqooner Expansion Port As Player 1? http://nintendoage.com/forum/messageview.cfm?catid=106&threadid=188810 2019-09-26T20:06:14 -05.00 ReiNanto 4
Just putting it out there, I know it is not for everyone. I believe I found someone making them for sale. The price was too steep for me, $50 I think, but ended up making it for $15(?). ]]> Expansion Port As Player 1? http://nintendoage.com/forum/messageview.cfm?catid=106&threadid=188810 2019-09-26T17:13:50 -05.00 ReiNanto 4 Expansion Port As Player 1? http://nintendoage.com/forum/messageview.cfm?catid=106&threadid=188810 2019-09-26T12:54:30 -05.00 ReiNanto 4
https://www.instagram.com/p/BkY6MI0hjl5/?igshid=1t6ezhlm8n46g

Edit:
Deleted pinout diagram image, it says only for use on Famicom world, link to message thread on Famicom world that has the pinout diagram . They are wiring for the reverse of what you are looking, but it works both ways, just ignore controller 2 wiring. 

https://www.famicomworld.com/forum/index.php?PHPSESSID=k6sfG7J4HLmhie45FJ76,0&topic=3583.msg55602#msg55602. ]]> Expansion Port As Player 1? http://nintendoage.com/forum/messageview.cfm?catid=106&threadid=188810 2019-09-26T12:17:03 -05.00 ReiNanto 4 Using firmware v1.40b4 if that makes any difference. ]]>