219AB2x280 F1 System BIOSIntroductionThis chapter describes the BIOS for AB2x280 F1blade modules. TheAB2x280 F1blade modules use a AMI™ ROM BIOS that is stored in aflash chip. This BIOS can be easily upgraded using a floppy disk-basedprogram.BIOSBIOS stands for Basic Input Output System. The AMI BIOS flash chipstores the system parameters, types of disk drives, video displays, etc. inthe CMOS. The CMOS memory requires very little electrical power.When the blade unit is turned off, a backup battery provides power tothe BIOS flash chip, enabling it to retain system parameters. Each timethe blade is powered on it is configured with the values stored in theBIOS ROM by the system BIOS, which gains control at boot up.How To Change the Configuration DataThe CMOS information that determines the system parameters may bechanged by entering the BIOS Setup utility. This Setup utility can beaccessed by pressing the key at the appropriate time duringsystem boot. (See "Starting the Setup Utility" below.)Starting the Setup UtilityNormally, the only visible POST (Power-On Self-Test) routine is thememory test. As the memory is being tested, press the key toenter the main menu of the BIOS Setup utility. From the main menu,you can access the other setup screens, such as the Security and Powermenus.Warning! To prevent possible boot failure, do not shutdown or reset the system while updating the BIOS.
