---
name: "r128"
section: "4x"
platform: "linux"
package: "xserver-xfree86"
version: "4.3.0.dfsg.1-14sarge7"
release: "Debian 3.1 (Sarge)"
platforms: ["linux"]
url: "https://new.carta.tech/r128/4x"
---

# r128(4x)

ATI Rage 128 video driver

## NAME

r128 - ATI Rage 128 video driver

## SYNOPSIS

```
Section "Device"
  Identifier "devname"
  Driver "r128"
  ...
EndSection
```

## DESCRIPTION

**r128** is an XFree86 driver for ATI Rage 128 based video cards.  It contains full support for 8, 15, 16 and 24 bit pixel depths, hardware acceleration of drawing primitives, hardware cursor, video modes up to 1800x1440 @ 70Hz, doublescan modes (e.g., 320x200 and 320x240), gamma correction at all pixel depths, a fully programming dot clock and robust text mode restoration for VT switching.

## SUPPORTED HARDWARE

The **r128** driver supports all ATI Rage 128 based video cards including the Rage Fury AGP 32MB, the XPERT 128 AGP 16MB and the XPERT 99 AGP 8MB.

## CONFIGURATION DETAILS

Please refer to [XF86Config-4(5x)](/XF86Config-4/5x.md) for general configuration details.  This section only covers configuration details specific to this driver.

The driver auto-detects all device information necessary to initialize the card.  However, if you have problems with auto-detection, you can specify:

VideoRam - in kilobytes\
 MemBase  - physical address of the linear framebuffer\
 IOBase   - physical address of the MMIO registers\
 ChipID   - PCI DEVICE ID

In addition, the following driver **Options** are supported:

- **Option "SWcursor" "***boolean***"**

  Selects software cursor.  The default is **off.**

- **Option "NoAccel" "***boolean***"**

  Enables or disables all hardware acceleration.  The default is to **enable** hardware acceleration.

- **Option "Dac6Bit" "***boolean***"**

  Enables or disables the use of 6 bits per color component when in 8 bpp mode (emulates VGA mode).  By default, all 8 bits per color component are used.  The default is **off.**

- **Option "VideoKey" "***integer***"**

  This overrides the default pixel value for the YUV video overlay key. The default value is **undefined.**

- **Option "Display" "***string***"**

  Select display mode for devices which support flat panels. Supported modes are:

  **"FP"** - use flat panel;

  **"CRT"** - use cathode ray tube;

  **"Mirror"** - use both FP and CRT;

  **"BIOS"** - use mode as configured in the BIOS.

  The default is **FP.**

The following **Options** are mostly important for non-x86 architectures:

- **Option "ProgramFPRegs" "***boolean***"**

  Enable or disable programming of the flat panel registers. Beware that this may damage your panel, so use this **at your own risk.** The default depends on the device.

- **Option "PanelWidth" "***integer***"**

  - **Option "PanelHeight" "***integer***"**

  Override the flat panel dimensions in pixels. They are used to program the flat panel registers and normally determined using the video card BIOS. If the wrong dimensions are used, the system may hang.

- **Option "UseFBDev" "***boolean***"**

  Enable or disable use of an OS-specific framebuffer device interface (which is not supported on all OSs).  See [fbdevhw(4x)](/fbdevhw/4x.md) for further information. Default: off.

- **Option "DMAForXv" "***boolean***"**

  Try or don't try to use DMA for Xv image transfers. This will reduce CPU usage when playing big videos like DVDs, but may cause instabilities. Default: off.

The following additional **Options** are supported:

- **Option "ShowCache" "***boolean***"**

  Enable or disable viewing offscreen cache memory.  A development debug option.  Default: off.

## SEE ALSO

XFree86(1), [XF86Config-4(5x)](/XF86Config-4/5x.md), xf86config(1), [Xserver(1)](/Xserver/1.md), [X(7x)](/X/7x.md)

## AUTHORS

```
Rickard E. (Rik) Faith   faith@precisioninsight.com
Kevin E. Martin          kevin@precisioninsight.com
```