LAVA COMPUTER MANUFACTURING, INC.

LAVA RS422-550

Card Type               Multi-I/O card
Chip Set                Unidentified
Maximum Onboard Memory  Unidentified
I/O Options             Serial ports (2 RS-422)
Hard Drives supported   None
Floppy drives supported None
Data Bus                8-bit ISA
Card Size               Half-length

[Image]

                                CONNECTIONS

          Function             Label           Function             Label

  9-pin serial port A          CN1     9-pin serial port B          CN2

     SERIAL PORT A ADDRESS SELECTION

      Setting               JP3

    COM1 (3F8h)       Pins 1 & 2 closed

    COM2 (2F8h)       Pins 2 & 3 closed

    COM3 (3E8h)       Pins 4 & 5 closed

    COM4 (2E8h)       Pins 5 & 6 closed

      Disabled              Open

     SERIAL PORT B ADDRESS SELECTION

      Setting               JP2

    COM1 (3F8h)       Pins 1 & 2 closed

    COM2 (2F8h)       Pins 2 & 3 closed

    COM3 (3E8h)       Pins 4 & 5 closed

    COM4 (2E8h)       Pins 5 & 6 closed

      Disabled              Open

    SERIAL PORT A INTERRUPT SELECTION

        IRQ                 JP1

        IRQ4          Pins 1 & 2 closed

        IRQ3          Pins 2 & 3 closed

    SERIAL PORT B INTERRUPT SELECTION

        IRQ                 JP1

        IRQ3          Pins 3 & 4 closed

        IRQ4          Pins 4 & 5 closed