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

   DTC2280E (400572-898)

   Data-bus                16-bit ISA                             
   Hard drives supported   Two IDE(AT) interface drives           
   Floppy drives supported Two 360KB, 720KB, 1.2MB, 1.44MB drives 
   Size                    Half-length, full-height card          

<gopher://bitreich.org/I/th99/c/C-D/21216-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |       Function       | Label |      Function       | Label |
   |----------------------+-------+---------------------+-------|
   | Unidentified         |  JP1  | 10-pin serial port  |  JP5  |
   |                      |       | 1 - internal        |       |
   |----------------------+-------+---------------------+-------|
   | 25-pin parallel port |  JP2  | 34-pin control      |  JP6  |
   | - external           |       | cable connector -   |       |
   |                      |       | floppy drive        |       |
   |----------------------+-------+---------------------+-------|
   | 16-pin game port -   |  JP3  | 40-pin IDE(AT)      |  JP7  |
   | internal             |       | interface connector |       |
   |----------------------+-------+---------------------+-------|
   | 10-pin serial port 2 |  JP4  | Drive active LED    |  JP8  |
   | - internal           |       |                     |       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               USER CONFIGURABLE CONNECTIONS                |
   |------------------------------------------------------------|
   |             Function             | Location |   Setting    |
   |----------------------------------+----------+--------------|
   |>> | Factory configured - do not  |    W2    | Unidentified |
   |   | alter                        |          |              |
   |---+------------------------------+----------+--------------|
   |>> | Factory configured - do not  |    W3    | Unidentified |
   |   | alter                        |          |              |
   |---+------------------------------+----------+--------------|
   |>> | Game port enabled            |    W7    |  Pins 1 & 2  |
   |   |                              |          |    closed    |
   |---+------------------------------+----------+--------------|
   |   | Game port disabled           |    W7    |  Pins 2 & 3  |
   |   |                              |          |    closed    |
   |---+------------------------------+----------+--------------|
   |>> | Parallel port IRQ7 enabled   |    W9    |  Pins 2 & 3  |
   |   |                              |          |    closed    |
   |---+------------------------------+----------+--------------|
   |   | Parallel port IRQ5 enabled   |    W9    |  Pins 1 & 2  |
   |   |                              |          |    closed    |
   |---+------------------------------+----------+--------------|
   |>> | Serial port 2 enabled        |   W12    |  Pins 1 & 2  |
   |   |                              |          |    closed    |
   |---+------------------------------+----------+--------------|
   |   | Serial port 2 disabled       |   W12    |  Pins 2 & 3  |
   |   |                              |          |    closed    |
   |---+------------------------------+----------+--------------|
   |>> | Parallel port address is     |   W13    |  Pins 1 & 2  |
   |   | 378h (LPT1)                  |          |    closed    |
   |---+------------------------------+----------+--------------|
   |   | Parallel port address is     |   W13    |  Pins 2 & 3  |
   |   | 278h (LPT2)                  |          |    closed    |
   |---+------------------------------+----------+--------------|
   |>> | Serial port 2 address is     |   W14    |  Pins 1 & 2  |
   |   | 2F8h (COM2)                  |          |    closed    |
   |---+------------------------------+----------+--------------|
   |   | Serial port 2 address is     |   W14    |  Pins 2 & 3  |
   |   | 2E8h (COM4)                  |          |    closed    |
   |---+------------------------------+----------+--------------|
   |>> | Floppy drive interface       |   W15    |  Pins 1 & 2  |
   |   | enabled                      |          |    closed    |
   |---+------------------------------+----------+--------------|
   |   | Floppy drive interface       |   W15    |  Pins 2 & 3  |
   |   | disabled                     |          |    closed    |
   |---+------------------------------+----------+--------------|
   |>> | IDE(AT) interface enabled    |   W16    |  Pins 1 & 2  |
   |   |                              |          |    closed    |
   |---+------------------------------+----------+--------------|
   |   | IDE(AT) interface disabled   |   W16    |  Pins 2 & 3  |
   |   |                              |          |    closed    |
   |---+------------------------------+----------+--------------|
   |>> | Serial port 1 enabled        |   W17    |  Pins 1 & 2  |
   |   |                              |          |    closed    |
   |---+------------------------------+----------+--------------|
   |   | Serial port 1 disabled       |   W17    |  Pins 2 & 3  |
   |   |                              |          |    closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CONNECTIONS (CONTINUED)                   |
   |------------------------------------------------------------|
   |              Function              | Location |  Setting   |
   |------------------------------------+----------+------------|
   |>> | Serial port 1 address is 3F8h  |   W19    | Pins 1 & 2 |
   |   | (COM1)                         |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | Serial port 1 address is 3E8h  |   W19    | Pins 2 & 3 |
   |   | (COM3)                         |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | IDE(AT) interface address 1F0  |   W20    | Pins 1 & 2 |
   |   | - 1F7h                         |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | IDE(AT) interface address 170  |   W20    | Pins 2 & 3 |
   |   | - 177h                         |          |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             SERIAL PORT 1 INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |    IRQ    |   W5/   |   W5/   |   W5/   |   W5/   |  W10   |
   |           |         |         |         |         |        |
   |           | pins 1  | pins 2  | pins 3  | pins 4  |        |
   |           |   & 3   |   & 4   |   & 5   |   & 6   |        |
   |-----------+---------+---------+---------+---------+--------|
   |>> | IRQ4  |   N/A   |   N/A   |   N/A   |   N/A   | Pins 2 |
   |   |       |         |         |         |         |  & 3   |
   |   |       |         |         |         |         | closed |
   |---+-------+---------+---------+---------+---------+--------|
   |   | IRQ5  |   N/A   |   N/A   |   N/A   |   N/A   | Pins 1 |
   |   |       |         |         |         |         |  & 2   |
   |   |       |         |         |         |         | closed |
   |---+-------+---------+---------+---------+---------+--------|
   |   | IRQ9  | Closed  |  Open   |  Open   |  Open   |  Open  |
   |---+-------+---------+---------+---------+---------+--------|
   |   | IRQ10 |  Open   |  Open   | Closed  |  Open   |  Open  |
   |---+-------+---------+---------+---------+---------+--------|
   |   | IRQ11 |  Open   | Closed  |  Open   |  Open   |  Open  |
   |---+-------+---------+---------+---------+---------+--------|
   |   | IRQ12 |  Open   |  Open   |  Open   | Closed  |  Open  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             SERIAL PORT 2 INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |    IRQ    |   W4/   |   W4/   |   W4/   |   W4/   |   W8   |
   |           |         |         |         |         |        |
   |           | pins 1  | pins 2  | pins 3  | pins 4  |        |
   |           |   & 3   |   & 4   |   & 5   |   & 6   |        |
   |-----------+---------+---------+---------+---------+--------|
   |>> | IRQ3  |   N/A   |   N/A   |   N/A   |   N/A   | Pins 2 |
   |   |       |         |         |         |         |  & 3   |
   |   |       |         |         |         |         | closed |
   |---+-------+---------+---------+---------+---------+--------|
   |   | IRQ4  |   N/A   |   N/A   |   N/A   |   N/A   | Pins 1 |
   |   |       |         |         |         |         |  & 2   |
   |   |       |         |         |         |         | closed |
   |---+-------+---------+---------+---------+---------+--------|
   |   | IRQ9  | Closed  |  Open   |  Open   |  Open   |  Open  |
   |---+-------+---------+---------+---------+---------+--------|
   |   | IRQ10 |  Open   |  Open   | Closed  |  Open   |  Open  |
   |---+-------+---------+---------+---------+---------+--------|
   |   | IRQ11 |  Open   | Closed  |  Open   |  Open   |  Open  |
   |---+-------+---------+---------+---------+---------+--------|
   |   | IRQ12 |  Open   |  Open   |  Open   | Closed  |  Open  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                IDE(AT) INTERRUPT SELECTION                 |
   |------------------------------------------------------------|
   |  IRQ  | W6/pins 1 & | W6/pins 2  | W6/pins 3  | W6/pins 4  |
   |       |      3      |    & 4     |    & 5     |    & 6     |
   |-------+-------------+------------+------------+------------|
   | IRQ11 |    Open     |    Open    |    Open    |   Closed   |
   |-------+-------------+------------+------------+------------|
   | IRQ12 |    Open     |   Closed   |    Open    |    Open    |
   |-------+-------------+------------+------------+------------|
   | IRQ14 |    Open     |    Open    |   Closed   |    Open    |
   |-------+-------------+------------+------------+------------|
   | IRQ15 |   Closed    |    Open    |    Open    |    OPen    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   DMA CHANNEL SELECTION                    |
   |------------------------------------------------------------|
   |    Channel     |   W1/A   |   W1/B   |   W1/C   |   W1/D   |
   |----------------+----------+----------+----------+----------|
   |       1        |   Open   |   Open   |  Closed  |  Closed  |
   |----------------+----------+----------+----------+----------|
   |       3        |  Closed  |  Closed  |   Open   |   Open   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                PARALLEL PORT MODE SELECTION                |
   |------------------------------------------------------------|
   |      Setting       |        W11        |        W18        |
   |--------------------+-------------------+-------------------|
   |   Bi-Directional   | Pins 1 & 2 closed | Pins 2 & 3 closed |
   |        /ECP        |                   |                   |
   |--------------------+-------------------+-------------------|
   |        EPP         | Pins 2 & 3 closed | Pins 1 & 2 closed |
   |--------------------+-------------------+-------------------|
   |  Uni-directional   | Pins 1 & 2 closed | Pins 1 & 2 closed |
   |--------------------+-------------------+-------------------|
   |      Disabled      | Pins 2 & 3 closed | Pins 2 & 3 closed |
   +------------------------------------------------------------+