diff -Naur xf86-video-ati.orig/src/ati_pciids_gen.h xf86-video-ati/src/ati_pciids_gen.h
--- xf86-video-ati.orig/src/ati_pciids_gen.h	2008-06-19 14:36:59.000000000 -0400
+++ xf86-video-ati/src/ati_pciids_gen.h	2008-06-19 14:38:40.000000000 -0400
@@ -378,3 +378,4 @@
 #define PCI_CHIP_RS780_9611 0x9611
 #define PCI_CHIP_RS780_9612 0x9612
 #define PCI_CHIP_RS780_9613 0x9613
+#define PCI_CHIP_RV770_9442 0x9442
diff -Naur xf86-video-ati.orig/src/radeon_chipinfo_gen.h xf86-video-ati/src/radeon_chipinfo_gen.h
--- xf86-video-ati.orig/src/radeon_chipinfo_gen.h	2008-06-19 14:36:59.000000000 -0400
+++ xf86-video-ati/src/radeon_chipinfo_gen.h	2008-06-19 15:37:58.000000000 -0400
@@ -298,4 +298,5 @@
  { 0x9611, CHIP_FAMILY_RS780, 0, 1, 0, 0, 1 },
  { 0x9612, CHIP_FAMILY_RS780, 0, 1, 0, 0, 1 },
  { 0x9613, CHIP_FAMILY_RS780, 0, 1, 0, 0, 1 },
+ { 0x9442, CHIP_FAMILY_RV770, 0, 1, 0, 0, 1 },
 };
diff -Naur xf86-video-ati.orig/src/radeon_chipset_gen.h xf86-video-ati/src/radeon_chipset_gen.h
--- xf86-video-ati.orig/src/radeon_chipset_gen.h	2008-06-19 14:36:59.000000000 -0400
+++ xf86-video-ati/src/radeon_chipset_gen.h	2008-06-19 14:39:40.000000000 -0400
@@ -298,5 +298,6 @@
   { PCI_CHIP_RS780_9611, "ATI Radeon 3100 Graphics" },
   { PCI_CHIP_RS780_9612, "ATI Radeon HD 3200 Graphics" },
   { PCI_CHIP_RS780_9613, "ATI Radeon 3100 Graphics" },
+  { PCI_CHIP_RV770_9442, "ATI Radeon HD 4850" },
   { -1,                 NULL }
 };
diff -Naur xf86-video-ati.orig/src/radeon.h xf86-video-ati/src/radeon.h
--- xf86-video-ati.orig/src/radeon.h	2008-06-19 14:36:59.000000000 -0400
+++ xf86-video-ati/src/radeon.h	2008-06-19 14:44:55.000000000 -0400
@@ -287,6 +287,7 @@
     CHIP_FAMILY_RV620,
     CHIP_FAMILY_RV635,
     CHIP_FAMILY_RS780,
+    CHIP_FAMILY_RV770,
     CHIP_FAMILY_LAST
 } RADEONChipFamily;
 
diff -Naur xf86-video-ati.orig/src/radeon_pci_chipset_gen.h xf86-video-ati/src/radeon_pci_chipset_gen.h
--- xf86-video-ati.orig/src/radeon_pci_chipset_gen.h	2008-06-19 14:36:59.000000000 -0400
+++ xf86-video-ati/src/radeon_pci_chipset_gen.h	2008-06-19 15:00:41.000000000 -0400
@@ -298,5 +298,6 @@
  { PCI_CHIP_RS780_9611, PCI_CHIP_RS780_9611, RES_SHARED_VGA },
  { PCI_CHIP_RS780_9612, PCI_CHIP_RS780_9612, RES_SHARED_VGA },
  { PCI_CHIP_RS780_9613, PCI_CHIP_RS780_9613, RES_SHARED_VGA },
+ { PCI_CHIP_RV770_9442, PCI_CHIP_RV770_9442, RES_SHARED_VGA },
  { -1,                 -1,                 RES_UNDEFINED }
 };
diff -Naur xf86-video-ati.orig/src/radeon_pci_device_match_gen.h xf86-video-ati/src/radeon_pci_device_match_gen.h
--- xf86-video-ati.orig/src/radeon_pci_device_match_gen.h	2008-06-19 14:36:59.000000000 -0400
+++ xf86-video-ati/src/radeon_pci_device_match_gen.h	2008-06-19 15:00:55.000000000 -0400
@@ -298,5 +298,6 @@
  ATI_DEVICE_MATCH( PCI_CHIP_RS780_9611, 0 ),
  ATI_DEVICE_MATCH( PCI_CHIP_RS780_9612, 0 ),
  ATI_DEVICE_MATCH( PCI_CHIP_RS780_9613, 0 ),
+ ATI_DEVICE_MATCH( PCI_CHIP_RV770_9442, 0 ),
  { 0, 0, 0 }
 };