RENDITION(4)RENDITION(4)NAMErendition - Rendition video driver
SYNOPSIS
Section "Device"
Identifier "devname"
Driver "rendition"
...
EndSection
DESCRIPTIONrendition is an XFree86 driver for Rendition/Micron based
video cards. The driver supports following framebuffer
depths: 8, 15 (Verite V1000 only), 16 and 24. Acceleration
and multi-head configurations are not supported yet, but
are work in progress.
SUPPORTED HARDWARE
The rendition driver supports PCI and AGP video cards
based on the following Rendition/Micron chips:
V1000 Verite V1000 based cards.
V2100 Verite V2100 based cards. Diamond Stealth II
S220 is the only known such card.
V2200 Verite V2200 based cards.
CONFIGURATION DETAILS
Please refer to XF86Config(5) for general configuration
details. This section only covers configuration details
specific to this driver.
The driver auto-detects the chipset type, but the follow-
ing ChipSet names may optionally be specified in the con-
fig file "Device" section, and will override the auto-
detection:
"v1000", "v2100", "v2200".
The driver will auto-detect the amount of video memory
present for all chips. If the amount of memory is detected
incorrectly, the actual amount of video memory should be
specified with a VideoRam entry in the config file
"Device" section.
The following driver Options are supported:
Option "SWCursor" "boolean"
Disables use of the hardware cursor. Default: use
HW-cursor.
Option "OverclockMem" "boolean"
Increases the Mem/Sys clock to 125MHz/60MHz from
XFree86 Version 4.0.2 1
RENDITION(4)RENDITION(4)
standard 110MHz/50MHz. Default: Not overclocked.
Option "DacSpeed" "MHz"
Run the memory at a higher clock. Useful on some
cards with display glitches at higher resolutions.
But adds the risk to damage the hardware. Use with
caution.
Option "FramebufferWC" "boolean"
If writecombine is disabled in BIOS, and you add
this option in configuration file, then the driver
will try to request writecombined access to the
framebuffer. This can drastically increase the per-
formance on unaccelerated server. Requires that
"MTRR"-support is compiled into the OS-kernel.
Default: Disabled for V1000, enabled for
V2100/V2200.
Option "NoDDC" "boolean"
Disable probing of DDC-information from your moni-
tor. This information is not used yet and is only
there for informational purposes. This might change
before final XFree86 4.0 release. Safe to disable
if you experience problems during startup of X-
server. Default: Probe DDC.
Option "ShadowFB" "boolean"
If this option is enabled, the driver will cause
the CPU to do each drawing operation first into a
shadow frame buffer in system virtual memory and
then copy the result into video memory. If this
option is not active, the CPU will draw directly
into video memory. Enabling this option is benefi-
cial for those systems where reading from video
memory is, on average, slower than the correspond-
ing read/modify/write operation in system virtual
memory. This is normally the case for PCI or AGP
adapters, and, so, this option is enabled by
default unless acceleration is enabled. Default:
Enabled unless acceleration is used.
Option "Rotate" "CW"
Option "Rotate" "CCW"
Rotate the display clockwise or counterclockwise.
This mode is unaccelerated. Default: no rotation.
Notes For the moment the driver defaults to not request
write-combine for any chipset as there has been
indications of problems with it. Use Option "MTRR"
to let the driver request write-combining of memory
access on the video board.
XFree86 Version 4.0.2 2
RENDITION(4)RENDITION(4)SEE ALSOXFree86(1), XF86Config(5), xf86config(1), Xserver(1), X(7)AUTHORS
Authors include: Marc Langenbach, Dejan Ilic
XFree86 Version 4.0.2 3
