Video Controller
The
2 MB of video SDRAM and support circuitry for an embedded SVGA video subsystem. The ATI Rage XL chip contains a SVGA video controller, clock generator, 2D and 3D engine, and RAMDAC in a
The SVGA subsystem supports a variety of modes, up to 1600 x 1200 resolution in 8/16/24/32 bpp modes under 2D, and up to 1024 x 768 resolution in 8/16/24/32 bpp modes under 3D. It also supports both CRT and LCD monitors up to 100 Hz vertical refresh rate.
The
Video Modes
The Rage XL chip supports all standard IBM VGA modes. The following table shows the 2D/3D modes supported for both CRT and LCD. The table specifies the minimum memory requirement for various display resolution, refresh rates, and color depths.
Table 11. | Video Modes |
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2D Mode |
| Refresh Rate (Hz) |
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| 8 bpp | 16 bpp | 24 bpp | 32 bpp | ||
640x480 |
| 60, 72, 75, 90, 100 | Supported | Supported | Supported | Supported |
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800x600 |
| 60, 70, 75, 90, 100 | Supported | Supported | Supported | Supported |
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1024x768 |
| 60, 72, 75, 90, 100 | Supported | Supported | Supported | Supported |
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1280x1024 |
| 43, 60 | Supported | Supported | Supported | Supported |
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1280x1024 |
| 70, 72 | Supported | – | Supported | Supported |
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1600x1200 |
| 60, 66 | Supported | Supported | Supported | Supported |
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1600x1200 |
| 76, 85 | Supported | Supported | Supported | – |
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3D Mode |
| Refresh Rate (Hz) | Video Mode Support with Z Buffer Enabled | |||
640x480 |
| 60,72,75,90,100 | Supported | Supported | Supported | Supported |
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800x600 |
| 60,70,75,90,100 | Supported | Supported | Supported | Supported |
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1024x768 |
| 60,72,75,90,100 | Supported | Supported | Supported | Supported |
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1280x1024 |
| 43,60,70,72 | Supported | Supported | – | – |
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1600x1200 |
| 60,66,76,85 | Supported | – | – | – |
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Description | 37 |