選購 1394卡要注意~~~~~
由於成本較便宜和體積較小, 最近 apple 使用了 Agere fw 800 芯片 取代了之前所用的 TI 芯片, RME 証實有兼容問題, , MOTU 也出現同樣情況。 Hardware Alert: FireWire solutions with Agere FW chipHello,
as already stated in the thread 'Workaround for Fireface iMac Problem'
http://www.rme-audio.de/forum/viewtopic.php?id=974
there is a new FW 800 chip on the market from Agere, which seems to be incompatible (not only) to RMEs FireWire audio, and requires workarounds for successful operation.
The reason Apple used this chip instead of the former TI solution is easy to find: half the price and a lot smaller. So it is not astonishing that this chip now also begins to show up on Windows computers. We got our hands on a PCIe FireWire 800 card from Unibrain using this chip, and found the exact (!) same problems under Windows as under Mac OS X using this card.
Our examination of the problem showed that the Agere chip causes the Firefaces to issue a FireWire bus reset shortly after start of data transmission (isochronous mode). We tried a Motu 828 for comparison and found this to be affected as well (everything seemed to work, but playback did not start).
Therefore we have to declare this chip and all related products as incompatible, and expect a fix (if any) from Agere's side, by either firmware or driver updates.
Regards
Matthias Carstens
RME
as already stated in the thread 'Workaround for Fireface iMac Problem'
http://www.rme-audio.de/forum/viewtopic.php?id=974
there is a new FW 800 chip on the market from Agere, which seems to be incompatible (not only) to RMEs FireWire audio, and requires workarounds for successful operation.
The reason Apple used this chip instead of the former TI solution is easy to find: half the price and a lot smaller. So it is not astonishing that this chip now also begins to show up on Windows computers. We got our hands on a PCIe FireWire 800 card from Unibrain using this chip, and found the exact (!) same problems under Windows as under Mac OS X using this card.
Our examination of the problem showed that the Agere chip causes the Firefaces to issue a FireWire bus reset shortly after start of data transmission (isochronous mode). We tried a Motu 828 for comparison and found this to be affected as well (everything seemed to work, but playback did not start).
Therefore we have to declare this chip and all related products as incompatible, and expect a fix (if any) from Agere's side, by either firmware or driver updates.
Regards
Matthias Carstens
RME