
SDL COMMUNICATIONS, INC.

RISCOM/N2

Card Type              Serial
Chip Set               Hitachi HD64570
Maximum Onboard Memory 256KB DRAM
Data Bus               16-bit ISA

[Image]

                                CONNECTIONS

         Function            Label            Function            Label

  RS-232, RS-422/449,         CN1      RS-232, RS-422/449,         CN2
  RS-530, or V.35 port 1               RS-530, or V.35 port 2

                        USER CONFIGURABLE SETTINGS

                 Function                    Label         Position

     Factory configured - do not alter      S1/7        Unidentified

     Factory configured - do not alter      S1/8        Unidentified

                                 INTERRUPT

            J1 is used to set the interrupt. Exact settings are
            unidentified. Interrupts 3, 4, 5, 9, 10, 11, 12, and 15 are
            available.

                             BASE I/O ADDRESS

   Setting      SW1/1     SW1/2     SW1/3     SW1/4     SW1/5      SW1/6

       100h      On        On        On         On       Off        On

       110h      Off       On        On         On       Off        On

       120h      On        Off       On         On       Off        On

       130h      Off       Off       On         On       Off        On

       140h      On        On        Off        On       Off        On

      300h      On        On        On         On       Off        Off

       3B0h      Off       Off       On        Off       Off        Off

       3C0h      On        On        Off       Off       Off        Off

       3D0h      Off       On        Off       Off       Off        Off

       3E0h      On        Off       Off       Off       Off        Off

       3F0h      Off       Off       Off       Off       Off        Off

            Note: A total of 48 base address settings are available. The
            switches are a binary representation of the decimal memory
            addresses. SW1/6 is the Most Significant Bit and switch SW1/1
            is the Least Significant Bit. The switches have the following
            decimal values: SW1/6=512, SW1/5=256, SW1/4=128, SW1/3=64,
            SW1/2=32, SW1/1=16. Turn off the switches and add the values
            of the switches to obtain the correct memory address. (Off=1,
            On=0)

