Chapter 1: Introduction 1-2 Chipset Overview The ServerWorks ServerSet TM III HE Classic is a high-performance core logic chipset that consists of a North Bridge and a South Bridge. Introduction The North Bridge includes an integrated main memory subsystem and a dual channel PCI bus that bridges the processor bus to a 64-bit PCI bus and a 32-bit PCI bus. The North Bridge also packs and unpacks data for PCI accesses, which reserves more processor bandwidth for multiprocessor motherboards.
The South Bridge provides various integrated functions, including the PCI to ISA bridge and support for UDMA33, security (passwords and system pro- tection), Plug & Play, USBs, power management, interrupt controllers and the SMBus. The North and South Bridges communicate over a serial bus that uses the PCI clock as a timing reference. This serial bus uses a single pin on both bridges to send a 4-bit word for transmitting commands back and forth. 1-3 Special Features Alert on LAN 2 (optional) AOL2 ASIC brings an advanced level of management interface between a remote management console/server and the client system.
It provides inter- faces to the 82559 Ethernet controller chip and to system monitoring de- vices. AOL2 can send "Alert" messages to the mangagement console to notify administrators of important events or problems such as high tempera- tures, chassis intrusion and voltages exceeding safe margins. Recovery from AC Power Loss BIOS provides a setting for you to determine how the system will respond when AC power is lost and then restored to the system. You can choose for the system to remain powered off (in which case you must hit the power switch to turn it back on) or for it to automatically return to a power on state.
See the Power Lost Control setting in BIOS on page 4-11 of this manual to change this setting. The default setting is Always OFF. 1-13