NEC MT-2550-24874C, Руководство по обслуживанию

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1-6 Technical Information
Table 1-2 System Board Feature Components
Chip Function
Pentium II Chip 233/66-MHz or 266/66-MHz Intel Pentium II
processor
82440FX Chipset:
82371SB PCI/ISA IDE
Xccelerator (PIIX3)
82441FX PCI Bridge and
Memory Controller (PMC)
82442FX Data Bus Accelerator
(DBX)
Provides interface between PCI and ISA bus;
supports up to four PCI/IDE devices;
mode 3 and mode 4 support; Logical block
addressing (LBA) and Extended Cylinder
Head Sector (ECHS) translation modes and
ATAPI devices on both IDE interfaces
Provides CPU interface control and integrated
DRAM control; supports a fully synchronous
PCI bus interface plus CPU-to-DRAM and
PCI-to-DRAM data buffering
Connects to the CPU data bus, memory data
bus, and PMC private data bus; works in
parallel with PMC to provide a high
performance memory subsystem for
Pentium II-based systems
PC87307 I/O Controller Multifunction I/O device:
•
Multimode parallel port
-- Centronics-compatible (standard mode)
-- Enhanced capabilities port (ECP)
-- Enhanced parallel port (EPP)
•
Two RS-232C serial ports that support an
IrDA and Consumer IR compliant Infrared
interface
•
Integrated real-time clock with Century
calendar functionality and 242-byte
battery-backed CMOS RAM
•
Integrated 8042A keyboard controller
•
Flexible IRQ and DMA mapping; interfaces
are automatically configured during boot
up; the I/O controller can also be manually
configured in the Setup program
•
Supports industry-standard floppy
controller