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Driver for Comtrol RocketPort Intelligent Serial Port Cards.

November 15, 1995
RP(4) BSD Kernel Interfaces Manual RP(4)


rp — driver for Comtrol RocketPort Intelligent Serial Port Cards


device rp For ISA cards, you must specify the port address in /boot/device.hints:"isa" hint.rp.0.port="0x100"


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 simultane‐ ously. If you are using four 32 port RocketPort boards, you can put as many as 128 intelli‐ gent 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.


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 start‐ ing 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:"isa" hint.rp.0.port="0x100""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 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




Theodore Ts'o <> 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 ⟨⟩. 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 con‐ trol is very heavily exercised, on rare occasions a character will get dropped. This prob‐ lem 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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