NAME¶
rp
—
driver for Comtrol RocketPort Intelligent Serial Port
Cards
SYNOPSIS¶
device rp
For ISA cards, you must specify the port address in
/boot/device.hints:
hint.rp.0.at="isa"
hint.rp.0.port="0x100"
DESCRIPTION¶
This driver provides a kernel device driver for the RocketPort and RocketPort RA
serial boards. 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 RocketPort or
RocketPort RA boards in one machine simultaneously. If you are using four 32
port RocketPort boards, you can put as many as 128 intelligent serial ports on
your system.
The
rp
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
termios(4), rather than the old style ioctl
interface to use non-traditional speeds.)
An open on the
rp
driver will block until
carrier is present, unless
O_NONBLOCK
or
CLOCAL
is set.
HARDWARE CONFIGURATION¶
The first RocketPort or RocketPort RA 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, 0x380h. The second, third, and fourth
RocketPort 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 RocketPort cards must not conflict with any other cards in the system,
including other RocketPort cards. The starting range of the I/O ports used by
each card must match with the I/O address specified in
/boot/device.hints.
Since the first RocketPort 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 RocketPort 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
/boot/device.hints:
hint.rp.0.at="isa"
hint.rp.0.port="0x100"
hint.rp.1.at="isa"
hint.rp.1.port="0x180"
The configuration of the RocketPort cards is done via the set of 8 DIP switches,
labeled SW1 on the RocketPort card:
+-------------------------------+
| 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 RocketPort card. 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:
DIP Switches
6 5
===================
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 first
RocketPort card. If there are more than one RocketPort cards installed in a
system, the second, third and fourth RocketPort cards must also be set to the
I/O address range used by the first RocketPort card; 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
FILES¶
- /dev/ttyR[0-4][0-9a-f]
-
AUTHORS¶
Theodore Ts'o ⟨tytso@mit.edu⟩
This driver was written under contract for Comtrol Corporation. For dealer,
distributor and other information regarding Comtrol RocketPort, contact
Comtrol Corporation at (800) 926-6876 or send email to
⟨info@comtrol.com⟩. To report bugs for this driver, please send
email to ⟨bug-bsdi-rocketport@comtrol.com⟩.
BUGS¶
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
rp
driver
or in the
BSD/OS tty layer.