[coreboot] USB debug cables and emulation

Joseph Smith joe at settoplinux.org
Thu Jun 26 18:48:25 CEST 2008

>> I read somewhere you could make one, but I don't know how difficult that
>> would be. I was always wondering if you could just use two USB -> Serial
>> adapters with a null modem cable in the middle??
> Nope, won't work. You need a USB device that explicitly understands USB 
> debug mode. In this mode you don't have to set up the BARs (ie no memory 
> required) to talk USB.
This guy was able to get it working with one USB -> Serial adapter
(reversed) on an iMac (with ICH7) using Solaris as the host:


Joseph Smith

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