Phoronix: Hard-Coded ATI RV770 Support Arrives

Earlier this week we reported on RadeonHD driver support for the RV770 with the Radeon HD 4850 and Radeon HD 4870 graphics cards. This support arrived within the RadeonHD driver's new AtomBIOS branch that relies upon ATI's video BIOS abstraction layer as opposed to "banging the registers" and interfacing with the hardware directly...

http://www.phoronix.com/vr.php?view=NjU4Ng