196 lines
5.4 KiB
Groff
196 lines
5.4 KiB
Groff
.\" Copyright (c) 1995 Comtrol, Inc.
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.\" All rights reserved.
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.\"
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.\" $FreeBSD$
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.Dd November 15, 1995
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.Os
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.Dt RP 4
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.Sh NAME
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.Nm rp
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.Nd "driver for Comtrol RocketPort Intelligent Serial Port Cards"
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.Sh SYNOPSIS
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.Cd "device rp"
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.Pp
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For ISA cards, you must specify the port address in
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.Pa /boot/device.hints :
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.Cd hint.rp.0.at="isa"
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.Cd hint.rp.0.port="0x100"
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.Sh DESCRIPTION
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This driver provides a kernel device driver for the
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.Tn RocketPort
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and
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.Tn RocketPort RA
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serial boards.
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These boards provide 8, 16, or 32 high-speed serial ports
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while requiring only 68 bytes of I/O space for all 8, 16,
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or 32 ports, and do not require an interrupt channel.
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This driver supports up to four
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.Tn RocketPort
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or
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.Tn RocketPort RA
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boards in one machine simultaneously.
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If you are using four 32 port
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.Tn RocketPort
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boards, you can put as many as 128 intelligent serial ports
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on your system.
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.Pp
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The
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.Nm
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driver supports the following speeds: 50, 75, 110, 134, 150,
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200, 300, 600, 1200, 1800, 2400, 4800, 9600, 19200, 38400, 7200,
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14400, 57600, 76800, 115200, and 230400.
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(You must use
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.Xr termios 4 ,
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rather than the old style ioctl interface to use non-traditional
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speeds.)
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.Pp
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An open on the
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.Nm
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driver will block until carrier is present, unless
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.Dv O_NONBLOCK
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or
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.Dv CLOCAL
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is set.
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.Sh HARDWARE CONFIGURATION
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The first
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.Tn RocketPort
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or
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.Tn RocketPort RA
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card requires a 68-byte contiguous block of I/O addresses,
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starting at one of the following:
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0x100h, 0x140h, 0x180h, 0x200h, 0x240h, 0x280h, 0x300h, 0x340h,
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0x380h.
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The second, third, and fourth
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.Tn RocketPort
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cards require only a
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64-byte contiguous block of I/O addresses, starting at one of the
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above address ranges.
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The I/O address range used by any of the
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.Tn RocketPort
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cards must not conflict with any other cards in the system,
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including other
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.Tn RocketPort
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cards.
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The starting range of the I/O ports used by each card
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must match with the I/O address specified in
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.Pa /boot/device.hints .
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.Pp
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Since the first
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.Tn RocketPort
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uses 68 I/O addresses, if the first card is
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set to use an I/O block starting at 0x100,
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it will occupy the I/O ports between 0x100 and 0x143.
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This means that the second, third, or fourth
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.Tn RocketPort
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board may not use the block of addresses starting at 0x140,
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since the first three I/O addresses of that range
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are used by the first board.
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This is an important point to keep in mind.
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.Pp
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If you have two ISA cards, one installed at 0x100 and the
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second installed at 0x180, then you should add the following to
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.Pa /boot/device.hints :
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.Pp
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.Dl hint.rp.0.at="isa"
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.Dl hint.rp.0.port="0x100"
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.Dl hint.rp.1.at="isa"
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.Dl hint.rp.1.port="0x180"
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.Pp
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The configuration of the
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.Tn RocketPort
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cards is done via the set of 8 DIP switches,
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labeled SW1 on the
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.Tn RocketPort
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card:
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.Bd -literal -offset indent
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+-------------------------------+
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| 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
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+-------+-------+---------------+
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| Unused| Card | I/O Port Block|
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+-------------------------------+
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.Ed
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.Pp
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DIP switches 7 and 8 are unused, and must be left on.
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.Pp
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DIP switches 6 and 5 identify the card number of each
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.Tn RocketPort
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card.
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The first card installed in the system must have its DIP switches set
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as card number one; the second card installed in the system must have
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its DIP switches set as card number two; and so on.
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As shipped from
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the factory, DIP switches 6 and 5 are both on by default, indicating
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that this is the first card installed on the system:
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.Bd -literal -offset indent
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DIP Switches
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6 5
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===================
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On On First Card
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On Off Second Card
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Off On Third Card
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Off Off Fourth Card
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.Ed
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.Pp
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DIP switches 4, 3, 2, and 1 indicate the I/O address range used by the
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first
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.Tn RocketPort
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card.
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If there are more than one
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.Tn RocketPort
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cards installed in a system,
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the second, third and fourth
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.Tn RocketPort
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cards must
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also be set to the I/O address range used by the first
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.Tn RocketPort
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card;
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all cards must have these DIP switches set identically
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for proper operation.
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As shipped from the factory, DIP switch 4 is on,
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and switches 3, 2, and 1 are off by default,
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indicating an I/O address range used by the first
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card which starts at 0x180 and extends to 0x1C3.
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.Bd -literal -offset indent
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DIP Switches I/O Address Range
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4 3 2 1 Used by the First Card
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=====================================
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On Off On Off 100-143
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On Off Off On 140-183
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On Off Off Off 180-1C3
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Off On On Off 200-243
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Off On Off On 240-283
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Off On Off Off 280-2C3
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Off Off On Off 300-343
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Off Off Off On 340-383
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Off Off Off Off 380-3C3
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.Ed
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.Sh FILES
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.Bl -tag -width ".Pa /dev/ttyR[RSTU][0-31]"
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.It Pa /dev/ttyR[RSTU][0-31]
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.El
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.Sh AUTHORS
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.An Theodore Ts'o Aq tytso@mit.edu
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.Pp
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This driver was written under contract for Comtrol Corporation.
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For dealer, distributor and other information regarding Comtrol
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.Tn RocketPort ,
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contact Comtrol Corporation at (800) 926-6876 or send email to
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.Aq info@comtrol.com .
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To report bugs for this driver, please send email to
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.Aq bug-bsdi-rocketport@comtrol.com .
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.Sh BUGS
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If incoming software flow control is enabled on a 486 or Pentium
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machine, and the flow control is very heavily exercised, on rare occasions
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a character will get dropped.
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This problem does not occur on a 386, and
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it is not currently known whether the bug is in the
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.Nm
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driver
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or in the
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.Bsx
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tty layer.
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.\" (Although my bet is that it's in the higher-level tty layer;
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.\" given the bugs I found while writing this driver, it's clear
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.\" the BSD software flow control code has not been tested very much
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.\" at all! -- TYT)
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