
COMTROL CORPORATION

HOSTESS 550 RJ11

Card Type      Serial
Chipset        16554
I/O Options    Serial ports (4)
Data Bus       16-bit ISA
Card Size      Full height, three-quarters length

[Image]

                                CONNECTIONS

          Function             Label           Function             Label

  Serial port 1                 J1     Serial port 5                 J5

  Serial port 2                 J2     Serial port 6                 J6

  Serial port 3                 J3     Serial port 7                 J7

  Serial port 4                 J4     Serial port 8                 J8

                        USER CONFIGURABLE SETTINGS

                   Setting                      Label        Position

     Factory configured - do not alter         SW1/1           Off

      Interrupt mask enabled                    SW2/1           On

      Interrupt mask disabled                   SW2/1           Off

                        BASE I/O ADDRESS SELECTION

   Setting    SW1/2    SW1/3    SW1/4    SW1/5   SW1/6    SW1/7    SW1/8

      0000h     On       On      On       On       On       On       On

      0040h    Off       On      On       On       On       On       On

      0080h     On      Off      On       On       On       On       On

      00C0h    Off      Off      On       On       On       On       On

      0100h     On       On      Off      On       On       On       On

     0280h     On      Off      On       Off      On       On       On

      1EC0h    Off      Off      On       Off     Off      Off      Off

      1F00h     On       On      Off      Off     Off      Off      Off

      1F40h    Off       On      Off      Off     Off      Off      Off

      1F80h     On      Off      Off      Off     Off      Off      Off

      1FC0h    Off      Off      Off      Off     Off      Off      Off

            Note: A total of 256 base address settings are available. The
            switches are a binary representation of the decimal memory
            addresses. SW1/8 is the Most Significant Bit and switch SW1/2
            is the Least Significant Bit. The switches have the following
            decimal values: SW1/8=4096, SW1/7=2048, SW1/6=1024,
            SW1/5=512, SW1/4=256, SW1/3=128, SW1/2=64. Turn off the
            switches and add the values of the switches that are off to
            obtain the correct memory address. (Off=1, On=0)

                            INTERRUPT SELECTION

  Setting     SW2/2    SW2/3    SW2/4    SW2/5    SW2/6    SW2/7    SW2/8

     2         On       Off      Off      Off      Off      Off     Off

     3         Off      On       Off      Off      Off      Off     Off

     4         Off      Off      On       Off      Off      Off     Off

     5         Off      Off      Off      On       Off      Off     Off

     7         Off      Off      Off      Off      On       Off     Off

     10        Off      Off      Off      Off      Off      On      Off

     11        Off      Off      Off      Off      Off      Off      On

