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SCSI Controller
The system board includes an embedded Adaptec AIC7899W dual function SCSI
controller. The AIC7899W provides Ultra-160 SCSI interfaces as two independent PCI
functions. As implemented on the system board, interface A attaches to an Ultra-160
SCSI backplane that supports up to ten Ultra-160 SCA drives in redundant
configuration. Controller B may be used to support SCSI devices in the removable
media bays or external to the cabinet.
Video Controller
The system has an integrated ATI Rage XL 64 bit high-performance VGA 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
!
Analog VGA monitors (single and multiple frequency, interlaced and
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noninterlaced) with a maximum vertical retrace noninterlaced frequency of
100 Hz.
Peripheral Controller
The super I/O (PC87417) advanced integrated peripheral controller supports two serial
ports (one on rear I/O panel and one 10 pin header connector on the system board), four
universal serial ports, one parallel port, diskette drive, PS/2-compatible keyboard and
mouse, and integrated Real Time Clock (RTC). The system provides the connector
interface for each port.
Serial Ports
Both serial ports are relocatable. Each serial port can be set to one of four different
addresses and can be enabled separately. When disabled, serial port interrupts are
available to add-in boards.
Parallel Port
One IEEE 1284-compatible 25-pin bidirectional EPP (supporting levels 1.7 and 1.9)
parallel port is provided. BIOS programming enables the parallel port and determines
the port address and interrupt. ECP mode is supported with 2 possible DMA channels.
When disabled, the interrupt is available to add-in boards.
External Device Connectors
The external I/O connectors provide support for a PS/2 compatible mouse and a
keyboard, VGA monitor, two serial port connectors, a parallel port connector, two LAN
ports, and four USB connections (three on rear I/O panel and one on front panel) for
devices other than keyboard or mouse.
System Overview 1-13
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Troubleshooting
