Operations Manual
PCCOM PCI 8 port universal RS232 card
DECISION Computer International
1
CHAPTER 1
INTRODUCTION
The PCCOM PCI bus 8 port universal RS232 adapter is an 32 bits
PCI bus board with Plug and Play (PnP) features, it provides eight
asynchronous RS232 serial communication ports, which link the
computer and serial peripheral devices such as terminals, modems,
serial printers, plotters, ... etc.
The PCCOM PCI bus 8 port universal RS232 adapter is particularly
suited to facilitate the connection of terminals (VDUs) in multi-user
operating systems. The PCCOM board may be installed in any
Pentium or hardware compatible systems. The PnP features let
hardware configuration for IRQ and I/O address is detected by
BIOS automatically, you don’t need set switch and jumper.
Since most of the computer has its own COM1 and COM2, the
PCCOM PCI bus 8 port universal RS232 adapter can be configured
from COM3.
On board XR16C854 chip provides four 16850 functions which
contains 128 bytes FIFO buffer for each 16850 ports. There are two
kinds of board can be choose, one is dual speed (clock rate is
7.3728MHZ) board that its baud rate up to 230K, another is octal
speed board (clock rate is 14.7456 MHZ) that its baud rate up to
1M.
The features of the PCCOM PCI bus 4 port universal RS232
adapter are:
•
32 bit PCI bus with Plug and Play (PnP) features.
•
Eight RS232 ports for asynchronous communications.
