System Overview 1-11
Real-Time Clock/Calendar
The Y2K compliant real-time clock provides system clock/calendar information stored
in a non-volatile memory (NVRAM). The real-time clock battery provides power
backup for the real-time clock.
BIOS
A BIOS and Setup Utility are located in the Flash EPROM on the system board and
include support for system setup and PCI/ISA Plug-and-Play auto-configuration. A
number of security, reliability, and management features also have been incorporated to
meet vital server needs.
IDE Controller
IDE is a 16 bit interface for intelligent disk drives with disk controller electronics
onboard. The PCI/ISA/IDE Accelerator, also known as PIIX4e, is a multifunction
device on the server board that acts as a PCI based Fast IDE controller. The device
controls:
PIO and IDE DMA/bus master operations
Mode 4 timings
Transfer rates up to 33 MB/s
Buffering for PCI/IDE burst transfers
Master/slave IDE mode
Up to two devices per channel; two channels, IDE0 and IDE1
The IDE controller provides support for the internally mounted CD-ROM and an
optional tape device.
Network Controller
The system board includes a 10BASE-T/100BASE-TX network controller based on the
Intel 82559 single chip Fast Ethernet PCI Bus Controller. As a PCI bus master, the
controller can burst data at up to 132 MB/sec. The controller contains two receive and
transmit FIFO buffers that prevent data overruns or underruns while waiting for access
to the PCI bus. The controller has the following:
32-bit PCI bus master interface (direct drive of bus), compatible with PCI Bus
Specification, Revision 2.1
Chained memory structure with improved dynamic transmit chaining for
enhanced performance
Programmable transmit threshold for improved bus utilization
Early receive interrupt for concurrent processing of receive data
On-chip counters for network management
Summary of Contents for NEAX Express
Page 1: ...U s e r s G u i d e NEAX Express...
Page 2: ......
Page 3: ...U s e r s G u i d e NEAX Express...
Page 10: ...viii Contents...
Page 36: ...1 20 System Overview...
Page 80: ...3 30 Configuring Your System...
Page 136: ...5 22 Problem Solving...
Page 137: ...A System Cabling System Cabling Before You Begin Static Precautions Standard Configuration...
Page 142: ...A 6 System Cabling...
Page 180: ...C 20 Emergency Management Port...
Page 181: ...D Platform Event Paging...
Page 192: ...10 Glossary...
Page 198: ...Index 4...
Page 199: ...xx...
Page 200: ...456 01509 000...