MICRO EQUIPMENT CORPORATION

UN-451

Card Type          Multi I/O card
Chipset/Controller Unknown
I/O Options        Game port, parallel port, serial ports (2)
Maximum DRAM       N/A

[Image]

                                CONNECTIONS

       Purpose          Location            Purpose            Location

    Parallel port          CN1           Serial port 1           ASYN1

      Game port            CN2            Serial port 2          ASYN2
                                           (optional)

                        PARALLEL PORT CONFIGURATION

              LPT/Address/IRQ                            JP1

  »              LPT1/378h/IRQ7                Pins 5 & 6/2 & 3 closed

                 LPT2/278h/IRQ5                Pins 4 & 5/1 & 2 closed

                    Disable                  Pins 4, 5, & 6/1, 2, & 3 all
                                                         open

                    SERIAL PORT 1 (ASYN1) CONFIGURATION

              COM/Address/IRQ                            JP1

  »              COM1/3F8h/IRQ4              Pins 20 & 21/10 & 11 closed

                 COM2/2F8h/IRQ3              Pins 16 & 17/11 & 12 closed

                 COM4/2E8h/IRQ3              Pins 19 & 20/11 & 12 closed

                    Disable                     Pins 16 & 17/19, 20, &
                                               21/10, 11, & 12 all open

                    SERIAL PORT 2 (ASYN2) CONFIGURATION

              COM/Address/IRQ                            JP1

  »              COM2/2F8h/IRQ3               Pins 17 & 18/8 & 9 closed

                 COM3/3E8h/IRQ4               Pins 13 & 14/7 & 8 closed

                 COM4/2E8h/IRQ3               Pins 14 & 15/8 & 9 closed

                    Disable                  Pins 17 & 18/13, 14, & 15/7,
                                                   8, & 9 all open

                       MISCELLANEOUS TECHNICAL NOTES

    Serial port 2 (ASYN2) exists only on model UN451b. Model UN-451a has
                           only one serial port

   The pin numbers for JP1 printed on the actual card are incorrect. Use
    the numbers depicted on the above diagram to re-configure the card.

   The game port can be disabled by cutting a wire on the soldering side
  of the card. It is located near the edge opposite of the external ports
                          and toward the center.