TDVFB(4)                NetBSD Kernel Interfaces Manual               TDVFB(4)

NAME
     tdvfb -- 3Dfx Voodoo Graphics / Voodoo 2 framebuffer driver

SYNOPSIS
     tdvfb* at pci?
     wsdisplay* at tdvfb?
     options TDVFB_CONSOLE

DESCRIPTION
     The tdvfb driver provides support for the graphics cards based on 3Dfx
     Voodoo Graphics (SST-1) and 3Dfx Voodoo2 (CVG) chipsets and provides an
     interface for the machine independent wscons(4) driver.

     Since both Voodoo Graphics and Voodoo2 were originally designed as a 3D-
     only solutions, most boards do not have any kind of firmware.  The tdvfb
     driver is able to do low level initialization (boot) of the board, which
     means that it can be used on all architectures and is truly machine inde-
     pendent.  However, it also means that driver cannot detect automatically
     if the card is used as a console.  The TDVFB_CONSOLE option is provided
     and should be set if the tdvfb driver is intended to be used as a con-
     sole.

SEE ALSO
     genfb(4), voodoofb(4), wsdisplay(4)

     3Dfx Interactive, Inc., Voodoo2 Graphics Engine for 3D Game Acceleration,
     Revision 1.16, December 1, 1999.

HISTORY
     The tdvfb device first appeared in NetBSD 7.0.

AUTHORS
     The tdvfb driver was written by Radoslaw Kujawa.  3Dfx Glide 2.x source
     code, Linux driver by Ghozlane Toumi were used as reference.  The
     wscons(4) attachment code is based mostly on the genfb(4) driver by
     Michael Lorenz.

BUGS
     3Dfx Voodoo2 has a simple 2D graphics engine.  The tdvfb driver has mini-
     mal support for this engine.  It is activated only when the card is run-
     ning in a 16-bit mode (this is a hardware limitation).

     Video mode is hard-coded to 800x600 at 60Hz.  Default bit depth for lit-
     tle endian machines is 16-bit, for big endian machines it is 32-bit.
     Resolution and depth should be selectable at least via kernel configura-
     tion file.  It is not possible to detect what resolutions are supported
     by the monitor, since Voodoo Graphics and Voodoo2 have no DDC interface.

     8-bit depth is not supported by the hardware.  16-bit depth is supported
     by the hardware and is the preferred depth, however it does not work cor-
     rectly on big endian machines at the moment (this is a driver problem).

     Sometimes the driver fails to detect RAMDAC.

NetBSD 6.0                      August 3, 2012                      NetBSD 6.0

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