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       # SER
       
          386-AD3
       
          Processor         80386DX/CX486DLC                             
          Processor Speed   33/40MHz                                     
          Chip Set          ALI                                          
          Max. Onboard DRAM 32MB                                         
          Cache             32/128KB                                     
          BIOS              AMI                                          
          Dimensions        220mm x 220mm                                
          I/O Options       None                                         
          NPU Options       80387DX                                      
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose           | Location | Purpose          | Location |
          |-------------------+----------+------------------+----------|
          | Power LED &       |   CN1    | Turbo LED        |   CN4    |
          | keylock           |          |                  |          |
          |-------------------+----------+------------------+----------|
          | Speaker           |   CN2    | Reset switch     |   CN5    |
          |-------------------+----------+------------------+----------|
          | Turbo switch      |   CN3    | External battery |    J1    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function                | Jumper  | Position |
          |---------------------------------------+---------+----------|
          | » | Factory configured - do not alter |   JP1   |   Open   |
          |---+-----------------------------------+---------+----------|
          | » | Factory configured - do not alter |   JP2   |   Open   |
          |---+-----------------------------------+---------+----------|
          | » | Factory configured - do not alter |  JP10   |   Open   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     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       |        TAG         |
          |------------------+--------------------+--------------------|
          |       32KB       |     (4) 8K x 8     |     (1) 8K x 8     |
          |------------------+--------------------+--------------------|
          |      128KB       |    (4) 32K x 8     |     (1) 8K x 8     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          | Size  |  JP6   |          JP8          |        JP9        |
          |-------+--------+-----------------------+-------------------|
          | 32KB  |  Open  |         Open          | pins 2 & 3 closed |
          |-------+--------+-----------------------+-------------------|
          | 128KB | Closed |   pins 1 & 2, 3 & 4   | pins 1 & 2 closed |
          |       |        |        closed         |                   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |       Type       |        JP3         |        JP7         |
          |------------------+--------------------+--------------------|
          |     80386DX      | pins 1 & 2 closed  | pins 1 & 2 closed  |
          |------------------+--------------------+--------------------|
          |     CX486DLC     | pins 2 & 3 closed  | pins 2 & 3 closed  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CPU SPEED CONFIGURATION                   |
          |------------------------------------------------------------|
          |       Speed       |         J4         |        J5         |
          |-------------------+--------------------+-------------------|
          |       33MHz       |        Open        |      Closed       |
          |-------------------+--------------------+-------------------|
          |       40MHz       |       Closed       |       Open        |
          +------------------------------------------------------------+