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[[!toc ]]
## Feature Matrix for Free Radeon Drivers
**This page is only for free Radeon drivers using KMS.
[[radeon|radeon]] (xf86-video-ati) for 2D; radeon, r200 Mesa and r300, r600, radeonsi Gallium drivers only.
THIS PAGE IS NOT FOR [[FGLRX/CATALYST|ATIProprietaryDriver]] DRIVERS PROVIDED BY AMD/ATI.**
**See [[RadeonFeatureUMS|RadeonFeatureUMS]] for radeon in UMS.**
**See [[radeonhd:feature|radeonhd:feature]] for radeonhd.**
Also check out the [[RadeonProgram|RadeonProgram]], [[GalliumStatus|GalliumStatus]], and [[ATIRadeon|http://dri.freedesktop.org/wiki/ATIRadeon]] at DRI wiki.
* "**DONE**" means that it is implemented and relatively bug-free.
* "**MOSTLY**" means that it is implemented but has some known bugs.
* "**WIP**" means that someone has started on the initial implementation.
* "**BIOS**" means only if supported by your BIOS. No software support. Yet.
* "**N/A**" means that the feature is not supported by the hardware.
* "**N/N**" means that the feature will not be implemented, because a better alternative is or will be available.
* "**TODO**" means that someone needs to write the code. The required knowledge to write the code may or may not be known. Please ask on #radeon if you want to get your feet wet on this.
* "**UNKNOWN**" means that the current status of this item isn't known. You are free to update it if you know. [[!table header="no" class="mointable" data="""
**2D features** || | **R100** | **R200** | **R300/R400** | **R500** | **R600/700** | **Evergreen** | **N.Islands** | **S.Islands**[^1]
Kernel Modesetting || | DONE | DONE | DONE | DONE | DONE | DONE | DONE | DONE
Max Supported Displays (Eyefinity)[^2] || | 1-2 | 2 | 2 | 2 | 2 | 2-6 | 4-6 | 6
DRI2 || | DONE | DONE | DONE | DONE | DONE | DONE | DONE | DONE
Page Flipping || | DONE | DONE | DONE | DONE | DONE | DONE | DONE | DONE
ShadowFB || | DONE | DONE | DONE | DONE | DONE | DONE | DONE | DONE
2D Acceleration (EXA) || | DONE | DONE | DONE | DONE | DONE | DONE | DONE | Gallium
2D Acceleration (glamor)[^3] || | N/A | N/A | DONE | DONE | DONE | DONE | DONE | DONE
Textured Xv || | DONE | DONE | DONE | DONE | DONE | DONE | DONE | Gallium
Video Decode (XvMC/VDPAU/VA-API)
on the 3D engine || | TODO | TODO | WIP | WIP | WIP | WIP | WIP | WIP
Video Decode (XvMC/VDPAU/VA-API)
on UVD || | N/A | N/A | N/A | N/A | DONE[^4] | DONE | DONE | DONE
Hybrid Graphics/PowerXpress/Enduro[^5] || | N/A | N/A | N/A | N/A | MOSTLY | MOSTLY | MOSTLY | MOSTLY
**Mesa 3D features** || | **R100** | **R200** | **R300/R400** | **R500** | **R600/700** | **Evergreen** | **N.Islands** | **S.Islands**[^6]
3D Driver || | radeon | r200 | r300g | r300g | r600g | r600g | r600g | radeonsi
Primitives || | DONE | DONE | DONE | DONE | DONE | DONE | DONE | DONE
Stippled Primitives || | DONE | DONE | TODO | TODO | TODO | TODO | TODO | TODO
Smooth Primitives || | DONE | DONE | TODO | TODO | TODO | TODO | TODO | TODO
Textures || | DONE | DONE | DONE | DONE | DONE | DONE | DONE | DONE
Hardware TCL || | DONE | DONE | DONE | DONE | DONE | DONE | DONE | DONE
Vertex Shaders || | N/A | DONE | DONE | DONE | DONE | DONE | DONE | DONE
Fragment (Pixel) Shaders || | N/A | DONE | DONE | DONE | DONE | DONE | DONE | DONE
GLSL || | N/A | N/A | DONE | DONE | DONE | DONE | DONE | DONE
Color Buffer Tiling || | DONE | DONE | DONE | DONE | DONE | DONE | DONE | DONE[^7]
Texture Tiling || | TODO | TODO | DONE | DONE | DONE | DONE | DONE | DONE[^8]
S3TC decompression
<small>(via env variable / drirc)</small> || | DONE | DONE | DONE | DONE | DONE | DONE | DONE | DONE[^9]
full S3TC
<small>(via libtxc_dxtn.so)</small> || | DONE | DONE | DONE | DONE | DONE | DONE | DONE | DONE[^10]
Tessellation Shader Stages || | N/A | N/A | N/A | N/A | N/A | TODO | TODO | TODO
Geometry Shaders || | N/A | N/A | N/A | N/A | TODO | TODO | TODO | TODO
Anti-Aliasing (MSAA) || | N/A | N/A | MOSTLY[^11] | DONE | DONE[^12] | DONE[^13] | DONE[^14] | TODO
Anti-Aliasing (MLAA) || | N/A | N/A | N/A | [[MOSTLY|http://candgsoc.host56.com/]] | [[DONE|http://candgsoc.host56.com/]] | [[DONE|http://candgsoc.host56.com/]] | [[not tested|http://candgsoc.host56.com/]] | [[not tested|http://candgsoc.host56.com/]]
Anisotropic Filtering || | DONE | DONE | DONE | DONE | DONE | DONE | DONE | DONE
Hyper-Z || | WIP | TODO | MOSTLY[^15] | DONE | DONE | DONE | DONE | TODO
OpenGL Compliance (Driver/Hardware) || | 1.3/1.3 | 1.3/1.4 | 2.1/2.1[^16] | 2.1/2.1[^17] | 3.1/3.3[^18] | 3.1/4.2[^19] | 3.1/4.2[^20] | 2.1/4.2
**Output** || | **R100** | **R200** | **R300/R400** | **R500** | **R600/700** | **Evergreen** | **N.Islands** | **S.Islands**[^21]
Dual-link DVI || | N/A | DONE | DONE | DONE | DONE | DONE | DONE | DONE
XRandR 1.2 || | DONE | DONE | DONE | DONE | DONE | DONE | DONE | DONE
TV Out || | DONE | DONE | DONE | DONE | DONE | DONE | N/A | N/A
[[DisplayPort|DisplayPort]] || | N/A | N/A | N/A | N/A | DONE | DONE | DONE | DONE
HDMI Audio[^22] || | N/A | N/A | N/A | N/A | DONE | DONE[^23] | DONE[^24] | TODO
**Power Saving** || | **R100** | **R200** | **R300/R400** | **R500** | **R600/700** | **Evergreen** | **N.Islands** | **S.Islands**[^25]
Engine reclocking || | DONE | DONE | DONE | DONE | DONE | DONE | DONE | DONE
Memory reclocking || | TODO | TODO | TODO | DONE | DONE | DONE | DONE | DONE
Voltage adjusting || | DONE | DONE | DONE | DONE | DONE | DONE | DONE | DONE
Thermal sensors || | N/A | N/A | DONE[^26] | DONE[^27] | DONE[^28] | DONE[^29] | DONE[^30] | DONE[^31]
**Other** || | **R100** | **R200** | **R300/R400** | **R500** | **R600/700** | **Evergreen** | **N.Islands** | **S.Islands**[^32]
Suspend Support || | DONE | DONE | DONE | DONE | DONE | DONE | DONE | DONE
[[CrossFire|CrossFire]] (multi-card) || | N/A | N/A | N/A | TODO | TODO | TODO | TODO | TODO
Compute (OpenCL)[^33] || | N/A | N/A | N/A | N/A | TODO | WIP | WIP | WIP
Asynchronous DMA || | N/A | N/A | N/A | N/A | DONE | DONE | DONE | DONE
"""]]
[^34]
## VSYNC
There are several mechanisms involved in tear-free rendering due to limitations in X.
### 3D driver environment variable
* vblank_mode - selects whether or not the 3D application should synchronize to vblank.
### DDX driver options
* [[EnablePageFlip|EnablePageFlip]] - This option enables the use of pageflipping (switching the display controller's base address pointer) rather than blits for GL buffer swaps. It only applies to fullscreen GL apps. Pageflipping is always synced to vblank at the moment.
* [[SwapBuffersWait|SwapBuffersWait]] - This option prevents tearing for GL buffer swaps by waiting to update the front buffer until scanout has passed the area of the screen the GL buffer swap is going to blit to.
* EXAVSync - This option prevents tearing for EXA operations by waiting to update the front buffer until scanout has passed the area of the screen the EXA operation is going to render to.
### Xv Attribute
* XV_VSYNC - This option prevents tearing when playing back videos using Xv by waiting to update the video image until scanout has passed the area of the screen displaying the video. It only prevents tearing if Xv is rendering directly to the front buffer. If you are using a compositer, this does not prevent tearing because Xv is rendering to an offscreen buffer and the compositor copied it to the front buffer.
## KMS Power Management Options
Kernel 2.6.35 or newer is required. The pm code supports two basic methods:
1. "dynpm"
1. "profile"
You can select the methods via sysfs. Echo "dynpm" or "profile" to /sys/class/drm/card0/device/power_method.
Controlling the fan speed directly is not possible (and would be very dangerous), but it can be lowered by setting lower power profile.
The "dynpm" method dynamically changes the clocks based on the number of pending fences, so performance is ramped up when running GPU intensive apps, and ramped down when the GPU is idle. The reclocking is attemped during vertical blanking periods, but due to the timing of the reclocking functions, doesn't not always complete in the blanking period, which can lead to flicker in the display. Due to this, dynpm only works when a single head is active.
The "profile" method exposes five profiles that can be selected from:
1. "default"
1. "auto"
1. "low"
1. "mid"
1. "high"
Select the profile by echoing the selected profile to /sys/class/drm/card0/device/power_profile.
* "default" uses the default clocks and does not change the power state. This is the default behavior.
* "auto" selects between "mid" and "high" power states based on the whether the system is on battery power or not. The "low" power state are selected when the monitors are in the dpms off state.
* "low" forces the gpu to be in the low power state all the time. Note that "low" can cause display problems on some laptops; this is why auto does not use "low" when displays are active.
* "mid" forces the gpu to be in the "mid" power state all the time. The "low" power state is selected when the monitors are in the dpms off state.
* "high" forces the gpu to be in the "high" power state all the time. The "low" power state is selected when the monitors are in the dpms off state.
The "profile" method is not as agressive as "dynpm," but is currently much more stable and flicker free and works with multiple heads active.
Power management is supported on all asics (r1xx-evergreen) that include the appropriate power state tables in the vbios; not all boards do (especially older desktop cards).
Thermal sensors are implemented via external i2c chips or via the internal thermal sensor (rv6xx-evergreen only; supported in 2.6.36 or newer); not all OEMs implement a thermal sensor. To get the temperature on asics that use i2c chips, you need to load the appropriate hwmon driver for the sensor used on your board (lm63, lm64, etc.). The drm will attempt to load the appropriate hwmon driver. On boards that use the internal thermal sensor, the drm will set up the hwmon interface automatically. When the appropriate driver is loaded, the temperatures can be accessed via lm_sensors tools or via sysfs in /sys/class/hwmon.
## Linux kernel parameters
Try _modinfo -p radeon_ to find up-to-date parameters. To check default values look at _drivers/gpu/drm/radeon/radeon_drv.c_ in Linux kernel source. To check current values look at _/sys/class/drm/card*/device/driver/module/holders/radeon/parameters/*_
[[!table header="no" class="mointable" data="""
Option | Values | Default value<sup>1</sup> | Explanation
radeon.agpmode | 1, 2, 4, 8, -1 | 0 | AGP mode, -1 for PCI/PCIe mode
radeon.audio | 0, 1 | 0 | Disable/enable HDMI audio
radeon.benchmark | | 0 | Run benchmark
radeon.connector_table | | 0 | Force connector table
radeon.disp_priority | 0, 1, 2 | 0 | Display Priority (0 = auto, 1 = normal, 2 = high)
radeon.dynclks | 0, 1, -1 | -1 | Disable/Enable dynamic clocks, -1 for auto
radeon.gartsize | 32, 64, etc. | 512 | Size of PCIe/IGP gart to setup in megabytes
radeon.hw_i2c | 0, 1 | 0 | Disable/enable hw i2c engine
radeon.modeset | 0, 1, -1 | -1 | Disable/enable modesetting, -1 for auto
radeon.msi | 0, 1, -1 | -1 | Disable/enable MSI support, -1 for auto
radeon.no_wb | 0, 1 | | Disable/enable AGP writeback for scratch registers
radeon.pcie_gen2 | 0, 1 | -1 | Disable/enable PCIe 2.0 support, -1 for auto
radeon.r4xx_atom | 0, 1 | 0 | Disable/enable ATOMBIOS modesetting for R4xx
radeon.test | | 0 | Run tests
radeon.tv | 0, 1 | 1 | Disable/enable TV
radeon.vramlimit | 32, 64, etc. | 0 | Restrict VRAM for testing
"""]]
<sup>1</sup> For Linux kernel 3.6
## Decoder ring for engineering vs marketing names
[[!table header="no" class="mointable" data="""
Family | Engineering Names | Marketing Names
R100 | R100, RV100, RV200, RS100, RS200 | 7xxx, 320-345
R200 | R200, RV250, RV280, RS300 | 8xxx - 9250
R300 | R300, R350, RV350, RV380, RS400, RS480 | 9500 - 9800, X300 - X600, X1050 - X1150, 200M
R400 | R420, R423, RV410, RS600, RS690, RS740 | X700 - X850, X12xx, 2100
R500 | RV515, R520, RV530, RV560, RV570, R580 | X1300 - X2300, HD2300
R600 | R600, RV610, RV630, RV620, RV635, RV670, RS780, RS880 | HD2400 - HD4290
R700 | RV770, RV730, RV710, RV740 | HD4330 - HD5165, HD5xxV
Evergreen | CEDAR, REDWOOD, JUNIPER, CYPRESS, PALM (Wrestler), SUMO, SUMO2 | HD5430 - HD5970, all HD6000 not listed under _Northern Islands_, HD7350
Northern Islands | ARUBA, BARTS, TURKS, CAICOS, CAYMAN | HD6450, HD6570, HD6670, HD6790 - HD6990, HD64xxM, HD67xxM, HD69xxM, HD7450 - HD7670
Southern Islands | CAPE VERDE, PITCAIRN, TAHITI, OLAND, HAINAN | HD7750 - HD7970
Sea Islands | BONAIRE, KABINI, KAVERI | HD7790
"""]]
## Radeon 3D Hardware
[[!table header="no" class="mointable" data="""
3D Core | Engineering Names | Shader Model | DX | OpenGL | Max Texture Size | Max Renderbuffer Size
R1xx | R100, RV100, RV200, RS100, RS200 | NA | 7 | 1.3 | 2048 | 2048
R2xx | R200, RV250, RV280, RS300 | 1 | 8 | 1.4 | 2048 | 2048
R3xx | R300, R350, RV350, RV380, RS400, RS480 | 2 | 9 | 2.1 | 2048 | 2560
R4xx | R420, R423, RV410, RS600, RS690, RS740 | 2 | 9 | 2.1 | 2048 | 4021
R5xx | RV515, R520, RV530, RV560, RV570, R580 | 3 | 9 | 2.1 | 4096 | 4096
R6xx | R600, RV610, RV630, RV620, RV635, RV670, RS780, RS880 | 4 | 10 | 3.3 | 8192 | 8192
R7xx | RV770, RV730, RV710, RV740 | 4 | 10 | 3.3 | 8192 | 8192
R8xx | CEDAR, REDWOOD, JUNIPER, CYPRESS, PALM (Wrestler), SUMO, SUMO2, BARTS, TURKS, CAICOS | 5 | 11 | 4.2 | 16384 | 16384
R9xx | CAYMAN, ARUBA | 5 | 11 | 4.2 | 16384 | 16384
RAxx | CAPE VERDE, PITCAIRN, TAHITI, OLAND, HAINAN | 5 | 11 | 4.2 | 16384 | 16384
RBxx | BONAIRE, KABINI, KAVERI | 5 | 11 | 4.2 | 16384 | 16384
"""]]
## Radeon Display Hardware
[[!table header="no" class="mointable" data="""
Display Core | Engineering Names | Display Controllers | DACs | TV Encoder | DVO | Digital | Notes
Classic Radeon | Rage128, R1xx-R4xx | 1-2 | 1-2 | 0-1 | 1 | 2 (1 TMDS, 1 LVDS) |
DCE1/Avivo | R5xx | 2 | 2 | 1 | 1 | 2 (1 TMDS, 1 LVDS/TMDS) |
DCE2 | R600, RV610, RV630, RV670, RS600, RS690, RS740 | 2 | 2 (R600, RV610, RV630, RV670), 1 (RS600, RS690, RS740) | 1 | 1 | 2 (1 TMDS, 1 LVDS/TMDS) | Adds HDMI 1.2 Support
DCE3 | RV620, RV635, RS780, RS880 | 2 | 2 (RV620, RV635), 1 (RS780, RS880) | 1 | 1 | 3 (LVDS/TMDS/DP) | Adds support for [[DisplayPort|DisplayPort]], HDMI 1.3 Support
DCE3.1 | RV770 | 2 | 2 | 1 | 1 | 3 (LVDS/TMDS/DP) |
DCE3.2 | RV710, RV730, RV740 | 2 | 2 | 1 | 1 | 5 (LVDS/TMDS/DP) | Adds support for up to 5 digital outputs
DCE4 | CEDAR, REDWOOD, JUNIPER, CYPRESS | 4-6 | 2 | 1 | 1 | 6 (LVDS/TMDS/DP) | Adds support for up to 6 independant displays (max of 2 non-[[DisplayPort|DisplayPort]] displays)
DCE4.1 | PALM (Wrestler), SUMO, SUMO2 | 2 | 1 (PALM), 0 (SUMO, SUMO2) | 1 | 1 | 6 (LVDS/TMDS/DP) | VGA and LVDS are implemented via DP bridge chips
DCE5 | BARTS, TURKS, CAICOS, CAYMAN | 4-6 | 1 | 0 | 1 | 6 (LVDS/TMDS/DP) | Adds improved gamma correction, HDMI 1.4 support, [[DisplayPort|DisplayPort]] 1.2 support
DCE6 | CAPE VERDE, PITCAIRN, TAHITI | 6 | 1 | 0 | 1 | 6 (LVDS/TMDS/DP) | HDMI 4K modes
DCE6.1 | ARUBA | 4 | 0 | 0 | 1 | 6 (TMDS/DP) | VGA and LVDS are implemented via DP bridge chips
DCE6.4 | OLAND | 2 | 1 | 0 | 1 | 2 (TMDS/DP) |
DCE8.1 | KAVERI | 4 | 0 | 0 | 0 | 7 (TMDS/DP) | VGA and LVDS are implemented via DP bridge chips
DCE8.2 | BONAIRE | 6 | 1 | 0 | 1 | 6 (LVDS/TMDS/DP) |
DCE8.3 | KABINI | 2 | 1 | 0 | 0 | 2 (LVDS/TMDS/DP) |
"""]]
## Where to get the drivers
* Xorg radeon DDX ([[xf86-video-ati|http://cgit.freedesktop.org/xorg/driver/xf86-video-ati/]])
* Mesa 3D driver ([[radeon, r200, r300c/g, r600c/g|http://cgit.freedesktop.org/mesa/mesa/]])
* KMS DRM ([[Linux Kernel|http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=summary]])
* libdrm ([[libdrm_radeon|http://cgit.freedesktop.org/mesa/drm/]])
## Where to file defect reports
[[http://bugs.freedesktop.org|http://bugs.freedesktop.org]] using the following values for Product : Component...
* Xorg radeon DDX - xorg : Driver/Radeon
* Mesa 3D driver (1xx) - Mesa : Drivers/DRI/Radeon
* Mesa 3D driver (2xx) - Mesa : Drivers/DRI/r200
* Mesa 3D driver (3xx-5xx) - Mesa : Drivers/Gallium/r300
* Mesa 3D driver (6xx-NI) - Mesa : Drivers/Gallium/r600
* Mesa 3D driver (SI) - Mesa : Drivers/Gallium/radeonsi
* KMS DRM aka Kernel graphics driver - DRI : DRM/Radeon
## Documentation
* [[A presentation about R600 for very beginners|R600_pres_carli2.pdf]]
* [[AMD R3xx 3D Register Reference|http://www.x.org/docs/AMD/R3xx_3D_Registers.pdf]]
* [[AMD R5xx Acceleration|http://www.x.org/docs/AMD/R5xx_Acceleration_v1.5.pdf]]
* [[AMD R6xx/R7xx 3D Register Reference|http://www.x.org/docs/AMD/R6xx_3D_Registers.pdf]]
* [[AMD R6xx+ Acceleration|http://www.x.org/docs/AMD/R6xx_R7xx_3D.pdf]]
* [[AMD rv630|http://www.x.org/docs/AMD/42589_rv630_rrg_1.01o.pdf]]
* [[AMD rs690|http://www.x.org/docs/AMD/43372_rs690_rrg_3.00o.pdf]]
* [[AMD M56|http://www.x.org/docs/AMD/RRG-216M56-03oOEM.pdf]]
* [[AMD m76|http://www.x.org/docs/AMD/42590_m76_rrg_1.01o.pdf]]
* [[AMD R6xx shader ISA|http://developer.amd.com/wordpress/media/2012/10/R600_Instruction_Set_Architecture.pdf]]
* [[AMD R7xx shader ISA|http://developer.amd.com/wordpress/media/2012/10/R700-Family_Instruction_Set_Architecture.pdf]]
* [[AMD Evergreen shader ISA|http://developer.amd.com/wordpress/media/2012/10/AMD_Evergreen-Family_Instruction_Set_Architecture.pdf]]
* [[AMD Cayman/Trinity shader ISA|http://developer.amd.com/wordpress/media/2012/10/AMD_HD_6900_Series_Instruction_Set_Architecture.pdf]]
* [[AMD OpenCL and Compute Resources|http://developer.amd.com/tools/heterogeneous-computing/amd-accelerated-parallel-processing-app-sdk/documentation/]]
* [[AMD Developer Guides (RS780/RS880, SB7xx, etc.)|http://developer.amd.com/resources/documentation-articles/developer-guides-manuals/]]
* [[AMD Southern Islands Series ISA|http://developer.amd.com/wordpress/media/2012/12/AMD_Southern_Islands_Instruction_Set_Architecture.pdf]]
## Links
* [[Wikipedia AMD GPUs|http://en.wikipedia.org/wiki/Ati_gpu]]
[^1] Kernel 3.4 required
[^2] Depends on the OEM board. Max of 2 non-Displayport displays.
[^3] Requires a 3D driver with shader support
[^4] DONE for R7xx, TODO for R6xx
[^5] There are two versions of hybrd graphics: MUXed and MUX-less. MUXed have a display MUX to switch the displays between the discrete and integrated cards. MUXed systems can be switched using vgaswitcheroo. MUX-less do not have a display MUX and the displays are only connected to the integrated card. On MUX-less systems, the discrete card is solely for rendering, not display. X Server 1.14 is required to support rendering and display from different cards. Most new laptops (2011+) are MUX-less.
[^6] Kernel 3.4 required
[^7] Kernel 3.10 required
[^8] Kernel 3.10 required
[^9] Kernel 3.10 required
[^10] Kernel 3.10 required
[^11] Needs piglit testing before enabling by default, see mesa commit 8ed6b1400
[^12] Kernel 3.6 required
[^13] Kernel 3.6 required
[^14] Kernel 3.6 required
[^15] Needs piglit and Lightsmark testing before enabling by default, see mesa commit 12dcbd595
[^16] Hardware doesn't support ARB NPOT textures fully.
[^17] Hardware doesn't support ARB NPOT textures fully.
[^18] Kernel 3.6 and xserver 1.13 required
[^19] Kernel 3.6 and xserver 1.13 required
[^20] Kernel 3.6 and xserver 1.13 required
[^21] Kernel 3.4 required
[^22] Requires loading radeon with the audio parameter set to 1 (e.g., add radeon.audio=1 on the kernel command line in grub).
[^23] Kernel 3.3 required
[^24] Kernel 3.5 required
[^25] Kernel 3.4 required
[^26] i2c chip
[^27] i2c chip
[^28] i2c chip or internal sensor
[^29] i2c chip or internal sensor
[^30] i2c chip or internal sensor
[^31] i2c chip or internal sensor
[^32] Kernel 3.4 required
[^33] See http://dri.freedesktop.org/wiki/GalliumCompute
[^34] None
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