>From: "Charles M. Hannum" <mycroft@MIT.EDU>
>Date: 02 Apr 1996 20:53:50 -0500
>
>blymn@awadi.com.au (Brett Lymn) writes:
>
>> Hmmm I may be about to put my foot in my mount (nothing new here ;-)
>> but I don't know of too many PCI sound cards.  So I think that we will
>> need the bounce buffers for some things.

I have seen a combined video+audio PCI card.  Not on the shelves,
though; it's an eval board from Brooktree.

>Sounds cards are a good example of where `bounce buffers' are exactly
>the wrong thing to do.  It means you can't ever mmap() the sound
>buffer.

Bounce-buffering is only needed by bus master cards, yes?  I've
*never* seen a bus-mastering sound card.
-- 
Mike Long <mike.long@analog.com>     <URL:http://www.shore.net/~mikel>
VLSI Design Engineer         finger mikel@shore.net for PGP public key
Analog Devices, CPD Division          CCBF225E7D3F7ECB2C8F7ABB15D9BE7B
Norwood, MA 02062 USA       (eq (opinion 'ADI) (opinion 'mike)) -> nil