The PCCOM PCI bus 8 port adapter is an 32 bits PCI bus
board with Plug and Play (PnP) features, it provides eight asynchronous serial communicationports (RS232 or
RS422/RS485), which link the computer and
serial peripheral devicessuch as terminals,
modems, serial printers, plotters, ... etc.
PCCOM PCI bus 8 port 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
most of the computer has its own COM1 and COM2, the PCCOM PCI bus 8
port adapter can be configured from COM4.
board ST16C554 chip provides four 16550 functions which contains 16
bytes FIFO buffer
for each 16550 ports. There are two kinds of mode can be choose,
one is normal speed mode that its baud rate up to 115200, another
is high speed mode that its baud rate up to 460K.