BIOS Quick Reference • CC5-RAVE
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EKF Elektronik GmbH * Philipp-Reis-Str. 4 * D-59065 HAMM (Germany)
Tel. +49 (0)2381/6890-0 * Fax. +49 (0)2381/6890-90 * E-Mail [email protected] * Internet http://www.ekf.de
System BIOS Debugger
The Embedded BIOS Integrated Debugger may be invoked from the Setup Screen main menu, or
on encountering selected levels of the POST code (see the Custom Configuration Setup Screen -
‘Call Debugger dur. POST’ options), or by pressing <CTRL><SHIFT>! at any time. Once invoked,
the debugger will display the debugger prompt:
EB43DBG:
and await debugger commands. To resume back to the Setup Screen main menu, type the
following command, which instructs the debugger to “go”:
EB43DBG: G <ENTER>
The debugger can be a valuable tool to aid the board bringup process on new designs similar to
the evaluation board. It supports a DOS SYMDEB-style command line interface, and can be used
on the main console’s keyboard and screen, or over a redirected connection to a terminal
program (see “Console Redirection”).
To activate the debugger at any time from the main console, press the left shift and the control
keys together. A display will appear, containing the title, “Embedded BIOS Debugger Breakpoint
Trap” and a snapshot of the processor general registers. To leave the debugger and resume the
interrupted activity (whether POST, BIOS, DOS, Windows, or an application program), enter the
“G” command (short for “go”) and press ENTER. If you were at a DOS prompt when you entered
