2 PCM-3680 Startup Manual
Card Configuration
The PCM-3680 has two ports, each with one jumper.
The jumpers set the IRQ for the ports, which can be
configured separately. A DIP switch sets the memory
base address for each port. The following chart shows
the function of the jumper and the switch (see the previ-
ous page for jumper and switch locations).
Default Settings
• Port 1 is set for COM1 (IRQ=12, Memory address =
DA00:0000).
• Port 2 is set for COM2 (IRQ=15, Memory address =
DA00:0200).
If you need to change these settings, 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.
Jumpers and Switches
Jumpers JP1 and JP2 set the interrupts for Port 1 and
Port 2, respectively. You can choose any IRQ from 3 to
15, except 8, 13 and 14. When you choose IRQs, make
sure they are not used for other cards in the system. The
following figures show the card's default settings.
Memory Base Address (SW1)
The memory base address for the PCM-3680, which
requires 4 KB of address space, is made up of the mem-
ory segment and its associated offset. The address for
the memory segment is set through SW1, a six-position
DIP switch. You can choose any base address from
C800 to EF00. The following table shows the DIP
switch settings and the corresponding base addresses.
Memory Area
Once the memory segment for the base address is
selected, the offset will be automatically assigned for
Port 1, Port 2, and hardware reset. The following table
shows the base addresses of the CAN controllers.
Installation
Switch and Jumper Functions
IRQ Setup
JP1
Port 1
JP2
Port 2
Memory base address
SW1
Port 1, Port 2
Memory Address Configuration (SW1)
Address/
DIP Switch
A12 A13
A14
A15 A16
A17
C800H
on
on
on
off
on
on
C900H
off
on
on
off
on
on
CA00H
on
off
on
off
on
on
CB00H
off
off
on
off
on
on
CC00H
on
on
off
off
on
on
CD00H
off
on
off
off
on
on
CE00H
on
off
off
off
on
on
CF00H
off
off
off
off
on
on
D000H
on
on
on
on
off
on
D100H
off
on
on
on
off
on
D200H
on
off
on
on
off
on
D300H
off
off
on
on
off
on
D400H
on
on
off
on
off
on
D500H
off
on
off
on
off
on
D600H
on
off
off
on
off
on
D700H
off
off
off
on
off
on
D800H
on
on
on
off
off
on
D900H
off
on
on
off
off
on
DA00H
on
off
on
off
off
on
DB00H
off
off
on
off
off
on
DC00H
on
on
off
off
off
on
DD00H
off
on
off
off
off
on
DE00H
on
off
off
off
off
on
DF00H
off
off
off
off
off
on
E000H
on
on
on
on
on
off
E100H
off
on
on
on
on
off
E200H
on
off
on
on
on
off
E300H
off
off
on
on
on
off
E400H
on
on
off
on
on
off
E500H
off
on
off
on
on
off
E600H
on
off
off
on
on
off
E700H
off
off
off
on
on
off
E800H
on
on
on
off
on
off
E900H
off
on
on
off
on
off
EA00H
on
off
on
off
on
off
EB00H
off
off
on
off
on
off
EC00H
on
on
off
off
on
off
ED00H
off
on
off
off
on
off
EE00H
on
off
off
off
on
off
EF00H
off
off
off
off
on
off
Base address (hex)
CAN Controller
base:0000h - base:00FFh
Basic- Port 1
base:0100h - base:01FFh
HW reset Basic - Port 1
base:0200h - base:02FFh
Basic- Port 2
base:0300h - base:03FFh
HW reset Basic - Port 2
base:0400h - base:0FFFh
Not used
