TTC COMPUTER PRODUCTS
=====================

   MP-010

   Card Type          I/O controller                              
   Chipset/Controller National Semiconductor                      
   I/O Options        Serial ports (2)                            
   Maximum DRAM       N/A                                         

<gopher://bitreich.org/I/th99/i/S-T/50315-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |      Purpose      | Location |     Purpose      | Location |
   |-------------------+----------+------------------+----------|
   | Serial port 1     |    J2    | Serial port 2    |    J3    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |           PRIMARY PORT I/O ADDRESS CONFIGURATION           |
   |------------------------------------------------------------|
   |  Address   |SW1/1|SW1/2|SW1/3|SW1/4|SW1/5|SW1/6|SW1/7|SW1/8|
   |------------+-----+-----+-----+-----+-----+-----+-----+-----|
   |>>|  3F8h -  | Off | Off | Off | Off | Off | Off | Off | On  |
   | |   3FFh   |     |     |     |     |     |     |     |     |
   |-+----------+-----+-----+-----+-----+-----+-----+-----+-----|
   | |  2F8h -  | Off | Off | Off | Off | Off | On  | Off | On  |
   | |   2FFh   |     |     |     |     |     |     |     |     |
   |-+----------+-----+-----+-----+-----+-----+-----+-----+-----|
   | |  3E8h -  | Off | On  | Off | Off | Off | Off | Off | On  |
   | |   3EFh   |     |     |     |     |     |     |     |     |
   |-+----------+-----+-----+-----+-----+-----+-----+-----+-----|
   | |  2E8h -  | Off | On  | Off | Off | Off | On  | Off | On  |
   | |   2EFh   |     |     |     |     |     |     |     |     |
   |-+----------+-----+-----+-----+-----+-----+-----+-----+-----|
   | |  2F0h -  | On  | Off | Off | Off | Off | On  | Off | On  |
   | |   2FFh   |     |     |     |     |     |     |     |     |
   |-+----------+-----+-----+-----+-----+-----+-----+-----+-----|
   | |  3E0h -  | On  | On  | Off | Off | Off | Off | Off | On  |
   | |   3E7h   |     |     |     |     |     |     |     |     |
   |-+----------+-----+-----+-----+-----+-----+-----+-----+-----|
   | |  2EOh -  | On  | On  | Off | Off | Off | On  | Off | On  |
   | |   2E7h   |     |     |     |     |     |     |     |     |
   |-+----------+-----+-----+-----+-----+-----+-----+-----+-----|
   | |  26Oh -  | On  | On  | Off | Off | On  | On  | Off | On  |
   | |   267h   |     |     |     |     |     |     |     |     |
   |-+----------+-----+-----+-----+-----+-----+-----+-----+-----|
   | | Disabled | Off | Off | Off | Off | Off | Off | Off | Off |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |          SECONDARY PORT I/O ADDRESS CONFIGURATION          |
   |------------------------------------------------------------|
   |  Address  |SW2/1 |SW2/2|SW2/3|SW2/4|SW2/5|SW2/6|SW2/7|SW2/8|
   |-----------+------+-----+-----+-----+-----+-----+-----+-----|
   |3F8h - 3FFh| Off  | Off | Off | Off | Off | Off | Off | On  |
   |-----------+------+-----+-----+-----+-----+-----+-----+-----|
   |2F8h - 2FFh| Off  | Off | Off | Off | Off | On  | Off | On  |
   |-----------+------+-----+-----+-----+-----+-----+-----+-----|
   |3E8h - 3EFh| Off  | On  | Off | Off | Off | Off | Off | On  |
   |-----------+------+-----+-----+-----+-----+-----+-----+-----|
   |2E8h - 2EFh| Off  | On  | Off | Off | Off | On  | Off | On  |
   |-----------+------+-----+-----+-----+-----+-----+-----+-----|
   |2F0h - 2FFh|  On  | Off | Off | Off | Off | On  | Off | On  |
   |-----------+------+-----+-----+-----+-----+-----+-----+-----|
   |3E0h - 3E7h|  On  | On  | Off | Off | Off | Off | Off | On  |
   |-----------+------+-----+-----+-----+-----+-----+-----+-----|
   |2EOh - 2E7h|  On  | On  | Off | Off | Off | On  | Off | On  |
   |-----------+------+-----+-----+-----+-----+-----+-----+-----|
   |26Oh - 267h|  On  | On  | Off | Off | On  | On  | Off | On  |
   |-----------+------+-----+-----+-----+-----+-----+-----+-----|
   | Disabled  | Off  | Off | Off | Off | Off | Off | Off | Off |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                SERIAL PORT INTERRUPT SELECT                |
   |------------------------------------------------------------|
   |     IRQ      |     Port 1 (JP3)     |     Port 2 (JP4)     |
   |--------------+----------------------+----------------------|
   |     IRQ2     |  Pins 1 & 2 closed   |  Pins 1 & 2 closed   |
   |--------------+----------------------+----------------------|
   |     IRQ3     |  Pins 3 & 4 closed   |  Pins 3 & 4 closed   |
   |--------------+----------------------+----------------------|
   |     IRQ4     |  Pins 5 & 6 closed   |  Pins 5 & 6 closed   |
   |--------------+----------------------+----------------------|
   |     IRQ5     |  Pins 7 & 8 closed   |  Pins 7 & 8 closed   |
   |--------------+----------------------+----------------------|
   |    IRQ10     |  Pins 9 & 10 closed  |  Pins 9 & 10 closed  |
   |--------------+----------------------+----------------------|
   |    IRQ11     | Pins 11 & 12 closed  | Pins 11 & 12 closed  |
   |--------------+----------------------+----------------------|
   |    IRQ12     | Pins 13 & 14 closed  | Pins 13 & 14 closed  |
   |--------------+----------------------+----------------------|
   |    IRQ15     | Pins 15 & 16 closed  | Pins 15 & 16 closed  |
   |--------------+----------------------+----------------------|
   |   Disabled   |         Open         |         Open         |
   |------------------------------------------------------------|
   | Note:The default interrupt setting for Port 1 is IRQ4, and |
   | for Port 2 it is IRQ3.                                     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                RS-422/RS-485 CONFIGURATION                 |
   |------------------------------------------------------------|
   | Port |            Setting            |         JP5         |
   |------+-------------------------------+---------------------|
   |  1   | RTS controls output if RTS is |  Pins 1 & 2 closed  |
   |      |              Low              |                     |
   |------+-------------------------------+---------------------|
   |  1   |    Transmit output enabled    |  Pins 3 & 4 closed  |
   |------+-------------------------------+---------------------|
   |  1   | DTR controls receive input if |  Pins 5 & 6 closed  |
   |      |          DTR is Low           |                     |
   |------+-------------------------------+---------------------|
   |  1   |     Receive input enabled     |  Pins 7 & 8 closed  |
   |------+-------------------------------+---------------------|
   |  2   | RTS controls output if RTS is | Pins 9 & 10 closed  |
   |      |              Low              |                     |
   |------+-------------------------------+---------------------|
   |  2   |    Transmit output enabled    | Pins 11 & 12 closed |
   |------+-------------------------------+---------------------|
   |  2   | DTR controls receive input if | Pins 13 & 14 closed |
   |      |          DTR is Low           |                     |
   |------+-------------------------------+---------------------|
   |  2   |     Receive input enabled     | Pins 15 & 16 closed |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |    PRIMARY PORT SINGLE/MULTIPLE SOURCE INTERRUPT SELECT    |
   |------------------------------------------------------------|
   |             Setting              |           JP1           |
   |----------------------------------+-------------------------|
   |>>       |     Single source      |    Pins 2 & 3 closed    |
   |---------+------------------------+-------------------------|
   |         |    Multiple source     |    Pins 1 & 2 closed    |
   |------------------------------------------------------------|
   |      Note:Multiple source mode allows two or more ports to |
   |      use the same IRQ setting, while Single source mode    |
   |      requires separate IRQ's for each port.                |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |   SECONDARY PORT SINGLE/MULTIPLE SOURCE INTERRUPT SELECT   |
   |------------------------------------------------------------|
   |             Setting              |           JP2           |
   |----------------------------------+-------------------------|
   |>>       |     Single source      |    Pins 2 & 3 closed    |
   |---------+------------------------+-------------------------|
   |         |    Multiple source     |    Pins 1 & 2 closed    |
   |------------------------------------------------------------|
   |      Note:Multiple source mode allows two or more ports to |
   |      use the same IRQ setting, while Single source mode    |
   |      requires separate IRQ's for each port.                |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             TERMINATING RESISTOR CONFIGURATION             |
   |------------------------------------------------------------|
   |      Setting       |        JP6        |        JP7        |
   |--------------------+-------------------+-------------------|
   | Resistors enabled  |      Closed       |      Closed       |
   |--------------------+-------------------+-------------------|
   | Resistors disabled |       Open        |       Open        |
   +------------------------------------------------------------+