Driver Category
Driver Brief Information
title:

ATI Technology Driver Catalyst

Vendor:ATI Technology
Category:Graphics and Video
License:Driver
OS: Windows XP
Version: 9.10
File Size: 40.63 Mb
Release: 22 Oct 2009
Update: 24 Oct 2009
Filename: 9-10_xp32_dd_ccc_wdm_enu.exe
Download Instruction
Brand:ATI Technology, Product:Graphics and Video, Model: Radeon HD 2400, Driver: 9.10, OS: Windows XP. ATI Radeon Driver Catalyst 9.10 Windows XP was collected from ATI Technology official site for ATI Technology Graphics and Video. In order to ensure the right driver download, Official driver links from ATI Technology are listed at first. If the official driver can not be downloaded, a copy of official driver can be provided at local server download.opendrivers.com, download1.opendrivers.com, or dl2.opendrivers.com. Besides, Both the driver developer's home page and driver download and support page be provided as well in my ATI Technology page.
Official Driver Download
Sponsored links
Files in Driver Package
   Date      Time    Attr         Size   Compressed  Name
------------------- ----- ------------ ------------  ------------------------
                    .....                      5866  $PLUGINSDIR/System.dll
2006-09-19 03:31:40 .....                     40648  $TEMP/Catalyst.bmp
2008-07-29 01:45:44 .....                       215  FAH/FAH.ico
2009-09-26 04:35:00 .....                     29783  Driver/AtiCim.bin
2009-09-26 04:35:00 .....                     32124  Driver/AtiCimUn.exe
2009-09-26 04:35:00 .....                     13322  Driver/CheckVer.exe
2009-09-26 04:35:00 .....                      8408  Driver/DrvUI64A.exe
2009-10-06 04:04:08 .....                       219  Driver/INSTALL.INI
2009-09-26 04:35:00 .....                      9511  Driver/Setup.exe
2009-09-26 04:35:00 .....                       168  Driver/Setup.ini
2009-09-26 04:35:00 .....                   1070716  Driver/data1.cab
2009-09-26 04:35:00 .....                      3961  Driver/data1.hdr
2009-09-26 04:35:00 .....                       112  Driver/data2.cab
2009-09-26 04:35:00 .....                    317186  Driver/ikernel.ex_
2009-09-26 04:35:00 .....                     31449  Driver/issetup.exe
2009-09-26 04:35:00 .....                       209  Driver/layout.bin
2009-09-26 04:35:00 .....                      6619  Driver/psapi.dll
2009-09-26 04:35:00 .....                     32664  Driver/setup.inx
2009-09-01 23:21:54 .....                      9785  $_OUTDIR/ATIPCE/1028.mst
2009-09-01 23:21:54 .....                     11096  $_OUTDIR/ATIPCE/1029.mst
2009-09-01 23:21:56 .....                     10368  $_OUTDIR/ATIPCE/1030.mst
2009-09-01 23:21:56 .....                     11314  $_OUTDIR/ATIPCE/1031.mst
2009-09-01 23:21:56 .....                     11586  $_OUTDIR/ATIPCE/1032.mst
2009-09-01 23:21:58 .....                       652  $_OUTDIR/ATIPCE/1033.mst
2009-09-01 23:21:56 .....                     10729  $_OUTDIR/ATIPCE/1034.mst
2009-09-01 23:21:56 .....                     10664  $_OUTDIR/ATIPCE/1035.mst
2009-09-01 23:21:56 .....                     10854  $_OUTDIR/ATIPCE/1036.mst
2009-09-01 23:21:56 .....                     10559  $_OUTDIR/ATIPCE/1040.mst
2009-09-01 23:21:56 .....                     10761  $_OUTDIR/ATIPCE/1041.mst
2009-09-01 23:21:56 .....                     10359  $_OUTDIR/ATIPCE/1042.mst
2009-09-01 23:21:56 .....                     10871  $_OUTDIR/ATIPCE/1043.mst
2009-09-01 23:21:56 .....                     10366  $_OUTDIR/ATIPCE/1044.mst
2009-09-01 23:21:56 .....                     11101  $_OUTDIR/ATIPCE/1045.mst
2009-09-01 23:21:56 .....                     10710  $_OUTDIR/ATIPCE/1046.mst
2009-09-01 23:21:56 .....                     10913  $_OUTDIR/ATIPCE/1049.mst
2009-09-01 23:21:58 .....                     10506  $_OUTDIR/ATIPCE/1053.mst
2009-09-01 23:21:58 .....                     10619  $_OUTDIR/ATIPCE/1054.mst
2009-09-01 23:21:58 .....                     10744  $_OUTDIR/ATIPCE/1055.mst
2009-09-01 23:21:54 .....                      9900  $_OUTDIR/ATIPCE/2052.mst
2009-09-01 23:21:56 .....                     10708  $_OUTDIR/ATIPCE/2070.mst
2009-09-02 00:30:34 .....                    158585  $_OUTDIR/ATIPCE/ATIPCE.msi
2009-09-26 05:29:52 .....                     15576  $_OUTDIR/BIN/AtiCIM.dll
2009-09-26 05:29:16 .....                     44790  $_OUTDIR/BIN/EnumDev.exe
2009-09-26 05:29:24 .....                     47713  $_OUTDIR/BIN/UpdatPnP.exe
2009-09-26 05:28:00 .....                      2374  $_OUTDIR/BIN/aticd64a.sys
2009-09-26 05:27:38 .....                    115535  $_OUTDIR/BIN/aticds10.dll
2009-09-02 03:55:54 .....                      7349  $_OUTDIR/BIN/atiicdxx.dat
2009-09-26 05:29:00 .....                    148597  $_OUTDIR/BIN/atiicdxx.dll
2009-09-26 05:28:30 .....                     87886  $_OUTDIR/BIN/atiicdxx.exe
2000-02-06 01:02:16 .....           11           11  $_OUTDIR/BIN/atiicdxx.ini
2009-09-02 04:45:40 .....                     11612  $_OUTDIR/BIN/atiicdxx.msi
2009-09-26 05:27:50 .....                      2239  $_OUTDIR/BIN/atiicdxx.sys
2003-04-15 08:07:14 .....                      3778  $_OUTDIR/BIN/atiicdxx.vxd
2009-09-26 05:27:06 .....                      5875  $_OUTDIR/BIN/atricd6a.dft
2009-09-26 05:27:06 .....                      5875  $_OUTDIR/BIN/atricd6a.enu
2009-09-26 05:27:18 .....                     20797  $_OUTDIR/BIN/atricdxx.dft
2009-09-26 05:27:18 .....                     20797  $_OUTDIR/BIN/atricdxx.enu
2008-05-27 01:54:36 .....                      5796  $_OUTDIR/BIN/chipset.msi
2009-10-06 04:11:46 .....                      1958  $_OUTDIR/CCC/CCC.dat
2009-09-26 05:29:58 .....                     30924  $_OUTDIR/CCC/CCC.dll
2009-09-26 05:29:58 .....                     30924  $_OUTDIR/WDM_ALL/WDM_ALL.dll
2006-10-26 22:03:20 .....                      2949  $_OUTDIR/CCC/UCI_ext.dll
2009-10-06 04:04:56 .....                   1229874  $_OUTDIR/CCC/data1.cab
2009-10-06 04:04:56 .....                      5450  $_OUTDIR/CCC/data1.hdr
2009-10-06 04:04:56 .....                       910  $_OUTDIR/CCC/data2.cab
2003-11-11 08:55:38 .....       459544       459544  $_OUTDIR/CCC/engine32.cab
2008-10-29 06:15:00 .....                       773  $_OUTDIR/CCC/install.ini
2009-10-06 04:04:56 .....                       176  $_OUTDIR/CCC/layout.bin
2003-11-11 08:55:38 .....                     51425  $_OUTDIR/CCC/setup.exe
2009-10-06 04:04:54 .....                    413358  $_OUTDIR/CCC/setup.ibt
2009-10-06 04:04:56 .....                       471  $_OUTDIR/CCC/setup.ini
2009-10-06 04:04:54 .....                    104637  $_OUTDIR/CCC/setup.inx
2006-12-01 02:12:16 .....                       300  $_OUTDIR/CCC/setup.iss
2009-10-02 04:47:40 .....                    222569  $_OUTDIR/CCC/Branding/Branding.msi
2009-08-29 04:13:44 .....                    210745  $_OUTDIR/CCC/Branding/Branding.msi.old
2009-10-06 04:06:42 .....                   2643623  $_OUTDIR/CCC/Core-Implementation/ccc-core-implementation.msi
2009-10-06 04:06:50 .....                    152724  $_OUTDIR/CCC/Core-PreInstall/ccc-core-preinstall.msi
2009-10-06 04:07:36 .....                      9849  $_OUTDIR/CCC/Core-Static/1028.mst
2009-10-06 04:07:36 .....                     11257  $_OUTDIR/CCC/Core-Static/1029.mst
2009-10-06 04:07:36 .....                     10460  $_OUTDIR/CCC/Core-Static/1030.mst
2009-10-06 04:07:36 .....                     11358  $_OUTDIR/CCC/Core-Static/1031.mst
2009-10-06 04:07:36 .....                     11665  $_OUTDIR/CCC/Core-Static/1032.mst
2009-10-06 04:07:38 .....                       664  $_OUTDIR/CCC/Core-Static/1033.mst
2009-10-06 04:07:38 .....                     10723  $_OUTDIR/CCC/Core-Static/1034.mst
2009-10-06 04:07:36 .....                     10716  $_OUTDIR/CCC/Core-Static/1035.mst
2009-10-06 04:07:36 .....                     10927  $_OUTDIR/CCC/Core-Static/1036.mst
2009-10-06 04:07:36 .....                     11750  $_OUTDIR/CCC/Core-Static/1038.mst
2009-10-06 04:07:36 .....                     10646  $_OUTDIR/CCC/Core-Static/1040.mst
2009-10-06 04:07:36 .....                     10889  $_OUTDIR/CCC/Core-Static/1041.mst
2009-10-06 04:07:36 .....                     10385  $_OUTDIR/CCC/Core-Static/1042.mst
2009-10-06 04:07:36 .....                     10849  $_OUTDIR/CCC/Core-Static/1043.mst
2009-10-06 04:07:36 .....                     10380  $_OUTDIR/CCC/Core-Static/1044.mst
2009-10-06 04:07:38 .....                     11139  $_OUTDIR/CCC/Core-Static/1045.mst
2009-10-06 04:07:38 .....                     10830  $_OUTDIR/CCC/Core-Static/1046.mst
2009-10-06 04:07:38 .....                     10958  $_OUTDIR/CCC/Core-Static/1049.mst
2009-10-06 04:07:38 .....                     10550  $_OUTDIR/CCC/Core-Static/1053.mst
2009-10-06 04:07:38 .....                     10759  $_OUTDIR/CCC/Core-Static/1054.mst
2009-10-06 04:07:38 .....                     10793  $_OUTDIR/CCC/Core-Static/1055.mst
2009-10-06 04:07:34 .....                      9972  $_OUTDIR/CCC/Core-Static/2052.mst
2009-10-06 04:07:38 .....                     10833  $_OUTDIR/CCC/Core-Static/2070.mst
2009-10-06 04:07:36 .....                     11059  $_OUTDIR/CCC/Core-Static/3084.mst
2009-10-06 04:07:40 .....                   1625467  $_OUTDIR/CCC/Core-Static/ccc-core-static.msi
2009-10-06 04:08:08 .....                   6750961  $_OUTDIR/CCC/Graphics-Full-Existing/ccc-graphics-full-existing.msi
2009-10-06 04:08:16 .....                    267866  $_OUTDIR/CCC/Graphics-Full-New/ccc-graphics-full-new.msi
2009-10-06 04:08:28 .....                    834155  $_OUTDIR/CCC/Graphics-Light/ccc-graphics-Light.msi
2009-10-06 04:06:06 .....                   1703037  $_OUTDIR/CCC/Graphics-Previews-Common/ccc-graphics-previews-common.msi
2009-10-06 04:08:42 .....                    534035  $_OUTDIR/CCC/Help/en-us/ccc-help-en-US.msi
2009-10-06 04:06:14 .....                    388328  $_OUTDIR/CCC/HydraVision-Full/ccc-hv-full.msi
2009-10-06 04:09:40 .....                    115292  $_OUTDIR/CCC/MOM-InstallProxy/ccc-mom-installproxy.msi
2009-10-06 04:09:46 .....                     49188  $_OUTDIR/CCC/Utility/ccc-utility.msi
2009-10-06 04:09:54 .....                     77015  $_OUTDIR/CCC/Utility64/ccc-utility64.msi
2007-11-02 03:46:36 .....                      2356  $_OUTDIR/CatalystRegistration/CatalystRegistration.dat
2007-06-14 02:46:50 .....                     30864  $_OUTDIR/CatalystRegistration/CatalystRegistration.dll
2007-10-05 23:16:36 .....                    611394  $_OUTDIR/CatalystRegistration/setup.exe
2009-10-06 04:04:08 .....                      1969  $_OUTDIR/Driver/CX_83739.INI
2009-09-24 06:04:50 .....                     30915  $_OUTDIR/Driver/Driver.DLL
2009-10-06 04:11:44 .....                      1990  $_OUTDIR/Driver/Driver.dat
2009-10-06 04:11:44 .....                       951  $_OUTDIR/Driver/INSTALL.INI
2009-09-26 04:35:00 .....                       172  $_OUTDIR/Driver/SETUP.INI
2009-09-26 04:35:00 .....                     33625  $_OUTDIR/Driver/Setup.exe
2009-09-26 04:35:00 .....                     48715  $_OUTDIR/Driver/_setup.bmp
2009-09-26 04:35:00 .....                   2368271  $_OUTDIR/Driver/data1.cab
2009-09-26 04:35:00 .....                      4623  $_OUTDIR/Driver/data1.hdr
2009-09-26 04:35:00 .....                       113  $_OUTDIR/Driver/data2.cab
2009-09-26 04:35:00 .....                       164  $_OUTDIR/Driver/layout.bin
2009-09-26 04:35:00 .....                     33958  $_OUTDIR/Driver/setup.inx
2009-09-26 04:35:00 .....                       328  $_OUTDIR/Driver/setup.iss
2009-10-13 04:54:24 .....                      7806  $_OUTDIR/Driver/XP_INF/CX_83739.cat
2009-10-06 04:12:12 .....                     11241  $_OUTDIR/Driver/XP_INF/CX_83739.inf
2009-10-06 04:11:44 .....                        76  $_OUTDIR/Driver/XP_INF/atiiseag.ini
2009-09-24 05:23:08 .....                    282738  $_OUTDIR/Driver/XP_INF/B_89222/ati2cqag.dl_
2009-09-24 06:38:26 .....                    174379  $_OUTDIR/Driver/XP_INF/B_89222/ati2dvag.dl_
2009-09-24 06:20:50 .....                     27024  $_OUTDIR/Driver/XP_INF/B_89222/ati2edxx.dl_
2009-09-24 05:28:58 .....                     13232  $_OUTDIR/Driver/XP_INF/B_89222/ati2erec.dl_
2009-09-24 06:20:36 .....                     74193  $_OUTDIR/Driver/XP_INF/B_89222/ati2evxx.dl_
2009-09-24 06:19:14 .....                    301828  $_OUTDIR/Driver/XP_INF/B_89222/ati2evxx.ex_
2009-09-24 06:21:00 .....                     15484  $_OUTDIR/Driver/XP_INF/B_89222/ati2mdxx.ex_
2009-09-24 06:59:26 .....                   2758959  $_OUTDIR/Driver/XP_INF/B_89222/ati2mtag.sy_
2009-09-24 06:09:18 .....                   1693601  $_OUTDIR/Driver/XP_INF/B_89222/ati3duag.dl_
2009-09-24 05:30:08 .....                     85471  $_OUTDIR/Driver/XP_INF/B_89222/atiadlxx.dl_
2009-05-12 05:35:28 .....                     66072  $_OUTDIR/Driver/XP_INF/B_89222/atibtmon.ex_
2009-09-24 05:31:18 .....                     20052  $_OUTDIR/Driver/XP_INF/B_89222/aticalcl.dl_
2009-09-24 05:29:36 .....                   1544177  $_OUTDIR/Driver/XP_INF/B_89222/aticaldd.dl_
2009-09-24 05:31:32 .....                     20501  $_OUTDIR/Driver/XP_INF/B_89222/aticalrt.dl_
2009-09-24 06:17:44 .....                     26623  $_OUTDIR/Driver/XP_INF/B_89222/atiddc.dl_
2009-09-24 06:39:28 .....                     98428  $_OUTDIR/Driver/XP_INF/B_89222/atidemgx.dll
2009-06-05 05:37:46 .....                      1012  $_OUTDIR/Driver/XP_INF/B_89222/atifglpf.xml
2009-09-24 06:11:02 .....                    114595  $_OUTDIR/Driver/XP_INF/B_89222/atiiiexx.dll
2009-09-24 05:32:20 .....                    267047  $_OUTDIR/Driver/XP_INF/B_89222/atikvmag.dl_
2009-09-24 05:36:50 .....                     39135  $_OUTDIR/Driver/XP_INF/B_89222/atimpc32.dl_
2009-02-04 04:52:02 .....                     23549  $_OUTDIR/Driver/XP_INF/B_89222/atiodcli.ex_
2009-02-19 01:55:20 .....                     70017  $_OUTDIR/Driver/XP_INF/B_89222/atiode.ex_
2009-08-07 15:31:36 .....                      2654  $_OUTDIR/Driver/XP_INF/B_89222/atiogl.xml
2009-09-24 05:58:16 .....                   5087726  $_OUTDIR/Driver/XP_INF/B_89222/atioglxx.dl_
2009-09-24 05:27:50 .....                    169547  $_OUTDIR/Driver/XP_INF/B_89222/atiok3x2.dl_
2009-09-24 06:21:32 .....                    102140  $_OUTDIR/Driver/XP_INF/B_89222/atipdlxx.dl_
2009-09-24 05:29:42 .....                      8043  $_OUTDIR/Driver/XP_INF/B_89222/atitvo32.dl_
2001-11-09 23:01:04 .....                     11954  $_OUTDIR/Driver/XP_INF/B_89222/ativcoxx.dl_
2009-09-24 05:53:26 .....            3            3  $_OUTDIR/Driver/XP_INF/B_89222/ativva5x.dat
2009-09-24 05:53:26 .....                    139149  $_OUTDIR/Driver/XP_INF/B_89222/ativva6x.dat
2009-09-24 05:53:28 .....                    342236  $_OUTDIR/Driver/XP_INF/B_89222/ativvaxx.ca_
2009-09-24 05:53:48 .....                    918321  $_OUTDIR/Driver/XP_INF/B_89222/ativvaxx.dl_
2009-09-24 06:21:14 .....                     75865  $_OUTDIR/Driver/XP_INF/B_89222/oemdspif.dl_
2005-02-19 04:23:46 .....                       222  $_OUTDIR/WDM_ALL/Setup.ini
2005-02-19 03:27:22 .....                      1668  $_OUTDIR/WDM_ALL/WDM_ALL.dat
2005-02-19 04:23:44 .....                   3317512  $_OUTDIR/WDM_ALL/data1.cab
2005-02-19 04:23:44 .....                      8497  $_OUTDIR/WDM_ALL/data1.hdr
2005-02-19 04:23:44 .....                       113  $_OUTDIR/WDM_ALL/data2.cab
2005-02-19 04:23:44 .....                       257  $_OUTDIR/WDM_ALL/install.ini
2005-02-19 04:23:44 .....                       170  $_OUTDIR/WDM_ALL/layout.bin
2005-02-19 04:23:46 .....                     34503  $_OUTDIR/WDM_ALL/setup.inx
2009-04-01 13:48:26 .....                       546  $_OUTDIR/WDM_ALL/AVS_T200/AVS_T200.ini
2009-04-01 09:23:18 .....                     70166  $_OUTDIR/WDM_ALL/AVS_T200/XP/atinavt2.SYS
2009-04-01 09:23:56 .....                     38388  $_OUTDIR/WDM_ALL/AVS_T200/XP/atinppt2.ax
2009-04-29 16:33:54 .....                      4573  $_OUTDIR/WDM_ALL/AVS_T200/XP/atirt2xp.cat
2009-04-01 13:48:24 .....                      4000  $_OUTDIR/WDM_ALL/AVS_T200/XP/atirt2xp.inf
2005-12-03 05:49:50 .....                     19315  $_OUTDIR/WDM_ALL/AVS_T200/XP/ativmc01.cod
2009-09-02 12:46:52 .....                       668  $_OUTDIR/WDM_ALL/RIO/RIO.ini
2008-09-16 10:56:02 .....                     17583  $_OUTDIR/WDM_ALL/RIO/XP/CTRLT506.s3
2009-06-15 16:43:14 .....                     19912  $_OUTDIR/WDM_ALL/RIO/XP/CTRLT507.s3
2008-09-13 04:13:38 .....                    217825  $_OUTDIR/WDM_ALL/RIO/XP/CTRLT511.s3
2006-09-12 01:47:40 .....                      5779  $_OUTDIR/WDM_ALL/RIO/XP/NcRemotePci.SYS
2009-09-02 09:20:08 .....                      8977  $_OUTDIR/WDM_ALL/RIO/XP/aticir.SYS
2009-09-02 09:18:32 .....                    330141  $_OUTDIR/WDM_ALL/RIO/XP/atinavrr.SYS
2009-09-02 09:19:20 .....                     39165  $_OUTDIR/WDM_ALL/RIO/XP/atinpprr.ax
2009-10-05 22:24:38 .....                      4948  $_OUTDIR/WDM_ALL/RIO/XP/atirioxp.cat
2009-09-02 12:46:52 .....                      4975  $_OUTDIR/WDM_ALL/RIO/XP/atirioxp.inf
2009-10-05 22:24:38 .....                      4521  $_OUTDIR/WDM_ALL/RIO/XP/atmcirxp.cat
2009-09-02 12:46:52 .....                      2510  $_OUTDIR/WDM_ALL/RIO/XP/atmcirxp.inf
------------------- ----- ------------ ------------  ------------------------
                                459558     42613839  189 files, 0 folders
Backup Download Server
Driver Summary
ATI Radeon HD 2400/HD 2600/HD 2900/HD 3400/HD 3600/HD 3800/HD 4350/HD 4550/HD 4600/HD 4650/HD 4670/HD 4770/HD 4800/HD 4850 X2/HD 4870 X2/HD 4890/HD 5700/HD 5800 Series Driver Catalyst 9.10 Windows XP. Display Driver, ATI WDM Integrated Driver, Catalyst Control Center (English Language Only).

The Catalyst Software Suite 9.10 contains the following:

  • Radeon display driver 8.661
  • HydraVision for both Windows XP, Vista and Windows 7
  • WDM Driver Install Bundle
  • Southbridge/IXP Driver
  • Catalyst Control Center Version 8.661

    This section provides information on new features found in this release of the Radeon Display Driver. These include the following:

  • GPU acceleration for the Windows 7 Drag and Drop video converting application
  • Super Sample Anti-Aliasing for the ATI Radeon HD 5800 Series

    This section provides information on resolved issues in this release of the ATI Catalyst Software Suite for Windows. These include:

  • The video preview in Avivo? Video - Basic Quality page in Catalyst Control Center no longer flickers while playing SD/HD Blu-ray titles
  • Underscan/Overscan settings for TV can now be applied from the Catalyst Control Center - TV Properties Adjustments page
  • The display mode page will now refresh properly when selecting another display from drop down menu in Catalyst Control Center with two displays connected in extended mode
  • "Component Video Properties" is no longer incorrectly listed under the "Quick Settings" tab under Catalyst Control Center - Basic view in extended mode
  • Changes to the Avivo Video Presets page in Catalyst Control Center can now be applied and will not revert back to the default settings
  • The "Use Application Settings" checkbox in Avivo Video Presets page can now be unchecked in Catalyst Control Center
  • Changes to the “All Settings” and “Basic Quality” pages in Catalyst Control Center - Avivo Video will now be retained after reboot
  • Switching profile settings in Avivo Video - Basic Quality page now functions properly in Catalyst Control Center

    This section provides information on resolved issues in this release of the ATI Catalyst Software Suite for Windows XP. These include:

  • Catalyst Control Center: The DTV (HDMI) Pixel Format settings will now be restored when a HDMI display is hotplugged back after a DVI display is hotplugged and unplugged during the interval to the same port
  • System no longer reboots or displays a black screen while executing ATI Stream applications with a particular combination of ASICs set as primary and secondary
  • "Force maximum performance clocks" option is now available for the second ASIC in the Catalyst Control Center system tray when two R700 ASICs are connected
  • Corruption no longer observed during Blu-ray DVD H.264/VC-1 content playback
  • Different Presets/Basic Color options can now be selected under Avivo Video in Catalyst Control Center Advanced View

  • Driver Support Models
    The driver can be applied to the following product models:
    The Related Drivers