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

   DTC2278E (400518-89W)

   Card Type            Hard drive controller card                
   Hard Drives          Four EIDE drives                          
   supported            
   Floppy drives        Two 360KB, 720KB, 1.2MB, or 1.44MB drives 
   supported            
   Data Bus             32-bit VESA Local Bus                     
   Card Size            Full-length, half-height card             

<gopher://bitreich.org/I/th99/c/C-D/21641-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |     Function      | Location |     Function     | Location |
   |-------------------+----------+------------------+----------|
   | 9-pin serial port |   CN1    | 40-pin secondary |    J3    |
   | 1 - external      |          | IDE(AT)          |          |
   |                   |          | connector        |          |
   |-------------------+----------+------------------+----------|
   | 25-pin parallel   |   CN2    | 34-pin cable     |    J4    |
   | port - external   |          | connector -      |          |
   |                   |          | floppy drive     |          |
   |-------------------+----------+------------------+----------|
   | 2-pin connector - |    J1    | 16-pin game port |    J5    |
   | drive active LED  |          |                  |          |
   |-------------------+----------+------------------+----------|
   | 40-pin primary    |    J2    | 10-pin serial    |    J7    |
   | IDE(AT) connector |          | port 2 -         |          |
   |                   |          | internal         |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Function                | Label | Position  |
   |----------------------------------------+-------+-----------|
   |>> | Floppy drive order is normal (A:,  |  W26  | Pins 1 &  |
   |   | B:)                                |       | 2 closed  |
   |---+------------------------------------+-------+-----------|
   |   | Floppy drive order is reversed     |  W26  | Pins 2 &  |
   |   | (B:, A:)                           |       | 3 closed  |
   |---+------------------------------------+-------+-----------|
   |>> | Floppy drive address 3F0-3F7       |  W27  | Pins 2 &  |
   |   |                                    |       | 3 closed  |
   |---+------------------------------------+-------+-----------|
   |   | Floppy drive address 370-377       |  W27  | Pins 1 &  |
   |   |                                    |       | 2 closed  |
   |---+------------------------------------+-------+-----------|
   |>> | Floppy drive interface enabled     |  W28  | Pins 1 &  |
   |   |                                    |       | 2 closed  |
   |---+------------------------------------+-------+-----------|
   |   | Floppy drive interface disabled    |  W28  | Pins 2 &  |
   |   |                                    |       | 3 closed  |
   |---+------------------------------------+-------+-----------|
   |>> | Game port enabled                  |  W46  |  Closed   |
   |---+------------------------------------+-------+-----------|
   |   | Game port disabled                 |  W46  |   Open    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              PARALLEL PORT ADDRESS SELECTION               |
   |------------------------------------------------------------|
   |     Setting      |        W24         |        W25         |
   |------------------+--------------------+--------------------|
   |>> | LPT1 (378h)  | Pins 2 & 3 closed  | Pins 1 & 2 closed  |
   |---+--------------+--------------------+--------------------|
   |   | LPT2 (278h)  | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
   |---+--------------+--------------------+--------------------|
   |   | LPT3 (3BCh)  | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
   |---+--------------+--------------------+--------------------|
   |   |   Disabled   | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              SERIAL PORT 1 ADDRESS SELECTION               |
   |------------------------------------------------------------|
   |     Setting      |        W20         |        W21         |
   |------------------+--------------------+--------------------|
   |>> | COM1 (3F8h)  | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
   |---+--------------+--------------------+--------------------|
   |   | COM3 (3E8h)  | Pins 2 & 3 closed  | Pins 1 & 2 closed  |
   |---+--------------+--------------------+--------------------|
   |   |   Disabled   | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              SERIAL PORT 2 ADDRESS SELECTION               |
   |------------------------------------------------------------|
   |     Setting      |        W22         |        W23         |
   |------------------+--------------------+--------------------|
   |>> | COM2 (2F8h)  | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
   |---+--------------+--------------------+--------------------|
   |   | COM4 (2E8h)  | Pins 2 & 3 closed  | Pins 1 & 2 closed  |
   |---+--------------+--------------------+--------------------|
   |   |   Disabled   | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             SERIAL PORT 1 INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |      IRQ       |     W35      |     W36      |     W37     |
   |----------------+--------------+--------------+-------------|
   |>> |    IRQ4    |    Closed    |     Open     |    Open     |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ3    |     Open     |    Closed    |    Open     |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ5    |     Open     |     Open     |   Closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             SERIAL PORT 2 INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |      IRQ       |     W38      |     W39      |     W40     |
   |----------------+--------------+--------------+-------------|
   |>> |    IRQ3    |    Closed    |     Open     |    Open     |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ4    |     Open     |    Closed    |    Open     |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ5    |     Open     |     Open     |   Closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             PARALLEL PORT INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |          IRQ          |       W41        |       W42       |
   |-----------------------+------------------+-----------------|
   |>>   |      IRQ7       |      Closed      |      Open       |
   |-----+-----------------+------------------+-----------------|
   |     |      IRQ5       |       Open       |     Closed      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                PARALLEL PORT MODE SELECTION                |
   |------------------------------------------------------------|
   |     Setting      |        W29         |        W30         |
   |------------------+--------------------+--------------------|
   |   Printer mode   | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
   |------------------+--------------------+--------------------|
   |     EPP/SPP      | Pins 2 & 3 closed  | Pins 1 & 2 closed  |
   |------------------+--------------------+--------------------|
   |     EPP/ECP      | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |     EXT2FDD      | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 ECP DMA CHANNEL SELECTION                  |
   |------------------------------------------------------------|
   |      Channel       |      Label       |      Position      |
   |--------------------+------------------+--------------------|
   |         1          |       W31        | Pins 1 & 2 closed  |
   |--------------------+------------------+--------------------|
   |         3          |       W31        | Pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  PRINTER OUTPUT DIRECTION                  |
   |------------------------------------------------------------|
   |    Setting     |     W43      |     W44      |     W45     |
   |----------------+--------------+--------------+-------------|
   |     Output     |    Closed    |     Open     |    Open     |
   |----------------+--------------+--------------+-------------|
   | Bi-directional |     Open     |     Open     |    Open     |
   |----------------+--------------+--------------+-------------|
   |  DACK1 (DRQ1)  |     Open     |    Closed    |    Open     |
   |----------------+--------------+--------------+-------------|
   |  DACK3 (DRQ3)  |     Open     |     Open     |   Closed    |
   +------------------------------------------------------------+