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System Board 4-11
The following table lists the major components on the system board.
System Board Components
Component Function
Processor (mounted in a S.E.C.
cartridge)
Celeron
300-, 333-, 366-, 400-, or 433-MHz processor
Pentium II
350-, 400-, or 450-MHz processor
Pentium III
450- or 500-MHz processor
Intel 82440ZX AGPSet:
82443ZX AGP Host Bridge
Controller (PAC)
Provides bus control signals, address paths, and data paths for
transfers between the processor’s host bus, PCI bus, AGP
connector, and system memory. The PAC comes in a 492-pin
BGA package on the system board.
Features include processor interface control (32-bit addressing,
optimized for 100-MHz host bus frequency, supports 66 MHz
bus frequency), an integrated DRAM controller (synchronous
DRAM, 64/72-bit path-to-memory, auto detection of memory
type) and an AGP interface (compliant with AGP specification
with data transfer rates up to 133 MHz), fully synchronous
minimum latency PCI bus interface (compliant with PCI
specification with PCI-to-DRAM access greater than 100 MB
per second).
82371EB PCI ISA/IDE Xcelerator
(PIIX4)
Functions as a PCI to ISA bridge; PCI IDE functionality; a USB
controller; integrated dual channel enhanced IDE interface with
support for Ultra DMA/33; enhanced DMA controller; interrupt
controller based on 82C59, with support for 15 interrupts; power
management logic (sleep/resume and remote wake on LAN);
real-time clock with 256-byte, battery-backed CMOS static RAM
(SRAM); and 16-bit counters based on 82C54. The chip comes
in a 324-pin BGA package on the system board.
Winbond Multi Super I/O W83977TF
controller
The controller provides the following features:
Multimode parallel port
Centronics compatible (standard mode)
Enhanced capabilities port (ECP)
Enhanced parallel port (EPP)
Two RS-232C serial ports
Integrated 8042A keyboard controller
Supports industry-standard floppy controller
Creative
®
ES1371/ES1373 PCI chip Provides audio on system board.