John Baldwin 1b40801722 - When acknowledging interrupts, write the value 0xff to the interrupt
status register rather than 0.  Without this, a single hardware volume
  event triggers an interrupt storm.
- Implement hardware volume control for the Maestro chips.  This version
  only handles the case where both channels are adjusted at the same time.

Reviewed by:	cg
2001-01-03 01:32:57 +00:00
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