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Network Controller
The system board includes a 10BASE-T/100BASE-TX network controller based on the
Intel 82559 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
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Early receive interrupt for concurrent processing of receive data
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On-chip counters for network management
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Autodetect and autoswitching for 10 or 100 Mbps network speeds
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Support for both 10 Mbps and 100 Mbps networks, capable of full or half
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duplex, with back-to-back transmit at 100 Mbps
Support for Wake On LAN.
!
SCSI Controller
The system I/O board includes an embedded Adaptec AIC7899 dual function SCSI
controller. The AIC7899 provides two Ultra 160/m SCSI interfaces as two independent
SCSI functions. As implemented on the system I/O board, channel A has one
connection to the external connector on the rear of the chassis and another connection to
the 5.25-inch devices in the removable media bays. Channel B is connected to the SCSI
backpanel that supports up to two Ultra 160/m SCA drives unless the optional RAID
controller is installed.
Video Controller
The system has an integrated ATI Rage IIC 64 bit high-performance SVGA subsystem
that supports the following:
BIOS compatibility with VGA, EGA, CGA, Hercules Graphics, and MDA
!
4 MB of 10 ns onboard Synchronous Graphics Memory (SGRAM)
!
Pixel resolutions up to 1280 X 1024
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Analog VGA monitors (single and multiple frequency, interlaced and
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noninterlaced) with a maximum vertical retrace noninterlaced frequency of
100 Hz.
System Overview 1-21
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Table of Contents
Troubleshooting
