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SE7500CW2 Server Board Technical Product Specification
6.
System BIOS
The SE7500CW2 server board contains the following on-board Application Specific Integrated
Circuits (ASICs) that require BIOS support:
•
Intel E7500 MCH North Bridge with Memory Controller
•
Intel ICH3 Source Bridge integrate USB controller, IDE controller, SMBUS controller, LPC
Bridge, and RTC
•
P64H2 PCI bridge support PCI bridging and PCI hot plug
•
1MB FWH provide the BIOS code storage
•
Windbond* W83627F Super I/O integrate Serial Port/Parallel port/PS2 KB/mouse/Floppy
and H/W Monitor functionality
•
Dual Channel Promise PDC20267 ATA-100 with RAID 0, 1 & 1+0 support
•
ATI Rage XL with 8MB SDRAM support
6.1.1
System Flash ROM Layout
The flash ROM contains system initialization routines, the BIOS Setup Utility, and runtime
support routines. The exact layout is subject to change, as determined by Intel. The flash ROM
also contains initialization code in compressed form for on-board peripherals, like ATA-100
RAID, PXE ROM and video controllers.
The complete ROM is visible, starting at physical address 4 GB minus the size of the flash ROM
device. Only BIOS needs to know the exact map. The BIOS image contains all of the BIOS
components at appropriate locations. The Flash Memory Update utility loads the BIOS image
minus the recovery block to the flash.
Because of shadowing, none of the flash blocks is visible at the aliased addresses below 1 MB.
A 64KB block is dedicated for boot block code which is to provide the ROM disaster recovery
when the System ROM is destroyed by some unexpected reasons, like power failure while
update the BIOS.
A 8 KB parameter block in the flash ROM is dedicated to storing configuration data that controls
the system configuration (ESCD). Application software must use standard APIs to access these
areas; application software cannot access the data directly.
6.2
System Configuration and Initialization
6.2.1
Memory
The following is a list of memory specifications that the system BIOS supports:
•
Only registered DDR200 or DDR266 memory is supported. When populated with more
than 4 GB of memory, the memory between 4 GB and 4 GB minus min. 128 MB is not
accessible for use by the OS and may be lost to the user. This area is reserved for BIOS,
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Revision 1.40
System BIOS
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