Advantech 4-Port RS-232 Interface card PCL-849 - Manual (Page 13)

1 4 PCL-849 User's Manual
Card Configuration
Each port on the PCL-849 card has a jumper and a DIP switch which
require configuring prior to use. The DIP switch sets the port to the
appropriate I/O address and speed mode. The jumpers set the port's
IRQ.
Default Settings
The board is shipped with default settings. If you need to change
these settings, however, see the following sections. Otherwise, you
can simply install the card. Note that you will need to disable your
CPU card's on-board COM ports, if any, or set them to alternate
addresses / IRQs.
PCL-849 Default Configuration
Setting Default function
JPI IRQ 12
Speed mode 1x
IRQ mode Share
Base address Address 300H
Vector address Interrupt 280H
Address mode Enhance
I/O Address and Interrupt Setup
Next, you will need to select an IRQ (interrupt request) number, and
an I/O base address for the PCL-849.
Model Setup (base address setting)
The card base address is affected by the setting of the Mode 1 switch.
Standard mode or enhanced mode is selected as shown.