Extensible Firmware Interface Specification
366 12/12/00 Version 1.02
Intel Itanium Architecture
A new Intel architecture that has 64-bit instruction capabilities, new performance-
enhancing features, and support for the IA-32 instruction set. This architecture is
described in the IA-64 Architecture Software Developer’s Manual.
Intel Architecture Platform Architecture
A collective term for PC-AT-class computers and other systems based on Intel
Architecture processors of all families.
Legacy Platform
A platform which, in the interests of providing backward-compatibility, retains obsolete
technology.
LFN
See Long File Names.
Little Endian
A memory architecture in which the low-order byte of a multibyte datum is at the lowest
address, while the high-order byte is at the highest address. See Big Endian.
Load File Protocol
A protocol that is used during boot services to find and load other modules of code.
Loaded Image
A file containing executable code. When started, a loaded image is given its image
handle and can use it to obtain relevant image data.
Loaded Image Protocol
A protocol that is used during boot services to obtain information about a loaded image.
Also called the EFI Loaded Image Protocol.
Long File Names (LFN)
Refers to an extension to the FAT File System that allows file names to be longer than
the original standard (eight characters plus a three-character extension).
Machine Check Abort (MCA)
The system management and error correction facilities built into the Intel Itanium
processors.
Master Boot Record (MBR)
The data structure that resides on the first sector of a hard disk and defines the partitions
on the disk.
MBR
See Master Boot Record.