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       # PACKARD BELL
       
          PB635
       
          Processor             80286                                    
          Processor Speed       12MHz                                    
          Chip Set              C & T                                    
          Max. Onboard DRAM     1MB                                      
          Cache                 None                                     
          BIOS                  MH                                       
          Dimensions            330mm x 218mm                            
          I/O Options           None                                     
          NPU Options           80287                                    
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose             | Location | Purpose        | Location |
          |---------------------+----------+----------------+----------|
          | Reset switch        |    J1    | Speaker        |    J3    |
          |---------------------+----------+----------------+----------|
          | Keylock             |    J2    |                |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function               | Jumper |  Position  |
          |--------------------------------------+--------+------------|
          | » | NPU mode select synchronous with |  J19   | pins 1 & 2 |
          |   | CPU                              |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | NPU mode select asynchronous     |  J19   | pins 2 & 3 |
          |   | with CPU                         |        |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |  Size   |    Bank 0    |   Bank 1   |  Bank 2   |  Bank 3  |
          |---------+--------------+------------+-----------+----------|
          |  512KB  |  (18) 41256  |    NONE    |   NONE    |   NONE   |
          |---------+--------------+------------+-----------+----------|
          |   1MB   |  (18) 41256  | (18) 41256 |   NONE    |   NONE   |
          |---------+--------------+------------+-----------+----------|
          |   2MB   |  (18) 41256  | (18) 41256 | (2) 256K  | (2) 256K |
          |         |              |            |    x 9    |   x 9    |
          |---------+--------------+------------+-----------+----------|
          |   3MB   |  (18) 41256  | (18) 41256 | (2) 1M x  |   NONE   |
          |         |              |            |     9     |          |
          |---------+--------------+------------+-----------+----------|
          |   5MB   |  (18) 41256  | (18) 41256 | (2) 1M x  | (2) 1M x |
          |         |              |            |     9     |    9     |
          |------------------------------------------------------------|
          | Note:Banks 2 & 3 are used when an external memory card is  |
          | installed.                                                 |
          +------------------------------------------------------------+