A few years back I was playing around with the Sound Manager and an
oscilloscope routine (from David Philip Oster). Basically, this
grabs 512 bytes of data from the default sound input and maps it
into a waveform on a 256 high x 512 wide bitmap.
I recently tried compiling/running the same code on my PowerBook G3
and, while it works, the mapping isn't happening correctly - I see
the first half of the sampled sound squished into the top & bottom
5% of the "scope" screen with nothing in the middle (whereas the
waveform should be centered ...