In XP6A_INF\CA_76826.inf I added:
"ATI Radeon HD 4800 Series" = ati2mtag_M9x8, PCI\VEN_1002&DEV_944A
The label ati2mtag_M9x does not exist in the .inf, that's probably why driver's installation is not complete. You have to use on of the existing chipset's labels:
"ATI Radeon HD 4850
VTX3D" =
ati2mtag_R7X, PCI\VEN_1002&
DEV_944ANotice that I added the VTX3D to the name so there are not duplicated names in the .inf.
in CA_76826.INI and INSTALL.INI:
,0x944A:0x30001787
at the end of the R6_43=DriverPath_R6_43 line.
I always add the new ID to the end of the last label. Here it's "DriverPath_R6_78". It's more convenient as you know that all the additions are at the end of the file.
You don't need to add the subsystem number, only the main device is required and thus it makes the patch more generic.
R6_78=DriverPath_R6_78,0x4152:0x001F18D4,0x7166:0x3001148C,0x4173:0x7C21174B,0x5E6B,0x9443,0x71C3,0x3E50:0x001E1043,0x5E6B:0x0651174B,0x9460,0x9495,
0x944AApart from CA_76826.inf, CA_76826.INF, and INSTALL.INI, you also need to edit
Driver.dat:
Req_ASIC=7142,7146,7162,.........,5D77,9460,9495,
944ATry reinstalling the driver after that.