Peripheral Controller; Serial Ports; Parallel Port; External Device Connectors - NEC Express5800 User Manual

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Pixel resolutions up to 1280 X 1024
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Analog VGA monitors (single and multiple frequency, interlaced and non-
interlaced) with a maximum vertical retrace non-interlaced frequency of
100 Hz.

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 bi-directional 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.

ACPI

The Advanced Configuration and Power Interface (ACPI) aware operating system can
place the system into a state where the hard drives spin down, the system fans stop, and
all processing is halted. However, in this state the power supply is still on and the
processors are still dissipating some power such that the power supply fan and
processor fans are still running.
Note: ACPI requires an operating system that supports its
feature.
This server system BIOS supports sleep states s0, s1, s4, and s5. However, with future
versions of Microsoft Windows 9X that support ACPI, the system BIOS only supports
sleep states s0, s1, and s5. With future versions of Microsoft Windows NT that support
ACPI, the system BIOS will only support sleep states s0, s1, s4, and s5.
1-10 System Overview