The PCCOM PCI bus 2 port RS422/RS485 with isolator is an
bits PCI bus
board with Plug and Play (PnP) features, it provides two asynchronous serial
communication ports (RS232), which link the computer and
peripheral devices such as terminals, modems, serial printers, plotters,
... etc. The on
board isolator can isolate voltage
to 2500V r.m.s.
The PCCOM PCI bus 2 port adapter is particularly suited
facilitate the connection of terminals (VDUs) in multi-user operating
The PCCOM board may be installed in any Pentium or hardware compatible
The PnP features let hardware configuration for IRQ and I/O address is
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 2 port
adapter can be
configured from COM4.
On board 16650 chip provides two 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.