Emulator

1. Game Name and ID (as it appears in right click > properties: "GZ2P01",
   "RSBE01", etc):

All games (core dolphin issue)

2) What is the expected output? What do you see instead?

I have an original Wiimote from a launch-day US Wii system, reported as RVL-CNT-01. Using this Wiimote with Dolphin on OS X broke with 3.0-418. There are a few threads about this already, see for example http://forums.dolphin-emulator.com/showthread.php?tid=21780

I was able to fix this by downloading the source, and changing back to sending commands over the control channel, rather than the interrupt channel, in Wiimote::IOWrite in IOdarwin.mm.

This change to the interrupt channel is mentioned In the release notes: "Send commands on the interrupt channel, not the control channel. The new Wii Remotes require this; old ones are compatible with this. Note: 3rd party Wii Remots are untested with this change; the hope is they are still functional."

It appears that very old wiimotes are not compatible with this change. Probably the correct solution is to detect what version wiimote it is, and change channels accordingly.

3) Did the game ever work correctly (i.e. not have this problem) on an
earlier version of dolphin? Please specify the exact revision when the
problem began.

Yes, before 3.0-418

4) What steps will reproduce the problem?

1. Load any dolphin 3.0-418 or later, and try to connect an original US wiimote.

5) What version of dolphin are you using (32bit/64bit along with the
version as it appears in the title bar, etc)?
On what operating system, drivers, and hardware? Be sure to list OS,
graphics driver information, and video card model if you are having
graphics problems, for example.

3.0-427
Mac OS X Lion 10.7.3
iMac 27", early 2010