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       # DATA TECHNOLOGY CORPORATION
       
          DTC2278D+ (400537-89A)
       
          Card Type               Hard drive controller card             
          Hard drives supported   Four IDE(AT) interface drives          
          Floppy drives supported Two 360KB, 720KB, 1.2MB, 1.44MB drives 
          Data-bus                32-bit VESA Local Bus                  
          Size                    Full-length, half-height card          
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |      Function       | Label |       Function       | Label |
          |---------------------+-------+----------------------+-------|
          | 25-pin parallel     |  J1   | 34-pin control cable |  J5   |
          | port - external     |       | connector - floppy   |       |
          |                     |       | drive                |       |
          |---------------------+-------+----------------------+-------|
          | 10-pin serial port  |  J2   | 40-pin IDE(AT)       |  J6   |
          | 2 - internal        |       | secondary interface  |       |
          |                     |       | connector            |       |
          |---------------------+-------+----------------------+-------|
          | 9-pin serial port 1 |  J3   | 40-pin IDE(AT)       |  J7   |
          | - external          |       | primary interface    |       |
          |                     |       | connector            |       |
          |---------------------+-------+----------------------+-------|
          | 16-pin game port -  |  J4   | Drive active LED     |  J8   |
          | internal            |       |                      |       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               USER CONFIGURABLE CONNECTIONS                |
          |------------------------------------------------------------|
          |             Function             | Location  |   Setting   |
          |----------------------------------+-----------+-------------|
          | » | Game port enabled            |    W14    |   Closed    |
          |---+------------------------------+-----------+-------------|
          |   | Game port disabled           |    W14    |    Open     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |              SERIAL PORT 1 ADDRESS SELECTION               |
          |------------------------------------------------------------|
          |     Setting      |         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  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |              SERIAL PORT 2 ADDRESS SELECTION               |
          |------------------------------------------------------------|
          |     Setting      |         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  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |              PARALLEL PORT ADDRESS SELECTION               |
          |------------------------------------------------------------|
          |     Setting      |         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  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |             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 SELECTION              |
          |------------------------------------------------------------|
          |          IRQ          |       W12        |       W13       |
          |-----------------------+------------------+-----------------|
          |     |      IRQ5       |      Closed      |      Open       |
          |-----+-----------------+------------------+-----------------|
          | »   |      IRQ7       |       Open       |     Closed      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               MISCELLANEOUS TECHNICAL NOTES                |
          |------------------------------------------------------------|
          | The parallel port on the DTC2278D+ only supports           |
          | bidirectional mode.                                        |
          +------------------------------------------------------------+