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

   MP-009

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

<gopher://bitreich.org/I/th99/i/S-T/50321-1.png>
   

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

   +------------------------------------------------------------+
   |              PRIMARY PORT I/O ADDRESS SELECT               |
   |------------------------------------------------------------|
   |  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   |     |     |     |     |     |     |     |     |
   |-+----------+-----+-----+-----+-----+-----+-----+-----+-----|
   | |  2E0h -  | On  | On  | Off | Off | Off | On  | Off | On  |
   | |   2E7h   |     |     |     |     |     |     |     |     |
   |-+----------+-----+-----+-----+-----+-----+-----+-----+-----|
   | |  260h -  | On  | On  | Off | Off | On  | On  | Off | On  |
   | |   267h   |     |     |     |     |     |     |     |     |
   |-+----------+-----+-----+-----+-----+-----+-----+-----+-----|
   | | Disabled | Off | Off | Off | Off | Off | Off | Off | Off |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             SECONDARY PORT I/O ADDRESS SELECT              |
   |------------------------------------------------------------|
   |  Address   |SW2/1|SW2/2|SW2/3|SW2/4|SW2/5|SW2/6|SW2/7|SW2/8|
   |------------+-----+-----+-----+-----+-----+-----+-----+-----|
   |>>|  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   |     |     |     |     |     |     |     |     |
   |-+----------+-----+-----+-----+-----+-----+-----+-----+-----|
   | |  2E0h -  | On  | On  | Off | Off | Off | On  | Off | On  |
   | |   2E7h   |     |     |     |     |     |     |     |     |
   |-+----------+-----+-----+-----+-----+-----+-----+-----+-----|
   | |  260h -  | On  | On  | Off | Off | On  | On  | Off | On  |
   | |   267h   |     |     |     |     |     |     |     |     |
   |-+----------+-----+-----+-----+-----+-----+-----+-----+-----|
   | | Disabled | Off | Off | Off | Off | Off | Off | Off | Off |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                SERIAL PORT INTERRUPT SELECT                |
   |------------------------------------------------------------|
   |     IRQ     |      JP3 (Port 1)      |    JP4 (Port 2)     |
   |-------------+------------------------+---------------------|
   |    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.                                 |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |    PRIMARY PORT SINGLE/MULTIPLE SOURCE INTERRUPT SELECT    |
   |------------------------------------------------------------|
   |            Setting             |            JP1            |
   |--------------------------------+---------------------------|
   |>>          |      Single       |     Pins 2 & 3 closed     |
   |------------+-------------------+---------------------------|
   |            |     Multiple      |     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       |     Pins 2 & 3 closed      |
   |-----------+-------------------+----------------------------|
   |           |     Multiple      |     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.                |
   +------------------------------------------------------------+