CONTROL CONCEPTS
================

   TRIFECTA

   Data Bus      16-bit ISA                                       
   Card Size     Half-length, full-height card                    
   Hard Drives   Two IDE (AT) drives                              
   supported                                                      
                 Up to 7 SCSI devices                             
   Floppy drives Two 360KB, 720KB, 1.2MB, or 1.44MB drives        
   supported     (optional four drives)                           
                                                                  

<gopher://bitreich.org/I/th99/c/C-D/21028-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |    Function    | Location |      Function       | Location |
   |----------------+----------+---------------------+----------|
   | 50-pin SCSI    |    J1    | 4-pin connector -   |    J8    |
   | connector -    |          | drive active LED    |          |
   | external       |          |                     |          |
   |----------------+----------+---------------------+----------|
   | 50-pin SCSI    |    J2    | 34-pin cable        |    J9    |
   | connector -    |          | connector - floppy  |          |
   | internal       |          | drive               |          |
   |----------------+----------+---------------------+----------|
   | 40-pin IDE(AT) |    J3    | 34-pin cable        |   J10    |
   | connector      |          | connector - floppy  |          |
   |                |          | drive (optional)    |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Function                 | Label | Position |
   |-----------------------------------------+-------+----------|
   |>> | Not used                            |  J4   |   N/A    |
   |---+-------------------------------------+-------+----------|
   |>> | IDE(AT) interface enabled           |  J5   |   Open   |
   |---+-------------------------------------+-------+----------|
   |   | IDE(AT) interface disabled          |  J5   |  Closed  |
   |---+-------------------------------------+-------+----------|
   |>> | Floppy drive interface enabled      |  J6   |  Closed  |
   |---+-------------------------------------+-------+----------|
   |   | Floppy drive interface disabled     |  J6   |   Open   |
   |---+-------------------------------------+-------+----------|
   |>> | Not used                            |  J7   |   N/A    |
   |---+-------------------------------------+-------+----------|
   |>> | Board I/O address is 1E0-1EFh       | SW1/4 |   Off    |
   |---+-------------------------------------+-------+----------|
   |   | Board I/O address is 3E0-3EFh       | SW1/4 |    On    |
   |---+-------------------------------------+-------+----------|
   |   | Control Concepts SCSI drive         | SW1/8 |   Off    |
   |   | formatting mode select              |       |          |
   |---+-------------------------------------+-------+----------|
   |   | Industry Standards SCSI drive       | SW1/8 |    On    |
   |   | formatting mode select              |       |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   BIOS ADDRESS SELECTION                   |
   |------------------------------------------------------------|
   |      Address       |    SW1/1    |   SW1/2    |   SW1/3    |
   |--------------------+-------------+------------+------------|
   |    C4000-C7FFFh    |     On      |    Off     |    Off     |
   |--------------------+-------------+------------+------------|
   |    C8000-CBFFFh    |     Off     |     On     |     On     |
   |--------------------+-------------+------------+------------|
   |    CC000-CFFFFh    |     Off     |    Off     |    Off     |
   |--------------------+-------------+------------+------------|
   |    D0000-D3FFFh    |     On      |    Off     |    Off     |
   |--------------------+-------------+------------+------------|
   |    D4000-D7FFFh    |     Off     |     On     |    Off     |
   |--------------------+-------------+------------+------------|
   |    D8000-DBFFFh    |     On      |     On     |    Off     |
   |--------------------+-------------+------------+------------|
   |    DC000-DFFFFh    |     Off     |    Off     |     On     |
   |--------------------+-------------+------------+------------|
   |      Disabled      |     On      |     On     |     On     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     SCSI ID SELECTION                      |
   |------------------------------------------------------------|
   |     Setting      |    SW1/5    |    SW1/6    |    SW1/7    |
   |------------------+-------------+-------------+-------------|
   |    |      0      |     On      |     On      |     On      |
   |----+-------------+-------------+-------------+-------------|
   |    |      1      |     Off     |     On      |     On      |
   |----+-------------+-------------+-------------+-------------|
   |    |      2      |     On      |     Off     |     On      |
   |----+-------------+-------------+-------------+-------------|
   |    |      3      |     Off     |     Off     |     On      |
   |----+-------------+-------------+-------------+-------------|
   |    |      4      |     On      |     On      |     Off     |
   |----+-------------+-------------+-------------+-------------|
   |    |      5      |     Off     |     On      |     Off     |
   |----+-------------+-------------+-------------+-------------|
   |    |      6      |     On      |     Off     |     Off     |
   |----+-------------+-------------+-------------+-------------|
   |>>  |      7      |     Off     |     Off     |     Off     |
   +------------------------------------------------------------+