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

   DTC2X77VL

   Data Bus             32-bit VESA Local Bus                     
   Card Size            Three-quarter length, full-height card    
   Hard Drives          Four IDE (AT) drives                      
   supported            
   Floppy drives        Two 360KB, 720KB, 1.2MB, or 1.44MB drives 
   supported            

<gopher://bitreich.org/I/th99/c/C-D/21033-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |     Function      | Location |     Function     | Location |
   |-------------------+----------+------------------+----------|
   | 40-pin primary    |   JP1    | 34-pin cable     |   JP3    |
   | IDE(AT) connector |          | connector -      |          |
   |                   |          | floppy drive     |          |
   |-------------------+----------+------------------+----------|
   | 40-pin secondary  |   JP2    | Connector -      |   JP1    |
   | IDE(AT) connector |          | drive active LED |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Function                 | Label | Position |
   |-----------------------------------------+-------+----------|
   |>> | Floppy drive interface enabled      | JP2/4 |  Closed  |
   |---+-------------------------------------+-------+----------|
   |   | Floppy drive interface disabled     | JP2/4 |   Open   |
   |---+-------------------------------------+-------+----------|
   |>> | Hard drive primary I/O address      | JP2/5 |  Closed  |
   |   | select                              |       |          |
   |---+-------------------------------------+-------+----------|
   |   | Hard drive secondary I/O address    | JP2/5 |   Open   |
   |   | select                              |       |          |
   |---+-------------------------------------+-------+----------|
   |>> | Factory configured - do not alter   | JP2/6 |  Closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   BIOS ADDRESS SELECTION                   |
   |------------------------------------------------------------|
   |      Address      | JP2/pins 1 & | JP2/pins 3 | JP2/pins 5 |
   |                   |      2       |    & 4     |    & 6     |
   |-------------------+--------------+------------+------------|
   |   | C8000h-CBFFFh |    Closed    |    Open    |    Open    |
   |---+---------------+--------------+------------+------------|
   |   | CC000h-CEFFEh |     Open     |   Closed   |    Open    |
   |---+---------------+--------------+------------+------------|
   |   | D0000h-D3FFEh |    Closed    |   Closed   |    Open    |
   |---+---------------+--------------+------------+------------|
   |   | D4000h-D7EEEh |     Open     |    Open    |   Closed   |
   |---+---------------+--------------+------------+------------|
   |   | D8000h-DBFFFh |    Closed    |    Open    |   Closed   |
   |---+---------------+--------------+------------+------------|
   |>> | DC000h-DEFFFh |    Closed    |   Closed   |   Closed   |
   |---+---------------+--------------+------------+------------|
   |   |   Disabled    |     Open     |    Open    |    Open    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |    Size    |        Bank 0         |        Bank 1         |
   |------------+-----------------------+-----------------------|
   |   512KB    |      (2) 256 x 9      |         None          |
   |------------+-----------------------+-----------------------|
   |    1KB     |      (2) 256 x 9      |      (2) 256 x 9      |
   |------------+-----------------------+-----------------------|
   |   1.5KB    |      (2) 256 x 9      |      (2) 1MB x 9      |
   |------------+-----------------------+-----------------------|
   |    2MB     |      (2) 1MB x 9      |         None          |
   |------------+-----------------------+-----------------------|
   |   2.5MB    |      (2) 1MB x 9      |      (2) 256 x 9      |
   |------------+-----------------------+-----------------------|
   |    4MB     |      (2) 1MB x 9      |      (2) 1MB x 9      |
   |------------+-----------------------+-----------------------|
   |    8MB     |      (2) 4MB x 9      |         None          |
   |------------+-----------------------+-----------------------|
   |   8.5MB    |      (2) 4MB x 9      |      (2) 256 x 9      |
   |------------+-----------------------+-----------------------|
   |   8.5MB    |      (2) 256 x 9      |      (2) 4MB x 9      |
   |------------+-----------------------+-----------------------|
   |    10MB    |      (2) 1MB x 9      |      (2) 4MB x 9      |
   |------------+-----------------------+-----------------------|
   |    10MB    |      (2) 4MB x 9      |      (2) 1MB x 9      |
   |------------+-----------------------+-----------------------|
   |    16MB    |      (2) 4MB x 9      |      (2) 4MB x 9      |
   +------------------------------------------------------------+