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

   DTC2280+ (400542-89A)

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

<gopher://bitreich.org/I/th99/c/C-D/20832-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |                Function                |     Location      |
   |----------------------------------------+-------------------|
   | 40-pin IDE(AT) interface connector     |        J1         |
   |----------------------------------------+-------------------|
   | 34-pin cable connector - floppy drive  |        J2         |
   |----------------------------------------+-------------------|
   | 9-pin serial port 1 - external         |        J3         |
   |----------------------------------------+-------------------|
   | 10-pin serial port 2 - internal        |        J4         |
   |----------------------------------------+-------------------|
   | 25-pin parallel port - external        |        J5         |
   |----------------------------------------+-------------------|
   | 16-pin game port - internal            |        J6         |
   |----------------------------------------+-------------------|
   | 2-pin connector - drive active LED     |        JP8        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function              | Location |  Setting   |
   |------------------------------------+----------+------------|
   |>> | Floppy drives A & B normal     |  JP6/1   | pins 1 & 2 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | Floppy drives A & B reversed   |  JP6/1   | pins 2 & 3 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | Floppy drive interface address |  JP6/2   | pins 2 & 3 |
   |   | is 3F0h                        |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | Floppy drive interface address |  JP6/2   | pins 1 & 2 |
   |   | is 370h                        |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | IDE(AT) interface enabled      |  JP6/3   | pins 1 & 2 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | IDE(AT) interface disabled     |  JP6/3   | pins 2 & 3 |
   |   |                                |          |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |           USER CONFIGURABLE SETTINGS(CONTINUED)            |
   |------------------------------------------------------------|
   |              Function              | Location |  Setting   |
   |------------------------------------+----------+------------|
   |>> | IDE(AT) interface address is   |  JP6/4   | pins 2 & 3 |
   |   | 1F0h                           |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | IDE(AT) interface address is   |  JP6/4   | pins 1 & 2 |
   |   | 170h                           |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | Floppy drive interface enabled |  JP6/5   | pins 1 & 2 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | Floppy drive interface         |  JP6/5   | pins 2 & 3 |
   |   | disabled                       |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | Game port enabled              |   JP16   |   closed   |
   |---+--------------------------------+----------+------------|
   |   | Game port disabled             |   JP16   |    open    |
   |---+--------------------------------+----------+------------|
   |>> | Factory configured - do not    |   JP17   |    N/A     |
   |   | alter                          |          |            |
   |---+--------------------------------+----------+------------|
   |>> | Factory configured - do not    |   JP18   |    N/A     |
   |   | alter                          |          |            |
   |---+--------------------------------+----------+------------|
   |>> | Hard drive interrupt IRQ14     |   JP19   | pins 1 & 2 |
   |   | select                         |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | Hard drive interrupt IRQ15     |   JP19   | pins 2 & 3 |
   |   | select                         |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | Factory configured - do not    |   JP20   |    N/A     |
   |   | alter                          |          |            |
   |---+--------------------------------+----------+------------|
   |>> | Factory configured - do not    |   JP24   |    N/A     |
   |   | alter                          |          |            |
   |---+--------------------------------+----------+------------|
   |>> | Factory configured - do not    |   JP25   |    N/A     |
   |   | alter                          |          |            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                SERIAL PORT 1 CONFIGURATION                 |
   |------------------------------------------------------------|
   |     Port 1     |        JP9/1        |        JP9/2        |
   |----------------+---------------------+---------------------|
   |>> |    COM1    |  pins 1 & 2 closed  |  pins 2 & 3 closed  |
   |---+------------+---------------------+---------------------|
   |   |    COM3    |  pins 2 & 3 closed  |  pins 1 & 2 closed  |
   |---+------------+---------------------+---------------------|
   |   |  Disabled  |  pins 2 & 3 closed  |  pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                SERIAL PORT 2 CONFIGURATION                 |
   |------------------------------------------------------------|
   |     Port 2     |        JP9/3        |        JP9/4        |
   |----------------+---------------------+---------------------|
   |>> |    COM2    |  pins 1 & 2 closed  |  pins 2 & 3 closed  |
   |---+------------+---------------------+---------------------|
   |   |    COM4    |  pins 2 & 3 closed  |  pins 1 & 2 closed  |
   |---+------------+---------------------+---------------------|
   |   |  Disabled  |  pins 2 & 3 closed  |  pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                PARALLEL PORT CONFIGURATION                 |
   |------------------------------------------------------------|
   |      LPT       |        JP9/5        |        JP9/6        |
   |----------------+---------------------+---------------------|
   |>> |  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  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             SERIAL PORT 1 INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |      IRQ       |    JP12/1    |    JP12/2    |   JP12/3    |
   |----------------+--------------+--------------+-------------|
   |>> |    IRQ4    |    closed    |     open     |    open     |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ3    |     open     |    closed    |    open     |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ5    |     open     |     open     |   closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             SERIAL PORT 2 INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |      IRQ       |    JP12/4    |    JP12/5    |   JP12/6    |
   |----------------+--------------+--------------+-------------|
   |>> |    IRQ3    |    closed    |     open     |    open     |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ4    |     open     |    closed    |    open     |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ5    |     open     |     open     |   closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             PARALLEL PORT INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |         IRQ          |      JP12/7      |      JP12/8      |
   |----------------------+------------------+------------------|
   |>>    |       7       |      closed      |       open       |
   |------+---------------+------------------+------------------|
   |>>    |       5       |       open       |      closed      |
   +------------------------------------------------------------+