Thunder i860 S2603
13
C. BIOS Boot Block (J43)
In case there is an error during flashing, the BIOS Boot Block provides a protection feature for the BIOS.
D. DIP Switch (J26) (optional)
This is a DIP switch for internal purposes. If present on the Thunder i860, please make sure that ALL
switches must always have positions 1 through 4 switched to “OFF” (in the bottom position).
NOTE:
DO NOT alter this jumper unless you are absolutely sure you fully understand this
jumper’s effects on your system.
Tyan takes no reponsibility and will not be held liable for damage related to alter-
ation of this jumper from its factory-set default.
Default is OPEN
.
* default is
OPEN
J43
open
unprotect
close
protect
ON
1
2
3
4
All switches are in the
OFF
position