Serial Interface; Usb Interface; Accelerated Graphics Port; Graphics Controller - NEC POWERMATE 2000 Service And Reference Manual

Serial Interface

The system has one 16C550 UART compatible serial port (COM1) integrated on the I/O
controller. The serial port supports the standard RS-232C interface. The buffered high-speed
serial port supports transfer rates up to 115.2 KB. The port allows the installation of high-speed
serial devices for faster data transfer rates.
The I/O addresses for the channel are given in the following table (see Section 2, "System
Configuration," for interrupt levels). Soft-selectable base addresses are 3F8h, 2F8h, 3E8h, and
2E8h.
Starting I/O Address
3F8
2F8
3E8
2E8
See Section 2, "System Configuration," for information on resetting the port through the BIOS
Setup Utility. See Section 9, "Specifications," for the serial interface specifications.
Serial interface signals are output through the system board's 9-pin, D-subconnector. The
connector is located at the back of the system unit.

USB Interface

The Universal Serial Bus (USB) ports allow Plug and Play serial devices to be added without
having to open the system. One USB device can be plugged into each USB port for direct
system connection. With a hub and the proper cabling, up to 127 USB devices can be addressed
by the system. The USB determines system resources for each peripheral and assigns them
without user intervention. Boot support for a USB keyboard is present so the system can be
booted with a USB keyboard instead of a standard keyboard.

Accelerated Graphics Port

The system board contains a direct integrated accelerated graphics port (Direct AGP) that
supports graphics-intensive, 3D applications. The Direct AGP operates independently of the PCI
bus and supports 133-MHz data transfer rates, allowing 500 MB of data to be transmitted per
second.
Attach an optional display monitor to the system board's VGA-compatible connector on the rear
panel.

Graphics Controller

The graphics controller is integrated on the Intel 82810E Graphics and Memory Controller Hub.
The hub is specifically designed for graphics-intensive operations, including 3D and 2D effects,
texture mapping, text and color pixel amplification, and video acceleration. The controller
minimizes bus traffic by off-loading the tasks normally performed by the processor, providing
64-bit, high resolution performance for demanding True Color displays and other sophisticated
graphics functions.

Serial Port I/O Addresses

Port
COM1
COM2
COM3
COM4
System Board 4-11