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 con-
     tiguous 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.

BSD
								 November 15, 1995							       BSD