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Peripheral Controller
The advanced integrated peripheral controller supports two serial ports, two 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, for a SVGA monitor, 2 serial port connectors, a parallel port connector, LAN
port, and two USB connections. Serial port COM1 may be accessed from the front or
rear panel of your server.
System Board Management Controller (BMC)
Server management is concentrated in the System Board Management Controller
(BMC). The BMC and associated circuitry are powered from a 5Vdc standby voltage,
which remains active when system power is switched off, but the ac power source is
still on and connected.
The BMC supports the Management Workstation Application (MWA), which allows
remote server management via a modem or direct connection to a manager system.
Events monitored by the manager system include over-temperature and over-voltage
conditions, fan failure, or chassis intrusion.
Information on MWA may be found on the ExpressBuilder CDROM included with
your server.
One major function of the BMC is to autonomously monitor system management
events, and log their occurrence in the nonvolatile System Event Log (SEL). The events
being monitored include overtemperature and overvoltage conditions, fan failure, or
chassis intrusion. To enable accurate monitoring, the BMC maintains the nonvolatile
Sensor Data Record (SDR), from which sensor information can be retrieved. The BMC
provides an ISA host interface to SDR sensor information, so that software running on
the server can poll and retrieve the server's current status.
System Overview 1-11
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Troubleshooting
