1-18 Chapter 1: Product Overview
MSR
The MSR interface supports a maximum of 3 tracks of magnetic stripe
information for support of ISO or JIS format cards. Activate the MSR
interface by enabling it in BIOS Setup under IO Configuration. The
MSR interface controller is a memory-mapped device, which can reside
at system memory addresses CA000, CC000, or D0000. If MSR
capability is not desired, it may be disabled through BIOS Setup.
Board BIOS
The Processor Board uses a Phoenix BIOS, which is stored in Flash
ROM and easily upgraded through the network connection or serial
port. The Flash EEPROM also contains the Setup utility, Power-On Self
Tests (POST), and APM 1.2. The board also supports system BIOS
shadowing, which enables the BIOS to execute from onboard write-
protected DRAM.
The BIOS displays a sign-on message during POST identifying the type
of BIOS and a five-digit revision code.
FLASH memory Implementation
The Intel E28F800B5-T70 Flash component is organized onboard as
1024 K x 8 (1 MB). While a typical PC BIOS image including video and
LAN boot ROM code normally fits in 256 K on the Pentium Board and
512 K in the Pentium III/Celeron board, the boards support a 1 MB
flash ROM. The current Phoenix BIOS release only requires 256 K of
this 1 MB total. The Flash device contains the PC System BIOS along
with the Video BIOS and LAN boot ROM which compresses the ROM
images into a single binary image.
The Flash device is divided into four areas, as described below.
System Address FLASH Memory Area
F0000H FFFFFH 64 K Main BIOS
EE000H EFFFFH 8 K System BIOS Reserved during boot
ED000H EDFFFH 4 K Plug and Play ESCD Storage Area
E0000H ECFFFH 52 K System/VGA BIOS Reserved during boot
