Vice Dual Sid patch

Here is my crappy patch to Vice 1.21 to add my special 6581 + 8580 stereo output. You can listen to some examples.

After applying the patch, you will just have to select the dual sid option (note that this will also disable the previous dual sid functionality). You will now have both 6581 and 8580 in separate channels, in real time and record mode. Enjoy!

edit: updated patch for Vice 2.0

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