"When AMD pushed out its R600/700 3D code, we shared
that AMD would quickly be releasing these specifications, but they
didn't clear final review prior to the holidays. The R600 3D
register guide is 166 pages long and covers R600 shader
instructions, R700 shader instructions, shader textures, and
various other registers needed to program a 3D graphics driver.
This register guide is targeted solely for driver developers and is
not anything for end-users. If you are interested in the R600/700
3D register guide, it can be downloaded at X.Org.
"This register information was what AMD and Novell had used to
write the initial 2D/3D open-source code, so this guide should be
fairly complete and allow their new open-source stack to grow.
Within a few months we should see a modest open-source R600/700 3D
driver beginning to appear in the different desktop Linux