Editing Atari interface (section)

===Different signalling===
Incompatible, that would require an active [[converter]] to connect:
* [[Serial interface|Serial mice]] for the IBM PC, with RS-232 signalling.
* Some ''Intellivision'' consoles have a DE-9 plugs for each of its controllers. The joystick has 16 directions, there are three buttons and a keypad — each producing a [[scancode]] shorted to ground (pin 5). Buttons and directions don't interfere though. An adaptor from an Atari joystick would require some logic and perhaps external power.<ref>Jay's Video Game Page ([http://arcarc.xmission.com/ ARCade ARChive])—[http://arcarc.xmission.com/Web%20Archives/Deathskull%20%28May-2006%29/games/tech/intvcont.html Intellivision Controller Pinouts]. Dated 1998-06-28. Retrieved 2018-06-11</ref>. The ''Intellivision Flashback'' console also has DE-9 connectors but the pinout is different.{{citation needed}}
* Gamepads for the ''3DO'' console. They used serial communication for up to eight controllers daisy-chained from the same host port. Each also had a headphone jack with stereo sound.<ref>Archive.org—[http://web.archive.org/web/20031210153930/http://lillith.sk.tsukuba.ac.jp/~kashima/games/3do_tr.pdf 3DO Transmitter for SST2X] Circuit schema by H.Kashima. Snapshot from 2003-12-10.</ref><ref>Youtube—[https://youtu.be/zYEePs_Gv0M Classic Game Room - PANASONIC 3DO Controller Review]. Published 2011-06-27. Watched 2018-06-07</ref>
* Several clones of the Nintendo Famicom — "Famiclones" used DE-9 ports with Nintendo's serial protocol.