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RP(4)			 BSD Kernel Interfaces Manual			 RP(4)

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 fac‐
     tory, 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 opera‐
     tion.  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 char‐
     acter 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.

BSD			       November 15, 1995			   BSD
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