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

   DTC2278EB (400529-89A)

   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/21643-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |     Function      | Location |     Function     | Location |
   |-------------------+----------+------------------+----------|
   | 25-pin parallel   |   CN2    | 40-pin secondary |    J6    |
   | port - external   |          | IDE(AT)          |          |
   |                   |          | connector        |          |
   |-------------------+----------+------------------+----------|
   | 10-pin serial     |    J2    | 40-pin primary   |    J7    |
   | port 2 - internal |          | IDE(AT)          |          |
   |                   |          | connector        |          |
   |-------------------+----------+------------------+----------|
   | 16-pin game port  |    J4    | 2-pin connector  |    J8    |
   |                   |          | - drive active   |          |
   |                   |          | LED              |          |
   |-------------------+----------+------------------+----------|
   | 34-pin cable      |    J5    |                  |          |
   | connector -       |          |                  |          |
   | floppy drive      |          |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Function                | Label | Position  |
   |----------------------------------------+-------+-----------|
   |>> | Game port enabled                  |  W6   |  Closed   |
   |---+------------------------------------+-------+-----------|
   |   | Game port disabled                 |  W6   |   Open    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 ECP DMA CHANNEL SELECTION                  |
   |------------------------------------------------------------|
   |    Channel     |    W1    |    W2    |    W3    |    W4    |
   |----------------+----------+----------+----------+----------|
   |       1        |  Closed  |   Open   |  Closed  |   Open   |
   |----------------+----------+----------+----------+----------|
   |       3        |   Open   |  Closed  |   Open   |  Closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              PARALLEL PORT ADDRESS SELECTION               |
   |------------------------------------------------------------|
   |     Setting      |        W19         |        W20         |
   |------------------+--------------------+--------------------|
   |   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 ADDRESS SELECTION               |
   |------------------------------------------------------------|
   |     Setting      |        W23         |        W24         |
   |------------------+--------------------+--------------------|
   |   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      |        W21         |        W22         |
   |------------------+--------------------+--------------------|
   |   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  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   BIOS ADDRESS SELECTION                   |
   |------------------------------------------------------------|
   |  Address  |  W18   |        W27        |        W28        |
   |-----------+--------+-------------------+-------------------|
   |  DC000h   | Closed | Pins 1 & 2 closed | Pins 1 & 2 closed |
   |-----------+--------+-------------------+-------------------|
   |  D8000h   | Closed | Pins 1 & 2 closed | Pins 2 & 3 closed |
   |-----------+--------+-------------------+-------------------|
   |  CC000h   | Closed | Pins 2 & 3 closed | Pins 1 & 2 closed |
   |-----------+--------+-------------------+-------------------|
   |  C8000h   | Closed | Pins 2 & 3 closed | Pins 2 & 3 closed |
   |-----------+--------+-------------------+-------------------|
   | Disabled  |  Open  |       Open        |       Open        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             SERIAL PORT 1 INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |     IRQ      |     W12      |      W13      |     W14      |
   |--------------+--------------+---------------+--------------|
   |     IRQ4     |     Open     |     Open      |    Closed    |
   |--------------+--------------+---------------+--------------|
   |     IRQ3     |     Open     |    Closed     |     Open     |
   |--------------+--------------+---------------+--------------|
   |     IRQ5     |    Closed    |     Open      |     Open     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             SERIAL PORT 2 INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |     IRQ      |      W9      |      W10      |     W11      |
   |--------------+--------------+---------------+--------------|
   |     IRQ3     |     Open     |     Open      |    Closed    |
   |--------------+--------------+---------------+--------------|
   |     IRQ4     |     Open     |    Closed     |     Open     |
   |--------------+--------------+---------------+--------------|
   |     IRQ5     |    Closed    |     Open      |     Open     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             PARALLEL PORT INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |        IRQ        |         W7         |        W8         |
   |-------------------+--------------------+-------------------|
   |       IRQ7        |        Open        |      Closed       |
   |-------------------+--------------------+-------------------|
   |       IRQ5        |       Closed       |       Open        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                PARALLEL PORT MODE SELECTION                |
   |------------------------------------------------------------|
   |      Setting       |        W15        |        W16        |
   |--------------------+-------------------+-------------------|
   |  Uni-directional   | Pins 2 & 3 closed | Pins 2 & 3 closed |
   |--------------------+-------------------+-------------------|
   |     ECP & EPP      | Pins 1 & 2 closed | Pins 2 & 3 closed |
   |--------------------+-------------------+-------------------|
   |       EPP &        | Pins 2 & 3 closed | Pins 1 & 2 closed |
   |   Bi-Directional   |                   |                   |
   |--------------------+-------------------+-------------------|
   |      Invalid       | Pins 1 & 2 closed | Pins 1 & 2 closed |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               MISCELLANEOUS TECHNICAL NOTES                |
   |------------------------------------------------------------|
   | Floppy is automatically enabled when cable is attached     |
   +------------------------------------------------------------+