Novell SUSE LINUX ENTERPRISE DESKTOP 11 SP1 - 8-18-2010 VIRTUALIZATION WITH ZEN Manual page 136

(serial /dev/ttyS0)
2.21 stdvga
Defines if a standard vga (cirrus logic) device should be used. Example:
(stdvga 0)
2.22 timer_mode
Defines if the timer should be delayed when ticks are missed or if the real time should
always be used. 0 delays the virtual time, 1 always uses the real time.
(timer_mode 0)
2.23 usb
Defines if USB devices should be emulated. Example:
(usb 1)
2.24 usbdevice
Adds the specified USB device to the VM Guest.
(usbdevice tablet)
2.25 vnc
Defines if VNC should be enabled for graphics. Example:
(vnc 1)
2.26 vncunused
If not set to 0, this option enables the VNC server on the first unused port above 5900.
(vncunused 1)
2.27 xauthority
When using SDL, the specified file is used to define access rights. If not set, the value
from the XAUTHORITY environment variable is used. Example:
(xauthority /root/.Xauthority)
126 Virtualization with Xen