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          

<gopher://bitreich.org/I/th99/c/C-D/21218-1.png>
   

   +------------------------------------------------------------+
   |                        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.                                        |
   +------------------------------------------------------------+