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LIGHT(4) Device Drivers Manual (sgi) LIGHT(4)

SGI Light graphics

light* at gio?
wsdisplay* at light?

The light driver supports the SGI ‘Light’ series of graphics controllers, also known as ‘Entry’ or ‘Starter’ graphics, and designated as LG1 or LG2, which may be found in Indigo and Crimson systems.
These controllers have a fixed 1024x768 resolution with 8-bit colour depth. Unlike most SGI offerings, both 13W3 and VGA video cables are supported.

gio(4), grtwo(4), impact(4), newport(4), wscons(4), wsdisplay(4)

The light driver first appeared in NetBSD 5.0 and was ported to OpenBSD 5.2.

The light driver was written by Stephen M. Rumble.

Much is unknown about the REX chipset. Therefore, the driver relies on the PROM to properly initialise the graphics.
December 7, 2014 OpenBSD-current