(TXT) View Source
       
       # PIONEER COMPUTER, INC.
       
          VANTAGE 486NC SX-20/25/33
       
          Processor   80486SX/ODP486SX                                   
          Processor   20/25/33/40(internal)/50(internal)/66(internal)MHz 
          Speed       
          Chip Set    OPTI                                               
          Max.        32MB                                               
          Onboard     
          DRAM        
          Cache       None                                               
          BIOS        Phoenix                                            
          Dimensions  240mm x 220mm                                      
          I/O Options None                                               
          NPU Options 80487SX                                            
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose        | Location | Purpose             | Location |
          |----------------+----------+---------------------+----------|
          | Turbo LED      |    J2    | Speaker             |    J5    |
          |----------------+----------+---------------------+----------|
          | Turbo switch   |    J3    | Power LED & keylock |    J6    |
          |----------------+----------+---------------------+----------|
          | Reset switch   |    J4    | External battery    |    J7    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function               | Jumper |  Position  |
          |--------------------------------------+--------+------------|
          | » | CMOS memory normal operation     |  JP3   | pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | CMOS memory clear                |  JP3   | pins 2 & 3 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | 80487SX or ODP486SX upgrade not  |  JP4   | pins 1 & 2 |
          |   | installed                        |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | 80487SX or ODP486SX upgrade      |  JP4   | pins 2 & 3 |
          |   | installed                        |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  JP6   |    Open    |
          |   | alter                            |        |            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     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) 1M x 9     |    (4) 256K x 9    |
          |------------------+--------------------+--------------------|
          |       8MB        |     (4) 1M x 9     |     (4) 1M x 9     |
          |------------------+--------------------+--------------------|
          |       16MB       |     (4) 4M x 9     |        NONE        |
          |------------------+--------------------+--------------------|
          |       32MB       |     (4) 4M x 9     |     (4) 4M x 9     |
          +------------------------------------------------------------+