TGA(4)                OpenBSD Programmer's Manual (Alpha)               TGA(4)

NAME
     tga - TGA graphics driver

SYNOPSIS
     tga* at pci?
     wsdisplay* at tga?

DESCRIPTION
     This driver handles TGA graphics hardware within the wscons(4) console
     framework.

     On TGA adapters, the resolution is set on the card and is not changed at
     runtime.  On some TGA models, there are four DIP switches.  On other mod-
     els, there is a rotary switch with positions 0-F.  There are also some
     that use jumpers.

   TGA Switch Settings

           Switch     Pixel         Monitor       Refresh
           Setting    Freq (MHz)    Resolution    Rate (MHz)

           0          130           1280x1024     72
           1          119           1280x1024     66
           2          108           1280x1024     60
           3          104           1152x900      72
           4          93            1152x900      66
           5          75            1024x768      70
           6          74            1024x768      72
           7          69            1024x864      60
           8          65            1024x768      60
           9          50            800x600       72
           A          40            800x600       60
           B          32            640x480       72
           C          25            640x480       60

     The settings for D, E, and F are for 1600x1200 on some cards, but there
     are no guarantees.

     There are also a couple of extra jumpers on some cards.  One of these
     jumpers often selects the card to be the primary display.  Exactly one of
     the cards in your machine should have that jumper on.  If you have extra
     cards, they should have the jumper off.

SEE ALSO
     intro(4), pci(4), wscons(4), wsdisplay(4), wsconscfg(8)

BUGS
     There are some problems with the background randomly switching between
     black and blue.

OpenBSD 4.7                    December 23, 2007                             1
