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Subject: Re: Read Bandwidth from PCI to Triton II?
To: hasty@rah.star-gate.com (Amancio Hasty)
Date: Thu, 25 Jul 1996 17:25:08 -0500 (CDT)
From: "Lars Jonas Olsson" <jonas@mcs.com>
Cc: hackers@freebsd.org
In-Reply-To: <199607252213.PAA03186@rah.star-gate.com> from "Amancio Hasty" at Jul 25, 96 03:13:41 pm
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> 
> >From The Desk Of "Lars Jonas Olsson" :
> >  Has anyone managed to get higher bandwidth from any PCI board
> > with a Triton or Triton II based computer?
> 
> Oops, I forgot to answer this question.
> 
> Yeah, with the matrox meteor and PCI to PCI to a video frame buffer
> such an S3 968 I routinely get about 37MBs 8) 
> I would love to connect two matrox meteors cards and have them
> blast the screen at full speed to see what happens. If I am not
> mistaken Jim Lowe has done this...
> 
> The matrox meteor driver has code to support this feature look for
> METEOR_TEST_VIDEO and I modify "tv" to support this mode.
> 
> My system is a P100 and a Triton I ASUS motherboard.
> 
> 	Enjoy,
> 	Amancio
> 

 In other mail you asked what a Raptor does and costs. It is mostly
for capturing data from digital greyscale cameras. It is a little bit
old now, it does not do DMA or bus-mastering. You have to read the
data via memcpy or similar from the board. The model of the board I
have costs ~$3700 with digital camera interface and 4MB VRAM.

 The Meteor does bus-mastering so that speed can not be compared.
I'm interested in memcpy speeds from PCI cards.

Jonas

PS The Matrox Pulsar is a competing product with the the BitFlow
Raptor.  Anyone have a driver for it? The Pulsar only costs ~$2000.