User Guide CC9-SAMBA •
CompactPCI®
Pentium M CPU Board
© EKF -30- ekf.com
The watchdog is in a passive state after a system reset. There is no need to trigger it at boot time.
Once the GPO21 of the ICH4 has sent a pulse, the watchdog is activated. If the duration between two
trigger pulses exceeds a period of 1000ms, the watchdog times out and a system reset will be
generated. The watchdog remains in the active state until the next system reset. There is no way to
disable it once it was started.
Firmware Hub (Flash BIOS)
The BIOS is stored in an 82802 8Mbit Firmware Hub (there are second sources in use with deviant
part numbers). The firmware hub contains a nonvolatile memory core based on flash technology,
allowing the BIOS to be upgraded.
The FWH can be reprogrammed (if suitable) by a DOS based tool. This program and the latest CC9-
SAMBA BIOS are available from the EKF website. Read carefully the enclosed instructions. If the
programming procedure fails e.g. caused by a power interruption, the CC9-SAMBA may no more be
operable. In this case you would have to send in the board, because the BIOS is directly soldered to
the PCB and cannot be changed by the user.
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