(TXT) View Source
       
       # UNIDENTIFIED
       
          OPTI 486-25/33
       
          Processor    80486SX                                           
          Processor    25/33                                             
          Speed        
          Chip Set     OPTI                                              
          Max. Onboard 32MB                                              
          DRAM         
          Cache        64/128KB (external cache card)                    
          BIOS         AMI                                               
          Dimensions   330mm x 218mm                                     
          I/O Options  32-bit external memory card, 32-bit external      
                       cache card                                        
          NPU Options  4167                                              
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose          | Location | Purpose           | Location |
          |------------------+----------+-------------------+----------|
          | External battery |    J1    | Power LED &       |   J27    |
          |                  |          | keylock           |          |
          |------------------+----------+-------------------+----------|
          | Turbo LED        |   J25    | Reset switch      |   SW1    |
          |------------------+----------+-------------------+----------|
          | Speaker          |   J26    | 32-bit external   |   SL1    |
          |                  |          | memory card       |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |              Function               |  Jumper   | Position |
          |-------------------------------------+-----------+----------|
          | » | Monitor type select color       |    JP2    |  Closed  |
          |---+---------------------------------+-----------+----------|
          |   | Monitor type select monochrome  |    JP2    |   Open   |
          |---+---------------------------------+-----------+----------|
          | » | Cache enabled                   | JP5, JP6  |   Open   |
          |---+---------------------------------+-----------+----------|
          |   | Cache disabled                  | JP5, JP6  |  Closed  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          | Size |   Bank 0    |   Bank 1    |   Bank 2   |   Bank 3   |
          |------+-------------+-------------+------------+------------|
          | 1MB  | (4) 256K x  |    NONE     |    NONE    |    NONE    |
          |      |      9      |             |            |            |
          |------+-------------+-------------+------------+------------|
          | 2MB  | (4) 256K x  | (4) 256K x  |    NONE    |    NONE    |
          |      |      9      |      9      |            |            |
          |------+-------------+-------------+------------+------------|
          | 3MB  | (4) 256K x  | (4) 256K x  | (4) 256K x |    NONE    |
          |      |      9      |      9      |     9      |            |
          |------+-------------+-------------+------------+------------|
          | 4MB  | (4) 1M x 9  |    NONE     |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 4MB  | (4) 256K x  | (4) 256K x  | (4) 256K x | (4) 256K x |
          |      |      9      |      9      |     9      |     9      |
          |------+-------------+-------------+------------+------------|
          | 5MB  | (4) 256K x  | (4) 1M x 9  |    NONE    |    NONE    |
          |      |      9      |             |            |            |
          |------+-------------+-------------+------------+------------|
          | 6MB  | (4) 256K x  | (4) 256K x  | (4) 1M x 9 |    NONE    |
          |      |      9      |      9      |            |            |
          |------+-------------+-------------+------------+------------|
          | 7MB  | (4) 256K x  | (4) 256K x  | (4) 256K x | (4) 1M x 9 |
          |      |      9      |      9      |     9      |            |
          |------+-------------+-------------+------------+------------|
          | 8MB  | (4) 1M x 9  | (4) 1M x 9  |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 12MB | (4) 1M x 9  | (4) 1M x 9  | (4) 1M x 9 |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 16MB | (4) 4M x 9  |    NONE     |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 16MB | (4) 1M x 9  | (4) 1M x 9  | (4) 1M x 9 | (4) 1M x 9 |
          |------+-------------+-------------+------------+------------|
          | 32MB | (4) 4M x 9  | (4) 4M x 9  |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 36MB | (4) 4M x 9  | (4) 4M x 9  | (4) 1M x 9 |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 40MB | (4) 4M x 9  | (4) 4M x 9  | (4) 1M x 9 | (4) 1M x 9 |
          |------------------------------------------------------------|
          | Note:Banks 2 & 3 are located on the external memory card.. |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |          EXTERNAL CACHE CARD JUMPER CONFIGURATION          |
          |------------------------------------------------------------|
          |  Size   |  JP1   |     JP2     |   JP3   |  JP4   |  JP5   |
          |---------+--------+-------------+---------+--------+--------|
          |  64KB   | 1 & 2  |    Open     |  Open   | 1 & 2  | 1 & 2  |
          |---------+--------+-------------+---------+--------+--------|
          |  128KB  | 2 & 3  |   Closed    | Closed  | 2 & 3  | 2 & 3  |
          |------------------------------------------------------------|
          | Note:Pins designated should be in the closed position.     |
          | JP1-5 are located on the external cache card.              |
          +------------------------------------------------------------+