(TXT) View Source
       
       # UNIDENTIFIED
       
          ALI 386SX MAINBOARD
       
          Processor          80386SX/CX486SLC                            
          Processor Speed    16/20/25/33MHz                              
          Chip Set           None                                        
          Max. Onboard DRAM  16MB                                        
          SRAM Cache         None                                        
          BIOS               AMI                                         
          Dimensions         216mm x 170mm                               
          I/O Options        None                                        
          NPU Options        80387SX                                     
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose          | Location | Purpose           | Location |
          |------------------+----------+-------------------+----------|
          | External battery |    J4    | Turbo switch &    |    J8    |
          |                  |          | LED               |          |
          |------------------+----------+-------------------+----------|
          | Reset switch     |    J6    | Power LED &       |    J9    |
          |                  |          | keylock           |          |
          |------------------+----------+-------------------+----------|
          | Speaker          |    J7    |                   |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function               | Jumper |  Position  |
          |--------------------------------------+--------+------------|
          | » | ADS signal delay disabled        |   J5   | pins 2 & 3 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | ADS signal delay enabled         |   J5   | pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | NPU mode select synchronous with |  JP2   | pins 1 & 2 |
          |   | CPU                              |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | NPU mode select asynchronous     |  JP2   | pins 2 & 3 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | RTC type select 146816           |  JP3   |    open    |
          |---+----------------------------------+--------+------------|
          |   | RTC type select DS1287           |  JP3   |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Monitor type select monochrome   |  JP4   |    open    |
          |---+----------------------------------+--------+------------|
          |   | Monitor type select color        |  JP4   |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Parity check enabled             |  JP6   |    open    |
          |---+----------------------------------+--------+------------|
          |   | Parity check disabled            |  JP6   |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  BUS CLOCK CONFIGURATION                   |
          |------------------------------------------------------------|
          |    CPU Speed     |        JP1         |        JP5         |
          |------------------+--------------------+--------------------|
          |      33MHz       | pins 2 & 3 closed  | pins 2 & 3 closed  |
          |------------------+--------------------+--------------------|
          |      25MHz       | pins 1 & 2 closed  | pins 1 & 2 closed  |
          |------------------+--------------------+--------------------|
          |      20MHz       | pins 2 & 3 closed  | pins 1 & 2 closed  |
          |------------------+--------------------+--------------------|
          |      16MHz       | pins 1 & 2 closed  | pins 1 & 2 closed  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |       Bank 1       |
          |------------------+--------------------+--------------------|
          |      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     |
          |------------------+--------------------+--------------------|
          |       8MB        |     (2) 4M x 9     |        NONE        |
          |------------------+--------------------+--------------------|
          |       16MB       |     (2) 4M x 9     |     (2) 4M x 9     |
          +------------------------------------------------------------+