Chapter 8
Genlocking Sun XVR-4000 Graphics Accelerators
67
Enabling Genlocking for Graphics
Accelerators
This example uses the Sun XVR-4000 graphics accelerator and the device names
zulu0
and
zulu1
. When genlocking with other graphics accelerators, use the
appropriated device names.
1. Designate a Sun XVR-4000 graphics accelerator as the master.
You may use the Sun XVR-4000 graphics accelerator that serves as the boot/console
head for that system.
You may select any device (that is,
zulu0
,
zulu1
, ... and so on) to be the master Sun
XVR-4000 graphics accelerator device. If both framelock and genlock are enabled,
you must cable the same device to be master for both.
2. Make sure that each Sun XVR-4000 graphics accelerator installed is running a
video format with frame refresh rate identical to the video format running on the
Sun XVR-4000 accelerator in master mode.
a. Check the resolution of a Sun XVR-4000 graphics accelerator by using the
fbconfig
command.
You must repeat this command for each Sun XVR-4000 graphics accelerator in the
system or systems to be genlocked.
b. Change the resolution of a Sun XVR-4000 graphics accelerator using the
fbconfig
command.
If the resolution on each Sun XVR-4000 graphics accelerator is not the same, you
must change it to match the Sun XVR-4000 graphics accelerator in master mode.
You must configure each board separately (that is, for
zulu0
,
zulu1
, and so on).
The resolution shown below is an example only, you can use different video
formats such as
SUNW_STD_1600x1000x66
Log out of the X Window system, and then log back in for the resolutions to take
effect. If you do not wish the genlock or bothlock synchronization to be repeated
when the X Window system restarts, simply
exit
the window/desktop session
instead of logging out or disable genlock (see “Disabling Genlock” on page 72).
host% fbconfig -dev zulu0 -prconf
host% fbconfig -dev zulu0 -res
SUNW_STD_1280x1024x76
host% fbconfig -dev zulu1 -res
SUNW_STD_1280x1024x76
