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

   MP-001

   Card Type          I/O controller                              
   Chipset/Controller National Semiconductor                      
   I/O Options        Serial port (4)                             
   Maximum DRAM       N/A                                         

<gopher://bitreich.org/I/th99/i/S-T/50334-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |      Purpose      | Location |     Purpose      | Location |
   |-------------------+----------+------------------+----------|
   | Serial port 1     |    J2    | Serial port 3    |    J4    |
   |-------------------+----------+------------------+----------|
   | Serial port 2     |    J3    | Serial port 4    |    J5    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 BASE ADDRESS CONFIGURATION                 |
   |------------------------------------------------------------|
   | Address Range |   SW1/1   |  SW1/2   |  SW1/3   |  SW1/4   |
   |---------------+-----------+----------+----------+----------|
   |  3F8h - 3FFh  |    Off    |   N/A    |   N/A    |   N/A    |
   |---------------+-----------+----------+----------+----------|
   |  2F0h - 2F7h  |    On     |   N/A    |   N/A    |   N/A    |
   |---------------+-----------+----------+----------+----------|
   |  2F8h - 2FFh  |    N/A    |   Off    |   N/A    |   N/A    |
   |---------------+-----------+----------+----------+----------|
   |  3E0h - 3E7h  |    N/A    |    On    |   N/A    |   N/A    |
   |---------------+-----------+----------+----------+----------|
   |  3E8h - 3EFh  |    N/A    |   N/A    |   Off    |   N/A    |
   |---------------+-----------+----------+----------+----------|
   |  2E0h - 2E7h  |    N/A    |   N/A    |    On    |   N/A    |
   |---------------+-----------+----------+----------+----------|
   |  2E8h - 2FFh  |    N/A    |   N/A    |   N/A    |   Off    |
   |---------------+-----------+----------+----------+----------|
   |  260h - 267h  |    N/A    |   N/A    |   N/A    |    On    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             PRIMARY PORT ADDRESS CONFIGURATION             |
   |------------------------------------------------------------|
   |  Address Range  |  SW3/5   |  SW3/6   |  SW3/7   |  SW3/8  |
   |-----------------+----------+----------+----------+---------|
   |>> | 3F8h - 3FFh |    On    |   Off    |   Off    |   Off   |
   |---+-------------+----------+----------+----------+---------|
   |   | 2F0h - 2F7h |    On    |   Off    |   Off    |   Off   |
   |---+-------------+----------+----------+----------+---------|
   |   | 2F8h - 2FFh |   Off    |    On    |   Off    |   Off   |
   |---+-------------+----------+----------+----------+---------|
   |   | 3E0h - 3E7h |   Off    |    On    |   Off    |   Off   |
   |---+-------------+----------+----------+----------+---------|
   |   | 3E8h - 3EFh |   Off    |   Off    |    On    |   Off   |
   |---+-------------+----------+----------+----------+---------|
   |   | 2E0h - 2E7h |   Off    |   Off    |    On    |   Off   |
   |---+-------------+----------+----------+----------+---------|
   |   | 2E8h - 2FFh |   Off    |   Off    |   Off    |   On    |
   |---+-------------+----------+----------+----------+---------|
   |   | 260h - 267h |   Off    |   Off    |   Off    |   On    |
   |---+-------------+----------+----------+----------+---------|
   |   |  Disabled   |   Off    |   Off    |   Off    |   Off   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |            SECONDARY PORT ADDRESS CONFIGURATION            |
   |------------------------------------------------------------|
   |  Address Range  |  SW3/1   |  SW3/2   |  SW3/3   |  SW3/4  |
   |-----------------+----------+----------+----------+---------|
   |>> | 2F8h - 2FFh |   Off    |    On    |   Off    |   Off   |
   |---+-------------+----------+----------+----------+---------|
   |   | 3F8h - 3FFh |    On    |   Off    |   Off    |   Off   |
   |---+-------------+----------+----------+----------+---------|
   |   | 2F0h - 2F7h |    On    |   Off    |   Off    |   Off   |
   |---+-------------+----------+----------+----------+---------|
   |   | 3E0h - 3E7h |   Off    |    On    |   Off    |   Off   |
   |---+-------------+----------+----------+----------+---------|
   |   | 3E8h - 3EFh |   Off    |   Off    |    On    |   Off   |
   |---+-------------+----------+----------+----------+---------|
   |   | 2E0h - 2E7h |   Off    |   Off    |    On    |   Off   |
   |---+-------------+----------+----------+----------+---------|
   |   | 2E8h - 2FFh |   Off    |   Off    |   Off    |   On    |
   |---+-------------+----------+----------+----------+---------|
   |   | 260h - 267h |   Off    |   Off    |   Off    |   On    |
   |---+-------------+----------+----------+----------+---------|
   |   |  Disabled   |   Off    |   Off    |   Off    |   Off   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              THIRD PORT ADDRESS CONFIGURATION              |
   |------------------------------------------------------------|
   |  Address Range  |  SW2/1   |  SW2/2   |  SW2/3   |  SW2/4  |
   |-----------------+----------+----------+----------+---------|
   |>> | 3E8h - 3EFh |   Off    |   Off    |    On    |   Off   |
   |---+-------------+----------+----------+----------+---------|
   |   | 3F8h - 3FFh |    On    |   Off    |   Off    |   Off   |
   |---+-------------+----------+----------+----------+---------|
   |   | 2F0h - 2F7h |    On    |   Off    |   Off    |   Off   |
   |---+-------------+----------+----------+----------+---------|
   |   | 2F8h - 2FFh |   Off    |    On    |   Off    |   Off   |
   |---+-------------+----------+----------+----------+---------|
   |   | 3E0h - 3E7h |   Off    |    On    |   Off    |   Off   |
   |---+-------------+----------+----------+----------+---------|
   |   | 2E0h - 2E7h |   Off    |   Off    |    On    |   Off   |
   |---+-------------+----------+----------+----------+---------|
   |   | 2E8h - 2FFh |   Off    |   Off    |   Off    |   On    |
   |---+-------------+----------+----------+----------+---------|
   |   | 260h - 267h |   Off    |   Off    |   Off    |   On    |
   |---+-------------+----------+----------+----------+---------|
   |   |  Disabled   |   Off    |   Off    |   Off    |   Off   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             FOURTH PORT ADDRESS CONFIGURATION              |
   |------------------------------------------------------------|
   |  Address Range  |  SW2/5   |  SW2/6   |  SW2/7   |  SW2/8  |
   |-----------------+----------+----------+----------+---------|
   |>> | 260h - 267h |   Off    |   Off    |   Off    |   On    |
   |---+-------------+----------+----------+----------+---------|
   |   | 3F8h - 3FFh |    On    |   Off    |   Off    |   Off   |
   |---+-------------+----------+----------+----------+---------|
   |   | 2F0h - 2F7h |    On    |   Off    |   Off    |   Off   |
   |---+-------------+----------+----------+----------+---------|
   |   | 2F8h - 2FFh |   Off    |    On    |   Off    |   Off   |
   |---+-------------+----------+----------+----------+---------|
   |   | 3E0h - 3E7h |   Off    |    On    |   Off    |   Off   |
   |---+-------------+----------+----------+----------+---------|
   |   | 3E8h - 3EFh |   Off    |   Off    |    On    |   Off   |
   |---+-------------+----------+----------+----------+---------|
   |   | 2E0h - 2E7h |   Off    |   Off    |    On    |   Off   |
   |---+-------------+----------+----------+----------+---------|
   |   | 2E8h - 2FFh |   Off    |   Off    |   Off    |   On    |
   |---+-------------+----------+----------+----------+---------|
   |   |  Disabled   |   Off    |   Off    |   Off    |   Off   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      INTERRUPT SELECT                      |
   |------------------------------------------------------------|
   | Port 1 |Port 2 |Port 3 |Port 4 |SW1/5 |SW1/6 |SW1/7 |SW1/8 |
   |--------+-------+-------+-------+------+------+------+------|
   |>>| IRQ4 | IRQ3  | IRQ4  | IRQ3  | Off  |  On  | Off  |  On  |
   |-+------+-------+-------+-------+------+------+------+------|
   | | IRQ3 | IRQ4  | IRQ2  | IRQ5  |  On  |  On  |  On  |  On  |
   |-+------+-------+-------+-------+------+------+------+------|
   | | IRQ4 | IRQ3  | IRQ2  | IRQ5  | Off  |  On  |  On  |  On  |
   |-+------+-------+-------+-------+------+------+------+------|
   | | IRQ3 | IRQ4  | IRQ5  | IRQ2  |  On  | Off  |  On  |  On  |
   |-+------+-------+-------+-------+------+------+------+------|
   | | IRQ4 | IRQ3  | IRQ5  | IRQ2  | Off  | Off  |  On  |  On  |
   |-+------+-------+-------+-------+------+------+------+------|
   | | IRQ3 | IRQ4  | IRQ3  | IRQ4  |  On  |  On  | Off  |  On  |
   |-+------+-------+-------+-------+------+------+------+------|
   | | IRQ3 | IRQ4  | IRQ4  | IRQ3  |  On  | Off  | Off  |  On  |
   |-+------+-------+-------+-------+------+------+------+------|
   | | IRQ4 | IRQ3  | IRQ3  | IRQ4  | Off  | Off  | Off  |  On  |
   +------------------------------------------------------------+