TVRX(4)               OpenBSD Programmer's Manual (HP300)              TVRX(4)

NAME
     tvrx - HP98705 TurboVRX ``TigerShark'' frame buffer

SYNOPSIS
     tvrx*      at dio?
     wsdisplay* at tvrx?

DESCRIPTION
     The TurboVRX frame buffer is an accelerated, high resolution (1280x1024)
     external display, connected to a 98702 DIO-II interface board.  Models
     98705A and 98705C are 8-bit color frame buffers, while model 98705B is
     16-bit color with a 16-bit Z-buffer.  All models also have four overlay
     planes.

     The tvrx driver provides a frame buffer abstraction to the wscons(4) con-
     sole framework.

     Currently, the driver can only use one overlay plane, and will run as an
     unaccelerated monochrome frame buffer.

     The TurboVRX cards can be configured using the 5 DIP switches selector on
     the interface board to define the ``select code''.  The select code value
     is computed by adding 133 to the number made from the five binary digits.
     The default settings, with the two MSB switches set to 1 and the three
     LSB switches set to 0, provide a select code of 157.

SEE ALSO
     dio(4), intro(4), wscons(4), wsdisplay(4)

OpenBSD 4.7                     March 26, 2008                               1
