Compatibility with two-button C64 controllers - Ideas and Suggestions https://www.icode.com/community/ideas-and-suggestions/compatibility-with-two-button-c64-controllers/ iCode Discussion Board en-US Fri, 10 Apr 2026 11:44:00 +0000 wpForo 60 RE: Compatibility with two-button C64 controllers https://www.icode.com/community/ideas-and-suggestions/compatibility-with-two-button-c64-controllers/#post-118 Sat, 25 Oct 2025 18:33:19 +0000 Sorry pin 9 and 5 are used for paddles and currently the firmware expects to only see paddles connected to those pins. there might be some way to programmatically accomplish this but it would require a firmware update.  I will ad this to possible enhancement list to consider in the future.

]]> Ideas and Suggestions Ali Jani https://www.icode.com/community/ideas-and-suggestions/compatibility-with-two-button-c64-controllers/#post-118 Compatibility with two-button C64 controllers https://www.icode.com/community/ideas-and-suggestions/compatibility-with-two-button-c64-controllers/#post-114 Mon, 15 Sep 2025 04:54:43 +0000 Hi, is it possible for the iCode Uno/Duo Plus to recognize Commodore 64 controllers with two buttons?  These are not very common (they came out with the ill-fated Commodore 64GS game console) but there are quite a few games that make use of the extra button.  The first fire button connects pins 6 and 8 as usual.  The second fire button connects pin 9 (PotX) to pin 7 (+5V).  It would be great if this could be recognized by your adapter.  Thanks!

More information on these controllers is at: https://github.com/crystalct/5plusbuttonsJoystick

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