(TXT) View Source
       
       # FREE COMPUTER TECHNOLOGY, INC.
       
          80486VESA (03-0030X-02)
       
          Device Type  Mainboard                                         
          Processor    80486SX/80486SX2/80487SX/ODP486/80486DX/80486DX2/ 
                                                                         
                       80486DX3/P24T                                     
          Processor    20/25/33/40/50(internal)/50/66(internal)MHz       
          Speed        
          Chip Set     SIS 461                                           
          Video Chip   None                                              
          Set          
          Maximum      32MB                                              
          Onboard      
          Memory       
          Maximum      1MB                                               
          Video Memory 
          Cache        64/128/256KB                                      
          BIOS         Unidentified                                      
          Dimensions   254mm x 218mm                                     
          I/O Options  32-bit VESA local bus slots (3)                   
          NPU Options  None                                              
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose           | Location | Purpose          | Location |
          |-------------------+----------+------------------+----------|
          | External battery  |   JP1    | Reset switch     |   JP17   |
          |-------------------+----------+------------------+----------|
          | Power saving      |   JP2    | Turbo LED        |   JP18   |
          |-------------------+----------+------------------+----------|
          | Power saving      |   JP3    | Turbo switch     |   JP19   |
          |-------------------+----------+------------------+----------|
          | Speaker           |   JP15   | 32-bit VESA      |  SL1 –   |
          |                   |          | local bus slots  |   SL3    |
          |-------------------+----------+------------------+----------|
          | Power LED &       |   JP16   |                  |          |
          | keylock           |          |                  |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |              Function               | Label |   Position   |
          |-------------------------------------+-------+--------------|
          | » | Factory configured - do not     | JP21  | Unidentified |
          |   | alter                           |       |              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     SIMM 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) 1M x 9     |    (4) 256K x 9    |
          |------------------+--------------------+--------------------|
          |       8MB        |     (4) 1M x 9     |     (4) 1M x 9     |
          |------------------+--------------------+--------------------|
          |       16MB       |     (4) 4M x 9     |        None        |
          |------------------+--------------------+--------------------|
          |       17MB       |     (4) 4M x 9     |    (4) 256K x 9    |
          |------------------+--------------------+--------------------|
          |       20MB       |     (4) 1M x 9     |     (4) 4M x 9     |
          |------------------+--------------------+--------------------|
          |       20MB       |     (4) 4M x 9     |     (4) 1M x 9     |
          |------------------+--------------------+--------------------|
          |       32MB       |     (4) 4M x 9     |     (4) 4M x 9     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |   Size   |    Bank 0     |    Bank 1     |       TAG       |
          |----------+---------------+---------------+-----------------|
          |   64KB   |  (4) 8K x 8   |  (4) 8K x 8   |   (1) 8K x 8    |
          |----------+---------------+---------------+-----------------|
          |  128KB   |  (4) 32K x 8  |     None      |   (1) 8K x 8    |
          |----------+---------------+---------------+-----------------|
          |  256KB   |  (4) 32K x 8  |  (4) 32K x 8  | (1) 16K/32K x 8 |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          |       Size        |        JP11        |       JP12        |
          |-------------------+--------------------+-------------------|
          |       64KB        |        Open        |       Open        |
          |-------------------+--------------------+-------------------|
          |       128KB       | Pins 1 & 2 closed  |      Closed       |
          |-------------------+--------------------+-------------------|
          |       256KB       | Pins 2 & 3 closed  |      Closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CPU SPEED SELECTION                     |
          |------------------------------------------------------------|
          |     Speed     |     JP4      |     JP5      |     JP6      |
          |---------------+--------------+--------------+--------------|
          |     20MHz     |    Closed    |    Closed    |     Open     |
          |---------------+--------------+--------------+--------------|
          |     25MHz     |    Closed    |     Open     |    Closed    |
          |---------------+--------------+--------------+--------------|
          |     33MHz     |     Open     |    Closed    |    Closed    |
          |---------------+--------------+--------------+--------------|
          |     40MHz     |    Closed    |     Open     |     Open     |
          |---------------+--------------+--------------+--------------|
          |    50iMHz     |    Closed    |     Open     |    Closed    |
          |---------------+--------------+--------------+--------------|
          |     50MHz     |     Open     |    Closed    |     Open     |
          |---------------+--------------+--------------+--------------|
          |    66iMHz     |     Open     |    Closed    |    Closed    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     CPU TYPE SELECTION                     |
          |------------------------------------------------------------|
          |      Type      |          JP7          |        JP8        |
          |----------------+-----------------------+-------------------|
          |    80486SX     |   Pins 2 & 3 closed   |       Open        |
          |----------------+-----------------------+-------------------|
          |    80486SX2    |   Pins 1 & 2, 3 & 4   | Pins 2 & 3 closed |
          |                |        closed         |                   |
          |----------------+-----------------------+-------------------|
          |    80487SX     |   Pins 1 & 2, 3 & 4   | Pins 2 & 3 closed |
          |                |        closed         |                   |
          |----------------+-----------------------+-------------------|
          | ODP486 168-pin |   Pins 1 & 2, 3 & 4   | Pins 1 & 2 closed |
          |                |        closed         |                   |
          |----------------+-----------------------+-------------------|
          | ODP486 169-pin |   Pins 1 & 2, 3 & 4   | Pins 2 & 3 closed |
          |                |        closed         |                   |
          |----------------+-----------------------+-------------------|
          |    80486DX     |   Pins 1 & 2, 3 & 4   | Pins 1 & 2 closed |
          |                |        closed         |                   |
          |----------------+-----------------------+-------------------|
          |    80486DX2    |   Pins 1 & 2, 3 & 4   | Pins 1 & 2 closed |
          |                |        closed         |                   |
          |----------------+-----------------------+-------------------|
          |    80486DX3    |   Pins 1 & 2, 3 & 4   | Pins 1 & 2 closed |
          |                |        closed         |                   |
          |----------------+-----------------------+-------------------|
          |      P24T      |   Pins 1 & 2, 3 & 4   | Pins 2 & 3 closed |
          |                |        closed         |                   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                VL BUS WAIT STATE SELECTION                 |
          |------------------------------------------------------------|
          |            Setting            |            JP13            |
          |-------------------------------+----------------------------|
          |               0               |            Open            |
          |-------------------------------+----------------------------|
          |               1               |           Closed           |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   VL BUS SPEED SELECTION                   |
          |------------------------------------------------------------|
          |             Speed             |            JP14            |
          |-------------------------------+----------------------------|
          |           <= 33MHz            |            Open            |
          |-------------------------------+----------------------------|
          |            >33 MHz            |           Closed           |
          +------------------------------------------------------------+