Memory; System Chipsets - Silicon Graphics 230 User Manual

3: System Board

Memory

System Chipsets

VIA Apollo Pro 133A Chipset
LAN Subsystem
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previous Pentium processor while maintaining binary compatibility with all previous
Intel architecture processors.
The three DIMM sockets on the board allow a maximum of 1.5 GB of memory using three
512-MB SDRAM (Synchronous DRAM) DIMMs. For data integrity, the default setting of
the ECC (Error-Correcting Code) function of the memory system in the BIOS is enabled.
Note: Only 3.3 volts SDRAM should be used; 5-volt memory devices are not supported.
The VIA Apollo Pro 133A chipset was specifically designed to meet the needs of high
performance systems. It consists of two components: VT82C694X (north bridge) and
VT82C686A (south bridge).
• VT82C694X (north bridge) provides the host interface, memory system control
interface, PCI interface, and AGP interface to boost graphics performance.
• VT82C686A (south bridge) integrates super I/O functions like keyboard and mouse
interface, floppy disk controller, advance digital data separator, two compatible
serial ports (UARTs), one parallel port, on-chip 12 mA AT bus drivers, one floppy
direct drive support, and Intelligent Power Management support. It also supports
the PC99 compliant PCI-to-ISA bridge, SoundBlaster/DirectSound AC97 audio,
SMBus and others.
Another cost-effective feature for network solution is the integration of Intel's 82559
10/100 Mbps Fast Ethernet controller which supports Advanced Configuration and
Power Interface (ACPI) 1.20A based power management, Wired for Management (WfM)
2.0 compliance, IP checksum assist, PCI 2.2 compliance, and PC 99 compliance.
007-4263-001