Intel 273246-002 manual Integrated Bios Debugger Running Over a Remote Terminal

BIOS Quick Reference

To activate the debugger at any time from the main console, press the left shift and the control keys together. A display similar to the one in the HYPERTERMINAL session below (Figure 5-9) will appear, containing the title, “Embedded BIOS Debugger Breakpoint Trap” and a snapshot of the processor general registers.

Figure 5-9. Integrated BIOS Debugger Running Over a Remote Terminal

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 the debugger, then DOS will still be waiting for its command, and will not prompt again until you press ENTER again.

The debugger can also be entered from the Setup Screen System, and as a boot activity (see “Basic CMOS Configuration Screen” on page 5-3),as a last ditch effort during board bring-up and development if no bootable device is available.

If your version of DOS, an application, or any OEM-supplied BIOS extensions have debugging code (i.e., “INT 3” instructions) remaining, then these will invoke the debugger automatically, although this is not an error. To continue, use the “G” command. When Embedded BIOS is adapted by the OEM, the debugger can be removed from the final production BIOS, and superfluous debugging code in the application will not cause the debugger to be invoked.

Celeron™ Processor Development Kit Manual 5-11