(TXT) View Source
       
       # UNIDENTIFIED
       
          AC 486 MODEL PQFP
       
          Processor             80486SX/80487SX/80486DX/80486DX2         
          Processor Speed       16/20/25/33/50(internal)/66(internal)MHz 
          Chip Set              ACC                                      
          Max. Onboard DRAM     32MB                                     
          Cache                 None                                     
          BIOS                  AMI                                      
          Dimensions            254mm x 236mm                            
          I/O Options           None                                     
          NPU Options           None                                     
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose          | Location | Purpose           | Location |
          |------------------+----------+-------------------+----------|
          | External battery |    J1    | Reset switch      |    J4    |
          |------------------+----------+-------------------+----------|
          | Turbo LED        |    J2    | Speaker           |    J5    |
          |------------------+----------+-------------------+----------|
          | Turbo switch     |    J3    | Power LED &       |    J6    |
          |                  |          | keylock           |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |              Function              | Jumper |   Position   |
          |------------------------------------+--------+--------------|
          | » | Monitor type select monochrome |  JP2   |  pins 1 & 2  |
          |   |                                |        |    closed    |
          |---+--------------------------------+--------+--------------|
          | » | Monitor type select color      |  JP2   |  pins 2 & 3  |
          |   |                                |        |    closed    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |       Bank 1       |
          |------------------+--------------------+--------------------|
          |       1MB        |    (4) 256K x 9    |        NONE        |
          |------------------+--------------------+--------------------|
          |       2MB        |    (4) 256K x 9    |    (4) 256K x 9    |
          |------------------+--------------------+--------------------|
          |       4MB        |     (4) 1M x 9     |        NONE        |
          |------------------+--------------------+--------------------|
          |       5MB        |    (4) 256K x 9    |     (4) 1M x 9     |
          |------------------+--------------------+--------------------|
          |       8MB        |     (4) 1M x 9     |     (4) 1M x 9     |
          |------------------+--------------------+--------------------|
          |       16MB       |     (4) 4M x 9     |        NONE        |
          |------------------+--------------------+--------------------|
          |       20MB       |     (4) 1M x 9     |     (4) 4M x 9     |
          |------------------+--------------------+--------------------|
          |       32MB       |     (4) 4M x 9     |     (4) 4M x 9     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |   Type   |  JP3   |        JP4         |        JP5        |
          |----------+--------+--------------------+-------------------|
          | 80486SX  |  Open  | pins 2 & 3 closed  | pins 2 & 3 closed |
          |----------+--------+--------------------+-------------------|
          | 80487SX  | Closed | pins 1 & 2, 3 & 4  | pins 3 & 4 closed |
          |          |        |       closed       |                   |
          |----------+--------+--------------------+-------------------|
          | 80486DX  | Closed | pins 1 & 2, 3 & 4  | pins 1 & 2 closed |
          |          |        |       closed       |                   |
          |----------+--------+--------------------+-------------------|
          | 80486DX2 | Closed | pins 1 & 2, 3 & 4  | pins 1 & 2 closed |
          |          |        |       closed       |                   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CPU SPEED CONFIGURATION                   |
          |------------------------------------------------------------|
          |     Speed     |     JP6      |     JP7      |     JP8      |
          |---------------+--------------+--------------+--------------|
          |     16MHz     |    Closed    |    Closed    |    Closed    |
          |---------------+--------------+--------------+--------------|
          |     20MHz     |     Open     |    Closed    |    Closed    |
          |---------------+--------------+--------------+--------------|
          |     25MHz     |    Closed    |     Open     |    Closed    |
          |---------------+--------------+--------------+--------------|
          |     33MHz     |    Closed    |    Closed    |     Open     |
          |---------------+--------------+--------------+--------------|
          |    50iMHz     |    Closed    |     Open     |    Closed    |
          |---------------+--------------+--------------+--------------|
          |    66iMHz     |    Closed    |    Closed    |     Open     |
          +------------------------------------------------------------+