COMTROL CORPORATION

HOSTESS CLUSTER

Category               Serial controller
Chipset Controller     NEC
I /O Options Supported Serial ports (16)
Maximum Onboard Memory 2MB

[Image]

                                CONNECTIONS

       Purpose           Location           Purpose           Location

    100-pin serial          CN1          8-port upgrade          CN3
       interface                         card connector
      connector

    8-port upgrade          CN2
    card connector

                      RS-232/RS-422 SELECT - JP1-JP8

     Setting         Jumper A      Jumper B      Jumper C      Jumper D

  »     RS-232      Pins 1 & 2    Pins 1 & 2     Pins 1 & 2    Pins 1 & 2
                      closed        closed        closed        closed

        RS-422      Pins 2 & 3    Pins 2 & 3     Pins 2 & 3    Pins 2 & 3
                      closed        closed        closed        closed

  Note:JP1-JP8 correspond to serial ports 1 - 8, respectively. Jumper D
  does not exist on JP5-JP8.

            PORT 1 FULL/HALF DUPLEX SELECT

          Setting                     FD1

     Half-duplex mode          Pins 1 & 2 closed

  Full-duplex mode (DMA1)      Pins 2 & 3 closed

            PORT 2 FULL/HALF DUPLEX SELECT

          Setting                     FD2

     Half-duplex mode          Pins 1 & 2 closed

  Full-duplex mode (DMA2)      Pins 2 & 3 closed

  PORTS 1 & 2 RS-232 SYNCHRONOUS/ASYNCHRONOUS SELECT - JP9

      Setting         Jumper A - Jumper E   Jumper F - Jumper M

    Asynchronous      Pins 1 & 2 closed      Pins 1 & 2 closed

    Synchronous       Pins 2 & 3 closed      Pins 1 & 2 closed

                 PORT 1 DATA TERMINAL READY (DTR) OPTIONS

            Setting                     JP14                  JP15

  »        Normal RS-232               Closed                 Open

         Synchronous RS-232             Open                 Closed

                 PORT 2 DATA TERMINAL READY (DTR) OPTIONS

            Setting                     JP16                  JP17

  »        Normal RS-232               Closed                 Open

         Synchronous RS-232             Open                 Closed

                                I/O ADDRESS

       Setting              SW1/1             SW1/2            SW1/3

  »        218h              Off               Off              Off

           21Ch               On               Off              Off

           238h              Off                On              Off

           23Ch               On                On              Off

                            DRAM CONFIGURATION

               Memory Size                            Bank 0

  »                 128KB                           (2) 64K x 9

                     2MB                            (2) 1M x 9