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

   DTC2280 (400548-89A)

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

<gopher://bitreich.org/I/th99/c/C-D/21215-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |       Function       | Label |      Function       | Label |
   |----------------------+-------+---------------------+-------|
   | 34-pin control cable |  J1   | 9-pin serial port 1 |  J5   |
   | connector - floppy   |       | - external          |       |
   | drive                |       |                     |       |
   |----------------------+-------+---------------------+-------|
   | 40-pin IDE(AT)       |  J2   | 10-pin serial port  |  J6   |
   | interface connector  |       | 2 - internal        |       |
   |----------------------+-------+---------------------+-------|
   | Drive active LED     |  J3   | 25-pin parallel     |  J7   |
   |                      |       | port - external     |       |
   |----------------------+-------+---------------------+-------|
   | 16-pin game port -   |  J4   |                     |       |
   | internal             |       |                     |       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               USER CONFIGURABLE CONNECTIONS                |
   |------------------------------------------------------------|
   |             Function             | Location |   Setting    |
   |----------------------------------+----------+--------------|
   |>> | Factory configured - do not  |    W1    | Unidentified |
   |   | alter                        |          |              |
   |---+------------------------------+----------+--------------|
   |>> | Floppy drive interface       |    W2    |     Open     |
   |   | enabled                      |          |              |
   |---+------------------------------+----------+--------------|
   |   | Floppy drive interface       |    W2    |    Closed    |
   |   | disabled                     |          |              |
   |---+------------------------------+----------+--------------|
   |>> | Parallel port is             |    W3    |    Closed    |
   |   | uni-directional              |          |              |
   |---+------------------------------+----------+--------------|
   |   | Parallel port is             |    W3    |     Open     |
   |   | bi-directional               |          |              |
   |---+------------------------------+----------+--------------|
   |>> | Game port enabled            |    W4    |    Closed    |
   |---+------------------------------+----------+--------------|
   |   | Game port disabled           |    W4    |     Open     |
   |---+------------------------------+----------+--------------|
   |>> | Parallel port address is     |    W5    |     Open     |
   |   | 378h (LPT1)                  |          |              |
   |---+------------------------------+----------+--------------|
   |   | Parallel port address is 278 |    W5    |    Closed    |
   |   | (LPT2)                       |          |              |
   |---+------------------------------+----------+--------------|
   |>> | Serial port 1 address is     |    W6    |     Open     |
   |   | 3F8h                         |          |              |
   |---+------------------------------+----------+--------------|
   |   | Serial port 1 address is     |    W6    |    Closed    |
   |   | 3E8h                         |          |              |
   |---+------------------------------+----------+--------------|
   |>> | Serial port 1 enabled        |    W7    |     Open     |
   |---+------------------------------+----------+--------------|
   |   | Serial port 1 disabled       |    W7    |    Closed    |
   |---+------------------------------+----------+--------------|
   |>> | Parallel port enabled        |    W8    |     Open     |
   |---+------------------------------+----------+--------------|
   |   | Parallel port disabled       |    W8    |    Closed    |
   |---+------------------------------+----------+--------------|
   |>> | Serial port 1 address is     |    W9    |     Open     |
   |   | 2F8h                         |          |              |
   |---+------------------------------+----------+--------------|
   |   | Serial port 1 address is     |    W9    |    Closed    |
   |   | 2E8h                         |          |              |
   |---+------------------------------+----------+--------------|
   |>> | Serial port 2 enabled        |   W10    |     Open     |
   |---+------------------------------+----------+--------------|
   |   | Serial port 2 disabled       |   W10    |    Closed    |
   |---+------------------------------+----------+--------------|
   |>> | IDE(AT) interface enabled    |   W11    |     Open     |
   |---+------------------------------+----------+--------------|
   |   | IDE(AT) interface disabled   |   W11    |    Closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CONNECTIONS (CONTINUED)                   |
   |------------------------------------------------------------|
   |               Function                | Location | Setting |
   |---------------------------------------+----------+---------|
   |   | IDE(AT) interface address 170 -   |   W12    | Closed  |
   |   | 177h                              |          |         |
   |---+-----------------------------------+----------+---------|
   |   | IDE(AT) interface address 1F0 -   |   W12    |  Open   |
   |   | 1F7h                              |          |         |
   |---+-----------------------------------+----------+---------|
   |>> | IRQ 15 (secondary) disabled       |   W13    | Closed  |
   |---+-----------------------------------+----------+---------|
   |   | IRQ 15 (secondary) enabled        |   W13    |  Open   |
   |---+-----------------------------------+----------+---------|
   |>> | IRQ 14 (primary) enabled          |   W14    |  Open   |
   |---+-----------------------------------+----------+---------|
   |   | IRQ 14 (primary) disabled         |   W14    | Closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             SERIAL PORT 1 INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |      IRQ       |     W15      |     W16      |     W17     |
   |----------------+--------------+--------------+-------------|
   |   |    IRQ3    |     Open     |    Closed    |    Open     |
   |---+------------+--------------+--------------+-------------|
   |>> |    IRQ4    |    Closed    |     Open     |    Open     |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ5    |     Open     |     Open     |   Closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             SERIAL PORT 2 INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |      IRQ       |     W18      |     W19      |     W20     |
   |----------------+--------------+--------------+-------------|
   |>> |    IRQ3    |    Closed    |     Open     |    Open     |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ4    |     Open     |    Closed    |    Open     |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ5    |     Open     |     Open     |   Closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             PARALLEL PORT INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |          IRQ          |       W21        |       W22       |
   |-----------------------+------------------+-----------------|
   |     |      IRQ5       |       Open       |     Closed      |
   |-----+-----------------+------------------+-----------------|
   |>>   |      IRQ7       |      Closed      |      Open       |
   +------------------------------------------------------------+