ZX(4) | Device Drivers Manual (sparc64) | ZX(4)

# 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.

September 3, 2011 | Debian