Weird... work perfectly here with 10K external pull-up (EasyPIC 4) but push-buttons... big deal... While i'm still awake, could you post your code so i can test it here?
Maybe not a bad idea to start a new thread as it's a out of topic from the original.
PS: for your tests.. did you left one or the other pin floating or you had a pull-up attach to?




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