User`s guide

13
Chapter 2
2. System Processor Board Description
Processor Board Features
Table 2-1 lists the major features of the server system’s processor board (also called the
baseboard).
Table 2-1 Processor Board Features
Feature Description
Processor Installed:Up tofour PentiumIIIXeon processors, packaged insingleedge contact
(S.E.C.) cartridges and installed in 330-pin Slot 2 processor connectors, operating
at 1.8 V to 3.5 V. The processor board's voltage regulator is automatically
programmed by the processor's VID pins to provide the required voltage.
Includes connectors for six VRM 8.3-compliant plug-in voltage-regulator
modules.
Memory,dynamicrandom
access (DRAM)
Single plug-in module containing 64/72-bit four-way-interleaved pathway to
main memory supporting EDO DRAM.
Installed: 256 MB to 4 GB of error correcting code (ECC) memory.
Video memory (DRAM) Installed: 2 MB of video memory.
PCI Segment A bus
PCI Segment B bus
PCI-A—Three expansion connectors and four embedded devices:
Programmable interrupt device (PID)
PCI/ISA/IDE Accelerator (PIIX4E) for PCI-to-ISA bridge, PCI IDE interface, and
Universal Serial Bus (USB) controller
PCI video controller (Cirrus Logic GD5480)
PCI narrow SCSI controller (Symbios SYM53C810AE)
PCI-B—Four expansion connectors (one physically shared with the ISA slot) and
one embedded device:
Wide Ultra/Ultra II SCSI controller (Symbios SYM53C896)
ISA bus One expansion slot for add-in boards (shared with a PCI-B slot). Embedded
PC-compatible support (serial, parallel, mouse, keyboard, diskette).