Protech Systems PA-8225, User Manual, Page: 156 / 247

Chapter 3 Software
PA-8225 SERIES USER
’
S MANUAL
Page: 3-93
3-4. BIOS Operation
3-4-1. Introduction
The board PA-8225 uses an AMI Aptio BIOS that is stored in the Serial Peripheral
Interface Flash Memory (SPI Flash) and can be updated. The SPI Flash contains the
BIOS Setup program, Power-on Self-Test (POST), the PCI auto-configuration utility,
LAN EEPROM information, and Plug and Play support.
Aptio is AMI’s BIOS firmware based on the UEFI (Unified Extensible Firmware
Interface) Specifications and the Intel Platform Innovation Framework for EFI. The
UEFI specification defines an interface between an operating system and platform
firmware. The interface consists of data tables that contain platform-related
information, boot service calls, and runtime service calls that are available to the
operating system and its loader. These provide standard environment for booting an
operating system and running pre-boot applications. Following illustration shows
Extensible Firmware Interface’s position in the software stack.