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

   DTC2280 (400485-89C)

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

<gopher://bitreich.org/I/th99/c/C-D/21642-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |     Function      | Location |     Function     | Location |
   |-------------------+----------+------------------+----------|
   | 9-pin serial port |   CN1    | 10-pin serial    |   JP4    |
   | 1 - external      |          | port 2 -         |          |
   |                   |          | internal         |          |
   |-------------------+----------+------------------+----------|
   | 40-pin primary    |   JP1    | 34-pin cable     |   JP5    |
   | IDE(AT) connector |          | connector -      |          |
   |                   |          | floppy drive     |          |
   |-------------------+----------+------------------+----------|
   | 16-pin game port  |   JP2    | 2-pin connector  |   JP8    |
   |                   |          | - drive active   |          |
   |                   |          | LED              |          |
   |-------------------+----------+------------------+----------|
   | 10-pin serial     |   JP3    | 25-pin parallel  |   JP15   |
   | port 1 - internal |          | port - external  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Function                | Label | Position  |
   |----------------------------------------+-------+-----------|
   |>> | Floppy drive order is normal (A:,  | JP6/A | Pins 1 &  |
   |   | B:)                                |       | 2 closed  |
   |---+------------------------------------+-------+-----------|
   |   | Floppy drive order is reversed     | JP6/A | Pins 2 &  |
   |   | (B:, A:)                           |       | 3 closed  |
   |---+------------------------------------+-------+-----------|
   |>> | Floppy drive address 3F0h          | JP6/B | Pins 2 &  |
   |   |                                    |       | 3 closed  |
   |---+------------------------------------+-------+-----------|
   |   | Floppy drive address 370h          | JP6/B | Pins 1 &  |
   |   |                                    |       | 2 closed  |
   |---+------------------------------------+-------+-----------|
   |>> | IDE interface enabled              | JP6/C | Pins 1 &  |
   |   |                                    |       | 2 closed  |
   |---+------------------------------------+-------+-----------|
   |   | IDE interface disabled             | JP6/C | Pins 2 &  |
   |   |                                    |       | 3 closed  |
   |---+------------------------------------+-------+-----------|
   |>> | IDE address is 170h                | JP6/D | Pins 1 &  |
   |   |                                    |       | 2 closed  |
   |---+------------------------------------+-------+-----------|
   |   | IDE address is 1F0h                | JP6/D | Pins 2 &  |
   |   |                                    |       | 3 closed  |
   |---+------------------------------------+-------+-----------|
   |>> | Floppy drive interface enabled     | JP6/E | Pins 1 &  |
   |   |                                    |       | 2 closed  |
   |---+------------------------------------+-------+-----------|
   |   | Floppy drive interface disabled    | JP6/E | Pins 2 &  |
   |   |                                    |       | 3 closed  |
   |---+------------------------------------+-------+-----------|
   |>> | Game port enabled                  | JP16  |  Closed   |
   |---+------------------------------------+-------+-----------|
   |   | Game port disabled                 | JP16  |   Open    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                IDEIOR/IDEIOW PATH SELECTION                |
   |------------------------------------------------------------|
   |          Path          |    Label     |      Position      |
   |------------------------+--------------+--------------------|
   |>> |     ATBUS IOR      |      J1      | Pins 2 & 3 closed  |
   |---+--------------------+--------------+--------------------|
   |   |   W83758P--IOROP    |      J1      | Pins 1 & 2 closed  |
   |---+--------------------+--------------+--------------------|
   |>> |     ATBUS IOW      |      J2      | Pins 2 & 3 closed  |
   |---+--------------------+--------------+--------------------|
   |   |   W83758P--IOWOP    |      J2      | Pins 1 & 2 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              PARALLEL PORT ADDRESS SELECTION               |
   |------------------------------------------------------------|
   |     Setting      |       JP9/E        |       JP9/F        |
   |------------------+--------------------+--------------------|
   |>> | 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  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              SERIAL PORT 1 ADDRESS SELECTION               |
   |------------------------------------------------------------|
   |     Setting      |       JP9/A        |       JP9/B        |
   |------------------+--------------------+--------------------|
   |>> | 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      |       JP9/C        |       JP9/D        |
   |------------------+--------------------+--------------------|
   |>> | 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       |    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      |
   +------------------------------------------------------------+