System information

6-16
AlphaServer 800 Service Guide
Variable Attributes Description
tga_sync_green
(continued)
This environment variable must be set correctly
so that the graphics monitor will synchronize.
The parameter is a bit mask, where the least
significant bit (LSB) sets the vertical SYNC for
the first graphics card found, the second for the
second found, and so on.
The command set tga_sync_green 00 sets all
graphics cards to synchronize on a separate
vertical SYNC line, as required by some
monitors. See the monitor documentation for all
other information.
ff—Synchronizes the graphics monitor on
systems that do not use a ZLXp-E PCI graphics
accelerator (default setting).
00—Synchronizes the graphics monitor on
systems with a ZLXp-E PCI graphics accelerator.
tt_allow_login NV Enables or disables login to the SRM console
firmware on alternative console ports.
0—Disables login on alternative console ports.
1—Enables login on alternative console ports
(default setting).
If the console output device is set to serial, set
tt_allow_login 1 allows you to log in on the
primary COM1(MMJ) port, or alternate COM2
port, or the graphics monitor.
If the console output device is set to graphics, set
tt_allow_login 1 allows you to log in through
either the COM1(MMJ) or COM2 console port.
NOTE: Whenever you use the set command to reset an environment variable, you
must initialize the system to put the new setting into effect. Initialize the
system by entering the init command or pressing the Reset button.