ADLINK CoreModule 720 - Manual (Page 40)

Chapter 3 Hardware
34 Reference Manual CoreModule 720
Oops! Jumper (BIOS Recovery)
The Oops! jumper function is provided in the event the BIOS settings you have selected prevent you from
booting the system. By using the Oops! jumper you can prevent the current BIOS settings in flash from
being loaded, allowing you to boot using default settings.
Use a jumper to connect the DTR pin (4) to the RI pin (9) on Serial Port 1 (COM0) prior to boot up to
prevent the present BIOS settings from loading. After booting with the Oops! jumper in place, remove the
Oops! jumper and return to BIOS Setup. You must now load factory defaults by selecting Restore Defaults
from the Save & Exit menu. Then select Save Changes and Exit to reboot the system. Now you can modify
the default settings to your desired values. Ensure you save the changes before rebooting the system.
To convert a standard DB9 connector to an Oops! jumper, short together the DTR (4) and RI (9) pins on the
front of the connector as shown in Figure 3-1 on the Serial Port 1 DB9 connector.
Figure 3-1. Oops! Jumper Serial Port (DB9)
Serial Console
The CoreModule 720 BIOS supports the serial console (or console redirection) feature. This I/O function is
ANSI-compatible with a serial terminal or with equivalent terminal emulation software running on another
system. This can be very useful when setting up the BIOS on a production line for systems that are not
connected to a keyboard and display.
Serial Console Setup
The serial console feature is implemented by entering the serial console settings in the BIOS Setup Utility
and connecting the appropriate serial cable (a standard null modem serial cable or “Hot Cable”) between one
of the serial ports (COM0) and the serial terminal or a PC with communications software.
Hot (Serial) Cable
To convert a standard serial cable to a “Hot Cable”, short together the RTS (7) and RI (9) pins on the serial
port DB9 connector as shown in Figure 3-2 .
Figure 3-2. Serial Console Jumper
Temperature Monitoring
The temperature monitoring function is performed by the ON Semiconductor, ADM1032 temperature
monitor, which takes inputs from the thermal diodes in the CPU. The ADM1032 chip uses the two-wire
SMBus interface to communicate with the other devices, taking temperature readings and issuing alerts to
the PCH when a reading surpasses over or under temperature limits. Refer to the ADM1032 data sheet for
more information at:
http://www.onsemi.com/pub_link/Collateral/ADM1032-D.PDF
CM720_Oopsjump
Standard DB9 Serial
Port Connector (Male)
Front View
5 4 3 2 1
9 8 7 6
CM720_HotCable
Standard DB9 Serial
Port Connector (Female)
Rear View
5 4 3 2 1
9 8 7 6