NEC Express5800/120Mc2 series, User Manual

Page: 29 / 172

System Overview 1-15
Peripheral Controller
The advanced integrated peripheral controller supports two serial ports, two universal
serial bus 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
COM ports and can be enabled separately. When enabled, each port can be
programmed to generate edge or level sensitive interrupts. 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.