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BIOS (Basic Input Output System)

BIOS (Basic Input Output System). Software program burnt into ROM chips Operating system communicates with BIOS Contains computer settings Hard drives, RAM speeds, boot order, etc. BIOS Components. Motherboard BIOS Adapter Card BIOS Drivers loaded from disk (non component) CMOS.

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BIOS (Basic Input Output System)

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  1. BIOS (Basic Input Output System) • Software program burnt into ROM chips • Operating system communicates with BIOS • Contains computer settings • Hard drives, RAM speeds, boot order, etc

  2. BIOS Components • Motherboard BIOS • Adapter Card BIOS • Drivers loaded from disk • (non component) CMOS

  3. Types of ROM Chips • ROM (Read Only Memory) • PROM (Programmable ROM) • EPROM (Erasable PROM) • EEPROM (Electrically EEPROM/Flash ROM)

  4. Major Manufacturers • AMI • Customizes ROM for OEMs • Award • Sells source code to OEMs so they can customize • Phoenix • Considered to be industry leader

  5. BIOS Configuration • Enter by pressing key combination during boot process • Esc, Del, Cntrl-Alt-Esc, etc • Some are menu driven, some have GUI w/ mouse driver

  6. BIOS Configuration • Hard disk settings • Can use “User Defined” and manually enter in configuration information • “Autodetect” feature will read drives configuration and automatically enter • Advanced settings • Virus detection • Password • Cache settings

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