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

   DTC2278EB

   +------------------------------------------------------------+
   |------------------------------------------------------------|
   | Data bus:         | 32-bit VL-Bus                          |
   |-------------------+----------------------------------------|
   | Size:             | Three/quarter-length, half-height card |
   |-------------------+----------------------------------------|
   | Hard drive        | Four IDE(AT) or EIDE interface drives  |
   | supported:        |                                        |
   |-------------------+----------------------------------------|
   | Floppy drives     | Two 360KB, 720KB, 1.2MB, 1.44MB drives |
   | supported:        |                                        |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/c/C-D/20837-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |                    Function                    | Location  |
   |------------------------------------------------+-----------|
   | 10-pin serial port 2 - internal                |    J2     |
   |------------------------------------------------+-----------|
   | 9-pin serial port 1 - external                 |    J3     |
   |------------------------------------------------+-----------|
   | 16-pin game port                               |    J4     |
   |------------------------------------------------+-----------|
   | 34-pin cable connector - floppy drive          |    J5     |
   |------------------------------------------------+-----------|
   | 40-pin connector - secondary IDE(AT) interface |    J6     |
   |------------------------------------------------+-----------|
   | 40-pin connector - primary IDE(AT) interface   |    J7     |
   |------------------------------------------------+-----------|
   | 4-pin connector - drive active LED             |    J8     |
   |------------------------------------------------+-----------|
   | 25-pin parallel port - external                |    J9     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |            Function             |    Location    | Setting |
   |---------------------------------+----------------+---------|
   |>> | Game port enabled           |      W29       | closed  |
   |---+-----------------------------+----------------+---------|
   |   | Game port disabled          |      W29       |  open   |
   |---+-----------------------------+----------------+---------|
   |>> | Floppy controller enabled   | W30/pins 1 & 2 | closed  |
   |---+-----------------------------+----------------+---------|
   |   | Floppy controller disabled  | W30/pins 2 & 3 | closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   BIOS ADDRESS SELECTION                   |
   |------------------------------------------------------------|
   |     Address      |        W7         |     W8     |  W24   |
   |------------------+-------------------+------------+--------|
   |>> | C8000-CBFFFh | pins 2 & 3 closed | pins 2 & 3 | closed |
   |   |              |                   |   closed   |        |
   |---+--------------+-------------------+------------+--------|
   |   | CC000-CFFFFh | pins 2 & 3 closed | pins 1 & 2 | closed |
   |   |              |                   |   closed   |        |
   |---+--------------+-------------------+------------+--------|
   |   | D8000-DBFFFh | pins 1 & 2 closed | pins 2 & 3 | closed |
   |   |              |                   |   closed   |        |
   |---+--------------+-------------------+------------+--------|
   |   | DC000-DFFFFh | pins 1 & 2 closed | pins 1 & 2 | closed |
   |   |              |                   |   closed   |        |
   |---+--------------+-------------------+------------+--------|
   |   |   Disabled   |        N/A        |    N/A     |  open  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              PARALLEL PORT ADDRESS SELECTION               |
   |------------------------------------------------------------|
   |       LPT        |        W18         |        W19         |
   |------------------+--------------------+--------------------|
   |>> | LPT1 (378h)  | pins 2 & 3 closed  | pins 1 & 2 closed  |
   |---+--------------+--------------------+--------------------|
   |   | LPT2 (278h)  | pins 1 & 2 closed  | pins 1 & 2 closed  |
   |---+--------------+--------------------+--------------------|
   |   | LPT3 (3BCh)  | pins 1 & 2 closed  | pins 2 & 3 closed  |
   |---+--------------+--------------------+--------------------|
   |   |   Disabled   | pins 2 & 3 closed  | pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              SERIAL PORT 1 ADDRESS SELECTION               |
   |------------------------------------------------------------|
   |       COM        |        W22         |        W23         |
   |------------------+--------------------+--------------------|
   |>> | COM1 (3F8h)  | pins 1 & 2 closed  | pins 1 & 2 closed  |
   |---+--------------+--------------------+--------------------|
   |   | COM2 (2F8h)  | 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               |
   |------------------------------------------------------------|
   |       COM        |        W20         |        W21         |
   |------------------+--------------------+--------------------|
   |>> | COM2 (2F8h)  | pins 1 & 2 closed  | pins 1 & 2 closed  |
   |---+--------------+--------------------+--------------------|
   |   | COM1 (3F8h)  | 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       |     W15      |     W16      |     W17     |
   |----------------+--------------+--------------+-------------|
   |>> |    IRQ4    |     open     |     open     |   closed    |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ3    |     open     |    closed    |    open     |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ5    |    closed    |     open     |    open     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             SERIAL PORT 2 INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |      IRQ       |     W12      |     W13      |     W14     |
   |----------------+--------------+--------------+-------------|
   |>> |    IRQ3    |     open     |     open     |   closed    |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ4    |     open     |    closed    |    open     |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ5    |    closed    |     open     |    open     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             PARALLEL PORT INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |          IRQ          |       W10        |       W11       |
   |-----------------------+------------------+-----------------|
   |>>   |      IRQ7       |       open       |     closed      |
   |-----+-----------------+------------------+-----------------|
   |     |      IRQ5       |      closed      |      open       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              PARALLEL PORT MODE CONFIGURATION              |
   |------------------------------------------------------------|
   |         Mode          |     W9      |     W25     |  W31   |
   |-----------------------+-------------+-------------+--------|
   |        Printer        | pins 2 & 3  | pins 2 & 3  |  open  |
   |   (uni-directional)   |   closed    |   closed    |        |
   |-----------------------+-------------+-------------+--------|
   | EPP & bi-directional  | pins 1 & 2  | pins 2 & 3  |  open  |
   |                       |   closed    |   closed    |        |
   |-----------------------+-------------+-------------+--------|
   | ECP & bi-directional  | pins 2 & 3  | pins 1 & 2  | closed |
   |                       |   closed    |   closed    |        |
   |-----------------------+-------------+-------------+--------|
   |       EPP & ECP       | pins 1 & 2  | pins 1 & 2  | closed |
   |                       |   closed    |   closed    |        |
   |------------------------------------------------------------|
   | Note: You must select a DMA channel when using ECP mode.   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                       DMA SELECTION                        |
   |------------------------------------------------------------|
   |  Channel   |    W1     |    W2     |    W3     |    W4     |
   |------------+-----------+-----------+-----------+-----------|
   |     1      |  closed   |   open    |  closed   |   open    |
   |------------+-----------+-----------+-----------+-----------|
   |     3      |   open    |  closed   |   open    |  closed   |
   +------------------------------------------------------------+