|The manual is here:|
Go down to the 'trinity 400' line and then in its far right column download the 1,2,3 and 4 links. Download them (or copy them) to their own folder named tyan or something you'll remember and then run the first file. That will extract the others into a single pdf file.
From page 34
"During POST, you can start the Setup program in one of two ways:
1. By pressing <Del> immediately after switching the system on, or
2. By pressing the <Del> key when the following message appears briefly at
the bottom of the screen during POST:
TO ENTER SETUP BEFORE BOOT PRESS DEL KEY
If the message disappears before you respond and you still wish to enter
Setup, restart the system to try again by turning it OFF then ON or pressing
the RESET button on the system case. You may also restart by simultaneously
pressing <Ctrl>, <Alt>, and <Delete> keys. If you do not press the keys at the
correct time and the system does not boot, an error message appears and you
are again asked to
PRESS F1 TO CONTINUE, DEL TO ENTER SETUP"
Also you can usually hit the 'pause' key while it's posting to stop the process so you can see the screen.