TDVFB(4) | Device Drivers Manual | TDVFB(4) |
tdvfb
—
tdvfb* at pci?
wsdisplay* at tdvfb?
options TDVFB_CONSOLE
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 independent. 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
console.
3Dfx Interactive, Inc., Voodoo2 Graphics Engine for 3D Game Acceleration, Revision 1.16, December 1, 1999.
tdvfb
device first appeared in
NetBSD 7.0.
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.
tdvfb
driver has minimal support for this engine. It is activated only when the card
is running in a 16-bit mode (this is a hardware limitation).
Video mode is hard-coded to 800x600 at 60Hz. Default bit depth for little endian machines is 16-bit, for big endian machines it is 32-bit. Resolution and depth should be selectable at least via kernel configuration 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 correctly on big endian machines at the moment (this is a driver problem).
August 3, 2012 | NetBSD 9.4 |