System I/O Controller - NEC POWERMATE VP Manual

System I/O Controller

1-40 Using Your Computer
Device drivers that do not support the dynamic board
configuration are also known as static device drivers. If
you are using a static device driver, you need to
permanently associate resources with a Plug and Play
board, instead of relying on the default Plug and Play
behavior. Otherwise, the device driver might not be able to
find the board the next time the system boots.
The system I/O controller integrates, on one chip, the con-
troller functions for the system's two serial ports, bidirec-
tional parallel port, and diskette drives.
The enhanced parallel port supports Enhanced Capabilities
Port and Enhanced Parallel Port (EPP) modes for devices
that require ECP or EPP protocols. These protocols allow
high-speed bidirectional transfer over a parallel port and
increase parallel port functionality by supporting more
devices.
The two buffered high-speed serial ports use a fast 16550
UART, which supports transfer rates up to 19.2 kilobytes
(KB) per second. These ports allow the installation of
high-speed serial devices for faster data transfer rates.