for 1 month. This Trial Version is compatible to IRIX 6.x on most SGI worksta-
tions and shows the most important features of ERNA-3D. It permits the inte-
rested user to create complicated molecular structures within minutes. Beyond
that, the user learns the unique interactive behaviour of ERNA-3D by using the
three-dimensional cursor called the "Selector" and he/she can view the crea-
ted structures in real three dimensions.
by using the IRIX shell command "uncompress ERNA-3D_DV.tar.Z". After that,
please un-tar the created file in a chosen destination directory by using the
command "tar xpf ERNA-3D_DV.tar". After the TAR-programme has created
all necessary sub-directories, please change your working directory to the di-
rectory "erna_3d". Eventually it could be necessary to change the permissions
of the extracted files, so that you can read and execute them. Please change
these permissions by using the command "chmod -R a+rx *".
The ERNA-3D Demo Software is started by the command "ERNA-3D", which is
typed into the console window of your SGI workstation. After ERNA-3D has
been started, an "Startup Animation" will be executed by ERNA-3D which ex-
plains the extraordinary capabilites of the ERNA-3D software. This Startup Ani-
mation can be terminated by the pressing of the
or by renameing the file "ERNA-3D-DEMO.cmd" in the sub-directory "cmddir".
it is often necessary to choose the correct "setmon" commands which switch to
and fro the Stereo Mode of the computer monitor.
Please note that the ERNA-3D software reads and executes a file called "ste-
reo.erna" which can be found in the sub-directory "ernadir". If you have problems
to switch to and fro the correct Stereo Mode with your computer screen, please
overwrite the file "stereo.erna" with one of the files "stereo.erna_INDIGO2",
"stereo.erna_OCTANE" or "stereo.erna_ONYX2" which you will also find in this
sub-directory. Only the file "stereo.erna" will be executed by the ERNA-3D soft-
ware.
Please ensure that you have checked in advance that your computer monitor is
capable of to be switched to the Stereo Mode (the maximum picture repeating ra-
te must be at least 120 Hz) otherwise it could be damaged!
WE DO NOT ASSUME ANY RESPONSIBILITIES FOR SUCH DAMAGES!!!
But most of the computer monitors from Silicon Graphics are capable of to be
switched into the Stereo Mode.
If you have problems to find the correct Stereo Commands for your SGI worksta-
tion please send us an e-mail.