Yes, we've done that.

If you don't need to scatter the data bus pins, you can do it with this ...
http://www.picbasic.co.uk/forum/show...=2388#post2388

Or if the data bus need to be scattered, there's this thread ...

In particular post #35, but read the whole thread.
http://www.picbasic.co.uk/forum/showthread.php?t=7596