(TXT) View Source
       
       # COMPUSYSTEMS, INC.
       
          PEARL 4900
       
          Processor            80386DX                                   
          Processor Speed      33/40MHz                                  
          Chip Set             SIS                                       
          Max. Onboard DRAM    32MB                                      
          Cache                64/128/256KB                              
          BIOS                 AMI                                       
          Dimensions           330mm x 214mm                             
          I/O Options          None                                      
          NPU Options          80387/3167                                
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose             | Location | Purpose        | Location |
          |---------------------+----------+----------------+----------|
          | External battery    |   J10    | Speaker        |   J24    |
          |---------------------+----------+----------------+----------|
          | Turbo LED           |   J22    | Reset switch   |   SW1    |
          |---------------------+----------+----------------+----------|
          | Power LED & Keylock |   J23    | Turbo switch   |   SW2    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function               | Jumper |  Position  |
          |--------------------------------------+--------+------------|
          | » | Monitor type select monochrome   |  JP1   |    Open    |
          |---+----------------------------------+--------+------------|
          |   | Monitor type select color        |  JP1   |   Closed   |
          |---+----------------------------------+--------+------------|
          | » | CMOS memory normal operation     |  JP2   | pins 2 & 3 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | CMOS memory clear                |  JP2   | pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Bus speed select ATCLK/6         |  JP3   |    Open    |
          |---+----------------------------------+--------+------------|
          |   | Bus speed select ATCLK/8         |  JP3   |   Closed   |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  JP10  | pins 1 & 2 |
          |   | alter                            |        |   closed   |
          |------------------------------------------------------------|
          | Note:The location of JP3 is unidentified.                  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     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     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |    Size    |    Bank 0     |    Bank 1     |      Tag      |
          |------------+---------------+---------------+---------------|
          |    64KB    |  (4) 8K x 8   |  (4) 8K x 8   |  (3) 16K x 4  |
          |------------+---------------+---------------+---------------|
          |   128KB    |  (4) 32K x 8  |     NONE      |  (3) 16K x 4  |
          |------------+---------------+---------------+---------------|
          |   256KB    |  (4) 32K x 8  |  (4) 32K x 8  |  (3) 16K x 4  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          |   Size   |   JP5    |   JP6    |  JP7   |   JP8   |  JP9   |
          |----------+----------+----------+--------+---------+--------|
          |   64KB   |  2 & 3   |  1 & 2   | 1 & 2  |  Open   | 2 & 3  |
          |----------+----------+----------+--------+---------+--------|
          |  128KB   |  2 & 3   |  1 & 2   | 2 & 3  | Closed  | 2 & 3  |
          |----------+----------+----------+--------+---------+--------|
          |  256KB   |  2 & 3   |  2 & 3   | 2 & 3  | Closed  | 1 & 2  |
          |------------------------------------------------------------|
          | Note: Pins designated should be in the closed position.    |
          +------------------------------------------------------------+