(TXT) View Source
       
       # DTK COMPUTER, INC.
       
          MBVLSI-168 (V.2)
       
          Processor              80286                                   
          Processor Speed        8/12MHz                                 
          Chip Set               Unidentified                            
          Video Chip Set         None                                    
          Maximum Onboard Memory 4MB                                     
          Maximum Video Memory   None                                    
          Cache                  None                                    
          BIOS                   Unidentified                            
          Dimensions             330mm x 218mm                           
          I/O Options            None                                    
          NPU Options            80287                                   
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose           | Location | Purpose          | Location |
          |-------------------+----------+------------------+----------|
          | Reset switch      |   JP1    | Turbo switch     |   JP4    |
          |-------------------+----------+------------------+----------|
          | Power LED &       |   JP2    | Turbo LED        |   JP5    |
          | keylock           |          |                  |          |
          |-------------------+----------+------------------+----------|
          | Speaker           |   JP3    | External battery |   JP17   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function                | Label |  Position  |
          |---------------------------------------+-------+------------|
          | » | Factory configured - do not alter |  JP6  | Pins 1 & 2 |
          |   | (100ns memory)                    |       |   closed   |
          |---+-----------------------------------+-------+------------|
          |   | Wait state select 0 wait states   | JP10  |   Closed   |
          |---+-----------------------------------+-------+------------|
          |   | Wait state select 1 wait state    | JP10  |    Open    |
          |---+-----------------------------------+-------+------------|
          |   | BIOS type select 27256            | JP11  |   Closed   |
          |---+-----------------------------------+-------+------------|
          |   | BIOS type select 27128            | JP11  |    Open    |
          |---+-----------------------------------+-------+------------|
          |   | Monitor type select color         | JP12  |   Closed   |
          |---+-----------------------------------+-------+------------|
          |   | Monitor type select monochrome    | JP12  |    Open    |
          |---+-----------------------------------+-------+------------|
          | » | Power good signal detect from     | JP16  | Pins 1 & 2 |
          |   | board                             |       |   closed   |
          |---+-----------------------------------+-------+------------|
          |   | Power good signal detect from     | JP16  | Pins 2 & 3 |
          |   | power supply                      |       |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    DRAM CONFIGURATION 1                    |
          |------------------------------------------------------------|
          |  Size  |  Bank 0A   |  Parity 0  |  Bank 0B   |  Parity 1  |
          |--------+------------+------------+------------+------------|
          | 512KB  | (4) 44256  | (2) 41256  |    None    |    None    |
          |--------+------------+------------+------------+------------|
          |  1MB   | (4) 44256  | (2) 41256  | (4) 44256  | (2) 41256  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                DRAM JUMPER CONFIGURATION 1                 |
          |------------------------------------------------------------|
          |     Size     |      JP7      |     JP8      |     JP9      |
          |--------------+---------------+--------------+--------------|
          |    512KB     |    Closed     |    Closed    |    Closed    |
          |--------------+---------------+--------------+--------------|
          |     1MB      |    Closed     |     Open     |    Closed    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    DRAM CONFIGURATION 2                    |
          |------------------------------------------------------------|
          | Size  |   Bank 0    |  Parity 0  |   Bank 1   |  Parity 1  |
          |-------+-------------+------------+------------+------------|
          | 512KB | (16) 41256  | (2) 41256  |    None    |    None    |
          |-------+-------------+------------+------------+------------|
          | 640KB | (16) 41256  | (2) 41256  | (16) 4164  |  (2) 4164  |
          |-------+-------------+------------+------------+------------|
          |  1MB  | (16) 41256  | (2) 41256  | (16) 41256 | (2) 41256  |
          |-------+-------------+------------+------------+------------|
          |  2MB  | (16) 411000 | (2) 411000 |    None    |    None    |
          |-------+-------------+------------+------------+------------|
          |  4MB  | (16) 411000 | (2) 411000 |    (16)    | (2) 411000 |
          |       |             |            |   411000   |            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                DRAM JUMPER CONFIGURATION 2                 |
          |------------------------------------------------------------|
          |     Size     |      JP7      |     JP8      |     JP9      |
          |--------------+---------------+--------------+--------------|
          |    512KB     |    Closed     |    Closed    |    Closed    |
          |--------------+---------------+--------------+--------------|
          |    640KB     |    Closed     |    Closed    |     Open     |
          |--------------+---------------+--------------+--------------|
          |     1MB      |    Closed     |     Open     |    Closed    |
          |--------------+---------------+--------------+--------------|
          |     2MB      |    Closed     |     Open     |     Open     |
          |--------------+---------------+--------------+--------------|
          |     4MB      |     Open      |    Closed    |    Closed    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    DRAM CONFIGURATION 3                    |
          |------------------------------------------------------------|
          |       Size       |       Bank 2       |       Bank 3       |
          |------------------+--------------------+--------------------|
          |      512KB       |    (2) 256K x 9    |        None        |
          |------------------+--------------------+--------------------|
          |       1MB        |    (2) 256K x 9    |    (2) 256K x 9    |
          |------------------+--------------------+--------------------|
          |       2MB        |     (2) 1M x 9     |        None        |
          |------------------+--------------------+--------------------|
          |       4MB        |     (2) 1M x 9     |     (2) 1M x 9     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                DRAM JUMPER CONFIGURATION 3                 |
          |------------------------------------------------------------|
          |     Size     |      JP7      |     JP8      |     JP9      |
          |--------------+---------------+--------------+--------------|
          |    512KB     |    Closed     |    Closed    |    Closed    |
          |--------------+---------------+--------------+--------------|
          |     1MB      |    Closed     |     Open     |    Closed    |
          |--------------+---------------+--------------+--------------|
          |     2MB      |    Closed     |     Open     |     Open     |
          |--------------+---------------+--------------+--------------|
          |     4MB      |     Open      |    Closed    |    Closed    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                KEYBOARD BIOS PIN SELECTION                 |
          |------------------------------------------------------------|
          |  Setting   |   JP13    |   JP14    |   JP15    |   JP18    |
          |------------+-----------+-----------+-----------+-----------|
          |   Pin 23   |   Open    |  Closed   |   Open    |   Open    |
          |------------+-----------+-----------+-----------+-----------|
          |   Pin 27   |   Open    |   Open    |  Closed   |   Open    |
          |------------+-----------+-----------+-----------+-----------|
          |   Pin 30   |  Closed   |   Open    |   Open    |   Open    |
          |------------+-----------+-----------+-----------+-----------|
          |   Pin 32   |   Open    |   Open    |   Open    |  Closed   |
          +------------------------------------------------------------+