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

   DTC2280 (400485-89D)

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

<gopher://bitreich.org/I/th99/c/C-D/21089-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |       Function       | Label |      Function       | Label |
   |----------------------+-------+---------------------+-------|
   | 40-pin IDE(AT)       |  JP1  | 34-pin control      |  JP5  |
   | interface connector  |       | cable connector -   |       |
   |                      |       | floppy drive        |       |
   |----------------------+-------+---------------------+-------|
   | 16-pin game port -   |  JP2  | 2-pin connector -   |  JP8  |
   | internal             |       | drive active LED    |       |
   |----------------------+-------+---------------------+-------|
   | 9-pin serial port 1  |  JP3  | 25-pin parallel     | JP15  |
   | - external           |       | port - external     |       |
   |----------------------+-------+---------------------+-------|
   | 10-pin serial port 2 |  JP4  |                     |       |
   | - internal           |       |                     |       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function              | Location |  Setting   |
   |------------------------------------+----------+------------|
   |>> | AT bus IDE I/O Read path       |    J1    | Pins 2 & 3 |
   |   | enabled                        |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | W83758P IDE I/O Read path      |    J1    | Pins 1 & 2 |
   |   | enabled                        |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | AT bus IDE I/O Write path      |    J2    | Pins 2 & 3 |
   |   | enabled                        |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | W83758P IDE I/O Write path     |    J2    | Pins 1 & 2 |
   |   | enabled                        |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | Floppy drive order is normal   |  JP6/A   | Pins 1 & 2 |
   |   | (A:, B)                        |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | Floppy drive order is reversed |  JP6/A   | Pins 2 & 3 |
   |   | (B:, A)                        |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | Floppy drive interface address |  JP6/B   | Pins 2 & 3 |
   |   | 3F0 - 3F7h                     |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | Floppy drive interface address |  JP6/B   | Pins 1 & 2 |
   |   | 370 - 377h                     |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | IDE(AT) interface enabled      |  JP6/C   | Pins 1 & 2 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | IDE(AT) interface disabled     |  JP6/C   | Pins 2 & 3 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | IDE(AT) interface address 3F6, |  JP6/D   | Pins 2 & 3 |
   |   | 3F7, 1F0 - 1F7h                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | IDE(AT) interface address 376, |  JP6/D   | Pins 1 & 2 |
   |   | 377, 170 - 177h                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | Floppy drive interface enabled |  JP6/E   | Pins 1 & 2 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | Floppy drive interface         |  JP6/E   | Pins 2 & 3 |
   |   | disabled                       |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | Parallel port is               |   JP11   |    Open    |
   |   | bi-directional                 |          |            |
   |---+--------------------------------+----------+------------|
   |   | Parallel port is               |   JP11   |   Closed   |
   |   | unidirectional                 |          |            |
   |---+--------------------------------+----------+------------|
   |>> | Game port enabled              |   JP16   |   Closed   |
   |---+--------------------------------+----------+------------|
   |   | Game port disabled             |   JP16   |    Open    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                SERIAL PORT 1 CONFIGURATION                 |
   |------------------------------------------------------------|
   |     Port 1     |        JP9/A        |        JP9/B        |
   |----------------+---------------------+---------------------|
   |>> |    COM1    |  Pins 1 & 2 closed  |  Pins 2 & 3 closed  |
   |---+------------+---------------------+---------------------|
   |   |    COM3    |  Pins 2 & 3 closed  |  Pins 1 & 2 closed  |
   |---+------------+---------------------+---------------------|
   |   |    COM4    |  Pins 1 & 2 closed  |  Pins 1 & 2 closed  |
   |---+------------+---------------------+---------------------|
   |   |  Disabled  |  Pins 2 & 3 closed  |  Pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                SERIAL PORT 2 CONFIGURATION                 |
   |------------------------------------------------------------|
   |     Port 1     |        JP9/C        |        JP9/D        |
   |----------------+---------------------+---------------------|
   |>> |    COM2    |  Pins 1 & 2 closed  |  Pins 2 & 3 closed  |
   |---+------------+---------------------+---------------------|
   |   |    COM3    |  Pins 1 & 2 closed  |  Pins 1 & 2 closed  |
   |---+------------+---------------------+---------------------|
   |   |    COM4    |  Pins 2 & 3 closed  |  Pins 1 & 2 closed  |
   |---+------------+---------------------+---------------------|
   |   |  Disabled  |  Pins 2 & 3 closed  |  Pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                PARALLEL PORT CONFIGURATION                 |
   |------------------------------------------------------------|
   |      LPT       |        JP9/E        |        JP9/F        |
   |----------------+---------------------+---------------------|
   |>> |  1 (378h)  |  Pins 2 & 3 closed  |  Pins 1 & 2 closed  |
   |---+------------+---------------------+---------------------|
   |   |  2 (278h)  |  Pins 1 & 2 closed  |  Pins 2 & 3 closed  |
   |---+------------+---------------------+---------------------|
   |   |  3 (3BCh)  |  Pins 1 & 2 closed  |  Pins 1 & 2 closed  |
   |---+------------+---------------------+---------------------|
   |   |  Disabled  |  Pins 2 & 3 closed  |  Pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             SERIAL PORT 1 INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |      IRQ       |    JP12/A    |    JP12/B    |   JP12/C    |
   |----------------+--------------+--------------+-------------|
   |>> |    IRQ4    |    Closed    |     Open     |    Open     |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ3    |     Open     |    Closed    |    Open     |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ5    |     Open     |     Open     |   Closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             SERIAL PORT 2 INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |      IRQ       |    JP12/D    |    JP12/E    |   JP12/F    |
   |----------------+--------------+--------------+-------------|
   |>> |    IRQ3    |    Closed    |     Open     |    Open     |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ4    |     Open     |    Closed    |    Open     |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ5    |     Open     |     Open     |   Closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             PARALLEL PORT INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |          IRQ          |      JP12/G      |     JP12/H      |
   |-----------------------+------------------+-----------------|
   |>>   |      IRQ7       |      Closed      |      Open       |
   |-----+-----------------+------------------+-----------------|
   |     |      IRQ5       |       Open       |     Closed      |
   +------------------------------------------------------------+