"In the next step towards open-source 3D support for the R500
and R600 GPUs (Radeon X1000 and Radeon HD 2000/3000), AMD has just
pushed its production microcode into the Mesa/DRM git tree. This is
the microcode found in the fglrx driver and it covers the Radeon
R100 to R600 product families.
"This microcode dump can be found in the Mesa/DRM git tree in
shared-core/radeon_cp.c. This file is made up of the microcode
(arrays made up of hex) for the R100, R200, R300, R420, RS600,
RS690, R520, R600, RV610, and RV620..."