UNIDENTIFIED
============

   MT-456

   Card Type          Multi I/O card                              
   Chipset/Controller Unidentified                                
   I/O Options        Parallel port, serial ports (2), game port  
   Maximum DRAM       N/A                                         

<gopher://bitreich.org/I/th99/i/U-Z/50554-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |       Purpose        | Location |    Purpose    | Location |
   |----------------------+----------+---------------+----------|
   | Serial port 2 -      |    J3    | Game port     |    J5    |
   | internal             |          |               |          |
   |----------------------+----------+---------------+----------|
   | Serial port 1 -      |    J4    | Parallel port |    J6    |
   | internal             |          |               |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                SERIAL PORT 1 CONFIGURATION                 |
   |------------------------------------------------------------|
   |   COM/Address   |       J1/JP1        |       J1/JP2       |
   |-----------------+---------------------+--------------------|
   |>> |  COM1/3F8h  |  Pins 1 & 2 closed  | Pins 1 & 2 closed  |
   |---+-------------+---------------------+--------------------|
   |   |  COM3/3E8h  |  Pins 2 & 3 closed  | Pins 1 & 2 closed  |
   |---+-------------+---------------------+--------------------|
   |   |  Disabled   |         N/A         | Pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               SERIAL PORT 1 INTERRUPT SELECT               |
   |------------------------------------------------------------|
   |   IRQ    |    J2/A    |    J2/B    |   J2/C    |   J2/D    |
   |----------+------------+------------+-----------+-----------|
   |>> | IRQ4 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 &  | Pins 2 &  |
   |   |      |   closed   |    open    |  3 open   |  3 open   |
   |---+------+------------+------------+-----------+-----------|
   |   | IRQ3 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 &  | Pins 2 &  |
   |   |      |    open    |   closed   |  3 open   |  3 open   |
   |---+------+------------+------------+-----------+-----------|
   |   | IRQ5 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 &  | Pins 2 &  |
   |   |      |    open    |    open    | 3 closed  |  3 open   |
   |---+------+------------+------------+-----------+-----------|
   |   | IRQ9 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 &  | Pins 2 &  |
   |   |      |    open    |    open    |  3 open   | 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                SERIAL PORT 2 CONFIGURATION                 |
   |------------------------------------------------------------|
   |   COM/Address   |       J1/JP3        |       J1/JP4       |
   |-----------------+---------------------+--------------------|
   |>> |  COM2/2F8h  |  Pins 1 & 2 closed  | Pins 1 & 2 closed  |
   |---+-------------+---------------------+--------------------|
   |   |  COM4/2E8h  |  Pins 2 & 3 closed  | Pins 1 & 2 closed  |
   |---+-------------+---------------------+--------------------|
   |   |  Disabled   |         N/A         | Pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               SERIAL PORT 2 INTERRUPT SELECT               |
   |------------------------------------------------------------|
   |   IRQ    |    J2/A    |    J2/B    |   J2/C    |   J2/D    |
   |----------+------------+------------+-----------+-----------|
   |>> | IRQ3 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 &  | Pins 1 &  |
   |   |      |    open    |   closed   |  2 open   |  2 open   |
   |---+------+------------+------------+-----------+-----------|
   |   | IRQ4 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 &  | Pins 1 &  |
   |   |      |   closed   |    open    |  2 open   |  2 open   |
   |---+------+------------+------------+-----------+-----------|
   |   | IRQ5 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 &  | Pins 1 &  |
   |   |      |    open    |    open    | 2 closed  |  2 open   |
   |---+------+------------+------------+-----------+-----------|
   |   | IRQ9 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 &  | Pins 1 &  |
   |   |      |    open    |    open    |  2 open   | 2 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                PARALLEL PORT CONFIGURATION                 |
   |------------------------------------------------------------|
   |   LPT/Address   |       J1/JP5        |       J1/JP6       |
   |-----------------+---------------------+--------------------|
   |>> |  LPT1/378h  |  Pins 1 & 2 closed  | Pins 1 & 2 closed  |
   |---+-------------+---------------------+--------------------|
   |   |  LPT2/278h  |  Pins 2 & 3 closed  | Pins 1 & 2 closed  |
   |---+-------------+---------------------+--------------------|
   |   |  Disabled   |         N/A         | Pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               PARALLEL PORT INTERRUPT SELECT               |
   |------------------------------------------------------------|
   |            IRQ             |             J2/E              |
   |----------------------------+-------------------------------|
   |            IRQ5            |       Pins 2 & 3 closed       |
   |----------------------------+-------------------------------|
   |            IRQ7            |       Pins 1 & 2 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         GAME PORT                          |
   |------------------------------------------------------------|
   |          Setting           |            J1/JP7             |
   |----------------------------+-------------------------------|
   |>> |        Enabled         |       Pins 1 & 2 closed       |
   |---+------------------------+-------------------------------|
   |   |        Disabled        |       Pins 2 & 3 closed       |
   +------------------------------------------------------------+