ADLINK ReadyBoard 910 - Manual (Page 40)

Chapter 3 Hardware
34 Reference Manual ReadyBoard 910
Oops! Jumper (BIOS Recovery)
The Oops! jumper 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,
forcing the BIOS to use the default settings. Connect the DTR pin to the RI pin 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 go into BIOS Setup. Change the desired BIOS settings, or select the
default settings, and save 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
serial port DB9 connector at Serial Port 1, as shown in
Figure 3-2 .
Figure 3-2. Oops! Jumper Connection
Serial Console
The ReadyBoard 910 supports the serial console (or console redirection) feature. This I/O function is
provided by an ANSI-compatible serial terminal, or the 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 connecting a standard null modem cable or a modified serial
cable (or “Hot Cable”) between one of the serial ports, such as Serial 1, and the serial terminal or a PC with
communications software. The BIOS Setup Utility controls the serial console settings on the
ReadyBoard 910. Refer to
Chapter 4 , BIOS Setup for the settings of the serial console option, the serial
terminal, or PC with communications software and the connection procedure.
Hot (Serial) Cable
To convert a standard serial cable to a Hot Cable, certain pins must be shorted together at the Serial port
(DB9) connector. Short together pins 7 (RTS) and 9 (RI) on Serial port 1 (DB9) connector as shown in
Figure 3-3 .
Figure 3-3. Hot Cable Jumper
NOTE The COM0 port is the only serial port on the board that supports the Oops! Jumper
function.
RB910Oopsjumper_c
5 4 3 2 1
9 8 7 6
Standard DB9
Serial Port 1
(CN17, COM0)
Connector (Male)
Front View
Standard DB9 Serial
Port Connector (Female)
Rear View
5 4 3 2 1
9 8 7 6
RB910_hotcable