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4-10 System Board
Components
The system board has the following features:
Intel 82443ZX AGPset used for AGP, PCI/ISA, memory, and peripheral
control
Winbond
®
W83977TF I/O controller (integrates standard PC I/O
functions: two serial ports, one EPP/ECP-capable parallel port, floppy
disk interface, real time clock, keyboard and mouse controller, and
support for two USB ports)
two dual in-line memory module (DIMM) sockets with support for up to
256 MB of SDRAM using DIMMs
American Megatrends Inc. (AMI) BIOS in a flash memory device
supporting system setup and PCI auto-configuration
32-KB internal dual write-back cache integrated on the processor
pipelined 32-bit addressing
64-bit data
32 MB to 256 MB of SDRAM upgradeable with 32-MB, 64-MB, or
128-MB increments through DIMM sockets on the system board
512-KB (128 KB for Celeron processor) write-back secondary cache
memory on processor
System Setup utility built into the BIOS
2-Mb Flash ROM for fast economical BIOS upgrades
PCI local bus for fast data transfer
integrated sound (Creative
®
ES1371/ES1373 audio system)
power management with power saving mode, featuring inactivity timer
external connectors for connecting the following external devices:
VGA-compatible monitor (standard, super, high-resolution VGA) to
AGP port on graphics board
personal system/2 (PS/2
®
)-style mouse
PS/2-style keyboard
bi-directional Enhanced Parallel Port (EPP) and Enhanced
Capabilities Port (ECP) support for a parallel printer
serial devices through two buffered 16C550 UART serial ports,
supporting up to 115.2 KB per second
two USB devices
speaker and microphone connectors (line in, line out, microphone in).