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> On things that can do wrong with USB, > I agree that folks can get into software problems > at the host level. But I don't know what we can do > about that at the ATA level. Remember that in a bridge > ALL of the information we get to run the ATA protocol > is decoded from USB/SBP/etc... commands originally. Ata yes. Atapi no. For Atapi, the commands are copied raw out of a Usb CBW, out of a FireWire SBP-2 Orb. Ok maybe zeroes get added on the right side to complete a 12 or 16 byte packet. But that's still pretty raw. The more transparent an Atapi bridge is, the more broadly applicable a commodity, the CHEAPER a commodity, it can be. I'm trying to understand if a Usb2/AtapiUDma bridge can be as transparent as a Usb1/AtapiPio bridge. I thought the answer was "not quite" ... but then I saw "I think you are misunderstanding", so still I have hope. Pat LaVarre Subscribe/Unsubscribe instructions can be found at www.t13.org.
