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

   DTC2280 (VER.2)

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

<gopher://bitreich.org/I/th99/c/C-D/20535-1.png>
   

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

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |           Function           | Location |     Setting      |
   |------------------------------+----------+------------------|
   |>> | AT bus IDEIOR mode       |    J1    |    pins 2 & 3    |
   |   | enabled                  |          |      closed      |
   |---+--------------------------+----------+------------------|
   |   | W83758P IDEIOR mode      |    J1    |    pins 1 & 2    |
   |   | enabled                  |          |      closed      |
   |---+--------------------------+----------+------------------|
   |>> | AT bus IDEIOW mode       |    J2    |    pins 2 & 3    |
   |   | enabled                  |          |      closed      |
   |---+--------------------------+----------+------------------|
   |   | W83758P IDEIOW mode      |    J2    |    pins 1 & 2    |
   |   | enabled                  |          |      closed      |
   |---+--------------------------+----------+------------------|
   |>> | Floppy drives A & B      |  JP6/A   |    pins 1 & 2    |
   |   | normal                   |          |      closed      |
   |---+--------------------------+----------+------------------|
   |   | Floppy drives A & B      |  JP6/A   |    pins 2 & 3    |
   |   | reversed                 |          |      closed      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |           USER CONFIGURABLE SETTINGS(CONTINUED)            |
   |------------------------------------------------------------|
   |              Function              | Location |  Setting   |
   |------------------------------------+----------+------------|
   |>> | 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    |
   |---+--------------------------------+----------+------------|
   |>> | Hard drive interrupt is IRQ14  |   JP18   | pins 1 & 2 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | Hard drive interrupt is IRQ15  |   JP18   | pins 2 & 3 |
   |   |                                |          |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                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 2     |        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 ( BCh)  |  pins 1 & 2 closed  |  pins 1 & 2 closed  |
   |---+------------+---------------------+---------------------|
   |   |  Disabled  |  pins 2 & 3 closed  |  pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               SERIAL PORT 1 INTERRUPT SELECT               |
   |------------------------------------------------------------|
   |      IRQ       |    JP12/A    |    JP12/B    |   JP12/C    |
   |----------------+--------------+--------------+-------------|
   |>> |    IRQ4    |    closed    |     open     |    open     |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ3    |     open     |    closed    |    open     |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ5    |     open     |     open     |   closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               SERIAL PORT 2 INTERRUPT SELECT               |
   |------------------------------------------------------------|
   |      IRQ       |    JP12/D    |    JP12/E    |   JP12/F    |
   |----------------+--------------+--------------+-------------|
   |>> |    IRQ3    |    closed    |     open     |    open     |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ4    |     open     |    closed    |    open     |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ5    |     open     |     open     |   closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               PARALLEL PORT INTERRUPT SELECT               |
   |------------------------------------------------------------|
   |         IRQ          |      JP12/G      |      JP12/H      |
   |----------------------+------------------+------------------|
   |>>  |      IRQ7       |      closed      |       open       |
   |----+-----------------+------------------+------------------|
   |    |      IRQ5       |       open       |      closed      |
   +------------------------------------------------------------+