On 4/10/07, Dmitry Baikov <dsbaikov(a)gmail.com>
wrote:
PCMCIA is great for latency. That
"extra" PCI bridge does NOT affect
audio latency.
Firewire latencies are bigger than PCI/PCMCIA and will always be. Ask
Pieter Palmers for details.
So if you are for low latency, PCI/PCMCIA is unbeatable.
If you want numbers, I can provide them for Echo Indigo IO and RME
MultifaceII.
Ask somebody to jdelay their Firewire card.
Is anybody using a firewire card through a PCMCIA adpter? I hesitate
to use a firewire card because I want something that's bus-powered,
but this laptop only has a 4-pin firewire. I'm leaning perhaps to the
Edirol UA-25, but the presonus Firebox is 4in/6out instead of 2in/2out
(Analog) so if it's not a problem to run it through a PCMCIA firewire
card then I think that's what I would go with. Both seem to have
decent Linux support, as far as I can tell.
I use both onboard 1394 and Cardbus 1394 for my tests, and I've never
seen a difference. But I have to admit that I haven't been doing latency
comparisons between the two that would survive scientific proofing.
Note that there might be exceptions, but:
PCMCIA or Cardbus adapters are also unable to provide bus power,
notwithstanding the fact that they do have 6-pin adapters. The
PCMCIA/cardbus bus doesn't provide the power needed for the FireWire
bus, so these adapters can't provide it.
Pieter