MODULAR CIRCUIT TECHNOLOGY

MCT-AMS

Card Type          Serial card
Chipset/Controller Unidentified UART
I/O Options        Serial ports (4)
Maximum DRAM       N/A

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                          CONNECTIONS

      Purpose         Location       Purpose         Location

  Serial port 3          J1      Serial port 2          J3

  Serial port 4          J2      Serial port 1          J4

                      SERIAL PORT ADDRESS MODE

   Mode      Port 1(J4)     Port 2(J3)    Port 3(J1)    Port 4(J2)

     A          COM1           COM2          COM3          COM4

     B          COM2           COM3          COM4          COM5

     C          COM3           COM4          COM5          COM6

     D          COM4           COM5          COM6          COM7

     E          COM5           COM6          COM7          COM8

     F          COM6           COM7          COM8           N/A

     G          COM7           COM8           N/A           N/A

     H          COM8           N/A            N/A           N/A

  SERIAL PORT ADDRESS JUMPER CONFIGURATION

    Mode       SW1/1      SW1/2      SW1/3

     A          Off        Off        Off

     B          Off        Off        On

     C          Off         On        Off

     D          Off         On        On

     E           On        Off        Off

     F           On        Off        On

     G           On         On        Off

     H           On         On        On

                  PRIMARY SERIAL PORT INTERRUPT SELECTION

       IRQ           SW2/1         SW2/2          SW2/3         SW2/4

  »     IRQ4          Off           Off            On            Off

        IRQ2          On            Off            Off           Off

        IRQ3          Off            On            Off           Off

        IRQ5          Off           Off            Off            On

                 SECONDARY SERIAL PORT INTERRUPT SELECTION

       IRQ           SW2/5         SW2/6          SW2/7         SW2/8

  »     IRQ3          Off            On            Off           Off

        IRQ2          On            Off            Off           Off

        IRQ4          Off           Off            On            Off

        IRQ5          Off           Off            Off            On

                   THIRD SERIAL PORT INTERRUPT SELECTION

       IRQ           SW3/1         SW3/2          SW3/3         SW3/4

  »     IRQ4          Off           Off            On            Off

        IRQ2          On            Off            Off           Off

        IRQ3          Off            On            Off           Off

        IRQ5          Off           Off            Off            On

                  FOURTH SERIAL PORT INTERRUPT SELECTION

       IRQ           SW3/5         SW3/6          SW3/7         SW3/8

  »     IRQ3          Off            On            Off           Off

        IRQ2          On            Off            Off           Off

        IRQ4          Off           Off            On            Off

        IRQ5          Off           Off            Off            On

           PRIMARY SERIAL PORT NORMAL/FORCED-TRUE CONFIGURATION

         Setting               JP8/A           JP8/B            JP8/C

  »         Normal           Pins 1 & 2      Pins 1 & 2       Pins 1 & 2
                              closed           closed          closed

         Forced-True         Pins 2 & 3      Pins 2 & 3       Pins 2 & 3
                              closed           closed          closed

  PRIMARY SERIAL PORT DTE/DCE SELECTION

                JUMPER JP7

  [Image]              [Image]

          SECONDARY SERIAL PORT NORMAL/FORCED-TRUE CONFIGURATION

         Setting               JP6/A           JP6/B            JP6/C

  »         Normal           Pins 1 & 2      Pins 1 & 2       Pins 1 & 2
                              closed           closed          closed

         Forced-True         Pins 2 & 3      Pins 2 & 3       Pins 2 & 3
                              closed           closed          closed

  SECONDARY SERIAL PORT DTE/DCE SELECTION

                 JUMPER JP5

  [Image]               [Image]

            THIRD SERIAL PORT NORMAL/FORCED-TRUE CONFIGURATION

         Setting               JP3/A           JP3/B            JP3/C

  »         Normal           Pins 1 & 2      Pins 1 & 2       Pins 1 & 2
                              closed           closed          closed

         Forced-True         Pins 2 & 3      Pins 2 & 3       Pins 2 & 3
                              closed           closed          closed

  THIRD SERIAL PORT DTE/DCE SELECTION

               JUMPER JP1

  [Image]             [Image]

            FOURTH SERIAL PORT NORMAL/FORCED-TRUE CONFIGURATION

         Setting               JP4/A           JP4/B            JP4/C

  »         Normal           Pins 1 & 2      Pins 1 & 2       Pins 1 & 2
                              closed           closed          closed

         Forced-True         Pins 2 & 3      Pins 2 & 3       Pins 2 & 3
                              closed           closed          closed

  FOURTH SERIAL PORT DTE/DCE SELECTION

               JUMPER JP2

  [Image]             [Image]