20
HARDWARE INSTALLATION
2.15 FWH Lock Jumper (JP6)
This jumper controls the Firmware Hub (FWH) lock-function. When set to “LOCK”, it prevents
programming or block erase to the top block of FWH. There are 8 blocks of addressable space
controlled by the FWH. The top block (block 7, also called “Boot Block”) stores some critical
codes. To guard against accidents (such as a virus, program bug etc.), we recommend that you
lock this block. Even if other blocks were erased, you could still recover your system easily by
following the 2 steps below:
1. Reboot with a DOS (95/98) system boot floppy disk.
2. Reflash BIOS according to section 5.3, Step 5 (Page 58).
FWH Lock Jumper
1
1
U N L O C K
L O C K E D
1
J P 6
F W H _ L o c k
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