Manual Reference Pages - RP (4)
- driver for Comtrol RocketPort Intelligent Serial Port Cards
.Cd device rp
For ISA cards, you must specify the port address in
.Cd hint.rp.0.at= isa
.Cd hint.rp.0.port= 0x100
This driver provides a kernel device driver for the
These boards provide 8, 16, or 32 high-speed serial ports
while requiring only 68 bytes of I/O space for all 8, 16,
or 32 ports, and do not require an interrupt channel.
This driver supports up to four
boards in one machine simultaneously.
If you are using four 32 port
boards, you can put as many as 128 intelligent serial ports
on your system.
driver supports the following speeds: 50, 75, 110, 134, 150,
200, 300, 600, 1200, 1800, 2400, 4800, 9600, 19200, 38400, 7200,
14400, 57600, 76800, 115200, and 230400.
(You must use
rather than the old style ioctl interface to use non-traditional
An open on the
driver will block until carrier is present, unless
card requires a 68-byte contiguous block of I/O addresses,
starting at one of the following:
0x100h, 0x140h, 0x180h, 0x200h, 0x240h, 0x280h, 0x300h, 0x340h,
The second, third, and fourth
cards require only a
64-byte contiguous block of I/O addresses, starting at one of the
above address ranges.
The I/O address range used by any of the
cards must not conflict with any other cards in the system,
The starting range of the I/O ports used by each card
must match with the I/O address specified in
Since the first
uses 68 I/O addresses, if the first card is
set to use an I/O block starting at 0x100,
it will occupy the I/O ports between 0x100 and 0x143.
This means that the second, third, or fourth
board may not use the block of addresses starting at 0x140,
since the first three I/O addresses of that range
are used by the first board.
This is an important point to keep in mind.
If you have two ISA cards, one installed at 0x100 and the
second installed at 0x180, then you should add the following to
The configuration of the
cards is done via the set of 8 DIP switches,
labeled SW1 on the
| 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
| Unused| Card | I/O Port Block|
DIP switches 7 and 8 are unused, and must be left on.
DIP switches 6 and 5 identify the card number of each
The first card installed in the system must have its DIP switches set
as card number one; the second card installed in the system must have
its DIP switches set as card number two; and so on.
As shipped from
the factory, DIP switches 6 and 5 are both on by default, indicating
that this is the first card installed on the system:
On On First Card
On Off Second Card
Off On Third Card
Off Off Fourth Card
DIP switches 4, 3, 2, and 1 indicate the I/O address range used by the
If there are more than one
cards installed in a system,
the second, third and fourth
also be set to the I/O address range used by the first
all cards must have these DIP switches set identically
for proper operation.
As shipped from the factory, DIP switch 4 is on,
and switches 3, 2, and 1 are off by default,
indicating an I/O address range used by the first
card which starts at 0x180 and extends to 0x1C3.
DIP Switches I/O Address Range
4 3 2 1 Used by the First Card
On Off On Off 100-143
On Off Off On 140-183
On Off Off Off 180-1C3
Off On On Off 200-243
Off On Off On 240-283
Off On Off Off 280-2C3
Off Off On Off 300-343
Off Off Off On 340-383
Off Off Off Off 380-3C3
.An Theodore Tso Aq firstname.lastname@example.org
This driver was written under contract for Comtrol Corporation.
For dealer, distributor and other information regarding Comtrol
contact Comtrol Corporation at (800) 926-6876 or send email to
To report bugs for this driver, please send email to
If incoming software flow control is enabled on a 486 or Pentium
machine, and the flow control is very heavily exercised, on rare occasions
a character will get dropped.
This problem does not occur on a 386, and
it is not currently known whether the bug is in the
or in the
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