NAME    [Toc]    [Back]

     zx - accelerated 24-bit color frame buffer

SYNOPSIS    [Toc]    [Back]

     zx* at sbus? slot ? offset ?
     wsdisplay* at zx?

DESCRIPTION    [Toc]    [Back]

     The ZX and TurboZX are dual-slot SBus color  frame  buffers,
with graphics
     acceleration  and overlay capabilities.  They are also known
as the Sun
     ``Leo'' graphics card.

     The zx driver interfaces the frame buffer with the wscons(4)
console
     framework.   It  does not provide direct device driver entry
points but
     makes its functions available via the internal  wsdisplay(4)
interface.

DISPLAY RESOLUTION    [Toc]    [Back]

     The  following  resolutions  are  supported  by the ZX frame
buffer:

     Resolution    Refresh Rate

     1280x1024     76 Hz           Non-interlaced
     1280x1024     67 Hz           Non-interlaced
     1152x900      76 Hz           Non-interlaced
     1152x900      66 Hz           Non-interlaced
     1024x768      76 Hz           Non-interlaced
     1024x768      60 Hz           Non-interlaced
     960x680       112 Hz          Stereo, non-interlaced
                                   56 Hz field rate per eye
     960x680       108 Hz          Stereo, non-interlaced
                                   54 Hz field rate per eye
     770x575       50 Hz           Interlaced - PAL
     640x480       59.94 Hz        Interlaced - NTSC

     If the ZX frame buffer is connected to  a  monitor  at  boot
time, it will
     select  its display resolution depending of the monitor `select code' provided
 by the 13W3 connector.  If the  frame  buffer  is  not
connected to a
     monitor,  the  default  resolution of 1152x900, with a 66 Hz
refresh rate,
     will be selected.  The selected resolutions are:

     Monitor       Resolution    Refresh    Monitor
     sense code                  Rate       Type

     0             1024x768      76 Hz      X449A
     1             1152x900      66 Hz
     2             1280x1024     76 Hz      X248A, GDM-205S
     3               1152x900        66   Hz         GDM-1955A15,
GDM-1604A15, Li0
     4             1280x1024     67 Hz      GDM-20D10, GDM-1962
     5             1152x900      66 Hz
     6             1152x900      76 Hz      GDM-1662B, 17SMM4
     7             1152x900      66 Hz

SEE ALSO    [Toc]    [Back]

     agten(4),  bwtwo(4),  cgsix(4),  cgthree(4), creator(4), intro(4), mgx(4),
     rfx(4),   sbus(4),   vgafb(4),   wscons(4),    wsdisplay(4),
boot_config(8),
     config(8)

CAVEATS    [Toc]    [Back]

     There is currently no software interface to change the frame
buffer resolution
 at runtime.

OpenBSD     3.6                           June      20,      2004