DATA TECHNOLOGY CORPORATION
===========================

   DTC2278E (400518-89A)

   Data Bus             32-bit VESA Local Bus                     
   Card Size            Three-quarter length, half-height card    
   Hard Drives          Four IDE (AT) or EIDE drives              
   supported            
   Floppy drives        Two 360KB, 720KB, 1.2MB, or 1.44MB drives 
   supported            

<gopher://bitreich.org/I/th99/c/C-D/21091-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |     Function      | Location |     Function     | Location |
   |-------------------+----------+------------------+----------|
   | 10-pin serial     |    J2    | 40-pin secondary |    J6    |
   | port 2 - internal |          | IDE(AT)          |          |
   |                   |          | connector        |          |
   |-------------------+----------+------------------+----------|
   | 9-pin serial port |    J3    | 40-pin primary   |    J7    |
   | 1 - external      |          | IDE(AT)          |          |
   |                   |          | connector        |          |
   |-------------------+----------+------------------+----------|
   | 16-pin game port  |    J4    | 4-pin connector  |    J8    |
   |                   |          | - drive active   |          |
   |                   |          | LED              |          |
   |-------------------+----------+------------------+----------|
   | 34-pin cable      |    J5    | 25-pin parallel  |    J9    |
   | connector -       |          | port - external  |          |
   | floppy drive      |          |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Function                | Label | Position  |
   |----------------------------------------+-------+-----------|
   |>> | Game port enabled                  |  W14  |  Closed   |
   |---+------------------------------------+-------+-----------|
   |   | Game port disabled                 |  W14  |   Open    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             SERIAL PORT 1 ADDRESS SELECTION             |  |
   |---------------------------------------------------------|  |
   |         COM         |        W5         |      W6       |  |
   |---------------------+-------------------+---------------|  |
   |>> |   COM1 (3F8h)   | Pins 1 & 2 closed |  Pins 2 & 3   |  |
   |   |                 |                   |    closed     |  |
   |---+-----------------+-------------------+---------------|  |
   |   |   COM3 (3E8h)   | Pins 2 & 3 closed |  Pins 1 & 2   |  |
   |   |                 |                   |    closed     |  |
   |---+-----------------+-------------------+---------------|  |
   |   |    Disabled     | Pins 1 & 2 closed |  Pins 1 & 2   |  |
   |   |                 |                   |    closed     |  |
   |---+--------------------------------------------------------|
   |   | Notes: COM1 & COM3 are automatically configured to     |
   |   | IRQ4. COM2 & COM4 are automatically configured         |
   |   |                                                        |
   |   | to IRQ3.                                               |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             SERIAL PORT 2 ADDRESS SELECTION             |  |
   |---------------------------------------------------------|  |
   |         COM         |        W3         |      W4       |  |
   |---------------------+-------------------+---------------|  |
   |>> |   COM2 (2F8h)   | Pins 1 & 2 closed |  Pins 2 & 3   |  |
   |   |                 |                   |    closed     |  |
   |---+-----------------+-------------------+---------------|  |
   |   |   COM4 (2E8h)   | Pins 2 & 3 closed |  Pins 1 & 2   |  |
   |   |                 |                   |    closed     |  |
   |---+-----------------+-------------------+---------------|  |
   |   |    Disabled     | Pins 1 & 2 closed |  Pins 1 & 2   |  |
   |   |                 |                   |    closed     |  |
   |---+--------------------------------------------------------|
   |   | Notes: COM1 & COM3 are automatically configured to     |
   |   | IRQ4. COM2 & COM4 are automatically                    |
   |   |                                                        |
   |   | configured to IRQ3.                                    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              PARALLEL PORT ADDRESS SELECTION               |
   |------------------------------------------------------------|
   |       LPT        |         W1         |         W2         |
   |------------------+--------------------+--------------------|
   |>> | LPT1 (378h)  | Pins 2 & 3 closed  | Pins 1 & 2 closed  |
   |---+--------------+--------------------+--------------------|
   |   | LPT2 (278h)  | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
   |---+--------------+--------------------+--------------------|
   |   | LPT3 (3BCh)  | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
   |---+--------------+--------------------+--------------------|
   |   |   Disabled   | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              PARALLEL PORT MODE CONFIGURATION              |
   |------------------------------------------------------------|
   |       Mode       |         W7         |        W22         |
   |------------------+--------------------+--------------------|
   |     |    ECP     | Pins 2 & 3 closed  | Pins 1 & 2 closed  |
   |-----+------------+--------------------+--------------------|
   |     |    EPP     | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
   |-----+------------+--------------------+--------------------|
   |>>   |  Printer   | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
   |------------------------------------------------------------|
   | Note: You must select a DMA channel when using ECP mode.   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DMA CONFIGURATION                      |
   |------------------------------------------------------------|
   |   Mode    |     W8     |    W9     |    W10    |    W11    |
   |-----------+------------+-----------+-----------+-----------|
   |   |   1   |   Closed   |   Open    |  Closed   |   Open    |
   |---+-------+------------+-----------+-----------+-----------|
   |>> |   3   |    Open    |  Closed   |   Open    |  Closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             SERIAL PORT 1 INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |      IRQ       |     W19      |     W20      |     W21     |
   |----------------+--------------+--------------+-------------|
   |   |    IRQ3    |     Open     |    Closed    |    Open     |
   |---+------------+--------------+--------------+-------------|
   |>> |    IRQ4    |     Open     |     Open     |   Closed    |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ5    |    Closed    |     Open     |    Open     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             SERIAL PORT 2 INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |      IRQ       |     W16      |     W17      |     W18     |
   |----------------+--------------+--------------+-------------|
   |>> |    IRQ3    |     Open     |     Open     |   Closed    |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ4    |     Open     |    Closed    |    Open     |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ5    |    Closed    |     Open     |    Open     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  PARALLEL PORT INTERRUPT                   |
   |------------------------------------------------------------|
   |         IRQ         |        W12        |       W13        |
   |---------------------+-------------------+------------------|
   |>> |      IRQ7       |       Open        |      Closed      |
   |---+-----------------+-------------------+------------------|
   |   |      IRQ5       |      Closed       |       Open       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               MISCELLANEOUS TECHNICAL NOTES                |
   |------------------------------------------------------------|
   | The floppy controller in automatically configured. When a  |
   | cable is attached, it is enabled; when no cable is         |
   | attached it is disabled.                                   |
   +------------------------------------------------------------+