Intel 273246-002 manual Bios and Pre-Boot Features, Power-On Self-Test Post

BIOS Quick Reference 5

The Celeron processor evaluation board is licensed with a single copy of Embedded BIOS and Embedded DOS software from General Software, Inc.1 This software is provided for demonstration purposes only and must be licensed directly from General Software, Inc. for integration with new designs. General Software may be reached at (800) 850-5755, on the web at http://www.gensw.com, or via email at sales@gensw.com.

BIOS updates may periodically be posted to the Intel Developers’ web site at

http://developer.intel.com/.

5.1BIOS and Pre-Boot Features

The system’s pre-boot environment is managed with an adaptation of Embedded BIOS from General Software. The pre-boot environment includes POST, Setup Screen System, Manufacturing Mode, Console Redirection, Windows CE Loader (CE Ready), and Integrated BIOS Debugger. A REFLASH tool is also available to update the BIOS image with new builds of Embedded BIOS that may be obtained from General Software.

Before using the system, please read the following to properly configure CMOS settings, and learn how to use the embedded features of the pre-boot firmware, Embedded BIOS.

The last two sections of this chapter provide the BIOS POST Codes and Beep codes.

5.2Power-On Self-Test (POST)

When the system is powered on, Embedded BIOS tests and initializes the hardware and programs the chipset and other peripheral components. During this time, POST progress codes are written by the system BIOS to I/O port 80H, allowing the user to monitor the progress with a special monitor. “Embedded BIOS POST Codes” on page 5-12lists the POST codes and their meanings.

During early POST, no video is available to display error messages should a critical error be encountered; therefore, POST uses beeps on the speaker to indicate the failure of a critical system component during this time. Consult “Embedded BIOS Beep Codes” on page 5-15for a list of Beep codes used by the system’s BIOS.

POST displays its progress on the system video device, which may be the video screen if a VGA card is used, or on a terminal emulation program’s screen if output is redirected over a serial port.

1.General Software™, the GS Logo, Embedded BIOS™, BIOStart™, CE-Ready™, and Embedded DOS™ are trademarks or registered trademarks of General Software, Inc.

Celeron™ Processor Development Kit Manual 5-1