CHAPTER 1
INTRODUCTION
The PCCOM ISA bus 8 port adapter provides eight asynchronous serial communication ports (RS232 or RS422), which link the computer and serial peripheral devices such as terminals, modems, serial printers, plotters, ... etc.
The PCCOM ISA bus 8 port adapter is particularly suited to facilitate the connection of terminals (VDUs) in multi-user operating systems. Each board is supplied complete with many kinds of connectors.
The PCCOM ISA bus board may be installed in any PC/486, Pentium or hardware compatible systems. To accommodate a variety of operating systems, three switch banks permit maximum flexibility of configuration. You may select which interrupt (IRQ3 – IRQ15), I/O address, and interrupt vector you desire.
The PCCOM ISA bus 8 port board can be used to plug in 8250, 16450, 16550, or 16650 chips, and the PCCOM device driver can detect it automatically. There are two kinds of board can be choose, one is normal speed card that its baud rate up to 115200, another is high speed card that its baud rate up to 460K.
The features of the PCCOM ISA bus 8 port adapter are:
Eight RS232 ports for asynchronous communications.




Suitable for XENIX/UNIX (SCO, AT&T, Interactive, UNIXWARE), MS/DOS, MS/WINDOWS, WINDOWS/NT, WINDOWS/95, OS/2, WINDOWS/98, WINDOWS/2000, PICK, CONCURRENT DOS, QNX, PROLOGUE, MUMPS, ... etc.
PC/486, Pentium hardware compatibles.
Interrupt selectable. (IRQ3 - IRQ15)
Interrupt vector address selectable.
ARNET 8 multi-port card compatible.
I/O address selectable.
Auto-detect 16450 or 16550 or 16650 chips on board.


Baud rate up to 115200 for normal speed board and up to 460K for high speed�� board.