Comtrol RM ISA V.34 - Manual (Page 2)

Hardware Installation Card 2 of 7
Setting I/O Address DIP Switches
This RocketModem (and the ISA-bus RocketPort series)
use I/O address ranges at 40h (hex) intervals above the
base I/O range. If you are mixing RocketModem and
RocketPort ISA cards, you treat the cards the same for the
purpose of setting the I/O switch.
The first card requires a 68-byte I/O address range.
Subsequent cards use a 64-byte range. Most peripherals
use I/O address ranges between 0 and 3FF hex. If you have
peripherals installed above 400h, you may experience an
I/O conflict and will need to reset the DIP to an available
address for your system.
The first card installed determines the switch settings for
subsequent cards. For example, if you are installing two
cards and using the default I/O address range, you would
set the DIP switches on the cards as follows:
Port Identification
Comtrol numbers the modem ports on the
RocketModem mounting bracket as shown
in the illustration on the right. The port on
the “top” edge of the card is modem Line 1,
and the port at the “bottom” edge of the
card, nearest the bus connector, is Line 8.
A four-modem version of the RocketModem
card is also available. The four-modem
version uses the same mounting bracket
and connector block as the eight-modem
version, but ports 5 through 8 are blocked
with blank plugs.
You cannot upgrade the four-modem model
to an eight-modem model.
Troubleshooting and Running Diagnostics
The first step to troubleshooting a problem is to determine
that your RocketPort is functioning properly. To do so, you
can make a bootable diskette.
You need two files to make a bootable floppy diagnostic
diskette:
• The Rawrite utility that makes a bootable diagnostics
diskette.
• The diskette image file (*.i).
You can find both files on the Comtrol Software and
Documentation CD, or you can download them from the ftp
site.
Example DIP Switch Settings
1st RocketModem
or RocketPort
180(hex)
2nd RocketModem
or RocketPort
RocketModem or
RocketPort #1
DIP Switch Settings (I/O
Address Range)
100 – 143 hex
140 – 183 hex
180 – 1C3 hex
(Default)
200 – 243 hex
240 – 283 hex
280 – 2C3 hex
300 – 343 hex
340 – 383 hex
ON
1 2 3 4 5 6 7 8 FIRST
SECOND
ON
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
380 – 3C3 hex
1. If you are installing one RocketModem, set the DIP
switch as shown in this table.
2. If you are installing two RocketModem cards, follow
Step 1 for the first card, then set the DIP switches on
the second card to be the same as the switches on the
first card, except that switch 5 is off.
3. If you are installing three RocketModem cards,
follow Steps 1 and 2 for the first and second card,
then set the DIP switches on the third card to be the
same as the switches on the first card, except that
switch 6 is off.
4. If you are installing four RocketModem cards,
follow Steps 1 through 3 for the first, second, and
third cards, then set the DIP switches on the fourth
card to be the same as the switches on the first card,
except that switches 5 and 6 are off.
RocketModem or
RocketPort #1
DIP Switch Settings (I/O
Address Range) (Continued)
1 2 3 4 5 6 7 8
ON
Modem
1
2
3
4
5
6
7
8