ZX(4) - Device Drivers Manual (sparc64) #
ZX(4) - Device Drivers Manual (sparc64)
NAME #
zx - accelerated 24-bit color frame buffer
SYNOPSIS #
zx* at sbus? wsdisplay* at zx?
DESCRIPTION #
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 #
The following resolutions are supported by the ZX frame buffer:
**Resolution** **Refresh Rate** **Details**
`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, CPD-1790
`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 #
intro(4), sbus(4), wscons(4), wsdisplay(4)
CAVEATS #
There is currently no software interface to change the frame buffer resolution at runtime.
OpenBSD 7.5 - September 3, 2011