
LAVA COMPUTER MFG, INC.

LAVA 2SP-550

Card Type          Multi I/O
Chipset Controller 16450/16550 UART
I/O Options        Parallel port, Serial ports (2)
Maximum Dram       N/A

[Image]

                                CONNECTIONS

      Purpose           Location           Purpose           Location

  25-pin Parallel         CN1          Serial port 2            CN3
  port                                 internal

  Serial port 1           CN2

                 SERIAL PORT 1 CONFIGURATION

         COM                JP1/B                JP1/A

        COM1           Pins 1 & 2 closed        All open

        COM2           Pins 2 & 3 closed        All open

        COM3               All open        Pins 1 & 2 closed

        COM4               All open        Pins 2 & 3 closed

                  SERIAL PORT 2 CONFIGURATION

         COM                 JP2/B               JP2/A

        COM1           Pins 2 & 3 closed        All open

        COM2           Pins 1 & 2 closed        All open

        COM3               All open         Pins 2 & 3 closed

        COM4               All open         Pins 1 & 2 closed

                      SERIAL PORT 1 INTERRUPT SELECT

    Setting         JP3            JP4            JP5            JP6

     IRQ13       Pins 1 & 2      All open      All open        All open
                   closed

     IRQ12        All open      Pins 1 & 2     All open        All open
                                  closed

     IRQ11        All open       All open      Pins 1 & 2      All open
                                                closed

     IRQ10        All open       All open      All open       Pins 1 & 2
                                                                closed

                      SERIAL PORT 1 INTERRUPT SELECT

    Setting         JP7            JP8            JP9            JP10

     IRQ5        Pins 1 & 2      All open      All open        All open
                   closed

     IRQ2         All open      Pins 1 & 2     All open        All open
                                  closed

     IRQ4         All open       All open      Pins 1 & 2      All open
                                                closed

     IRQ3         All open       All open      All open       Pins 1 & 2
                                                                closed

                      SERIAL PORT 2 INTERRUPT SELECT

    Setting         JP3            JP4            JP5            JP6

     IRQ13       Pins 2 & 3      All open      All open        All open
                   closed

     IRQ12        All open      Pins 2 & 3     All open        All open
                                  closed

     IRQ11        All open       All open      Pins 2 & 3      All open
                                                closed

     IRQ10        All open       All open      All open       Pins 2 & 3
                                                                closed

                      SERIAL PORT 2 INTERRUPT SELECT

    Setting         JP7            JP8            JP9            JP10

     IRQ5        Pins 2 & 3      All open      All open        All open
                   closed

     IRQ2         All open      Pins 2 & 3     All open        All open
                                  closed

     IRQ4         All open       All open      Pins 2 & 3      All open
                                                closed

     IRQ3         All open       All open      All open       Pins 2 & 3
                                                                closed

           PARALLEL PORT SELECT

        Port                JP11/A

        LPT1          Pins 1 & 2 closed

        LPT2          Pins 2 & 3 closed

      PARALLEL PORT INTERRUPT SELECT

         IRQ                JP11/B

        IRQ5          Pins 1 & 2 closed

        IRQ7          Pins 2 & 3 closed

      PARALLEL PORT DIRECTION SELECT

       Setting               JP12

   Bi-Directional     Pins 1 & 2 closed

   Uni-Drectional     Pins 2 & 3 closed

