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       # PHILIPS CONSUMER ELECTRONICS, CO.
       
          E520
       
          Device Type      Mainboard                                     
          Processor        Pentium                                       
          Processor Speed  75/90/100/120/133/150/166MHz                  
          Chip Set         SIS                                           
          Video Chip Set   Unidentified                                  
          Maximum Onboard  128MB (EDO supported) Unified Memory          
          Memory           Architecture (UMA)                            
          Cache            256KB                                         
          BIOS             Unidentified                                  
          Dimensions       330mm x 218mm                                 
          I/O Options      Floppy drive interface, IDE interfaces (2),   
                           parallel port, PS/2 mouse port, serial ports  
                           (2), VGA feature connector, VGA port, riser   
                           slot                                          
          NPU Options      None                                          
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose         | Location | Purpose           | Location  |
          |-----------------+----------+-------------------+-----------|
          | VGA port        |   CN1    | VGA feature       |    CN9    |
          |                 |          | connector         |           |
          |-----------------+----------+-------------------+-----------|
          | Parallel port   |   CN2    | Power LED         | J12/pins  |
          |                 |          |                   |   1 - 3   |
          |-----------------+----------+-------------------+-----------|
          | Serial port 2   |   CN3    | Turbo LED         | J12/pins  |
          |                 |          |                   |  6 & 16   |
          |-----------------+----------+-------------------+-----------|
          | Serial port 1   |   CN4    | Reset switch      | J12/pins  |
          |                 |          |                   |  8 & 18   |
          |-----------------+----------+-------------------+-----------|
          | PS/2 mouse port |   CN5    | IDE interface LED | J12/pins  |
          |                 |          |                   |  10 & 20  |
          |-----------------+----------+-------------------+-----------|
          | Floppy drive    |   CN6    | Speaker           | J12/pins  |
          | interface       |          |                   |  11 - 14  |
          |-----------------+----------+-------------------+-----------|
          | IDE interface 2 |   CN7    | Riser slot        |    SL1    |
          |-----------------+----------+-------------------+-----------|
          | IDE interface 1 |   CN8    |                   |           |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |              Function               | Label |   Position   |
          |-------------------------------------+-------+--------------|
          | » | CMOS memory normal operation    | JP11  |  Pins 1 & 2  |
          |   |                                 |       |    closed    |
          |---+---------------------------------+-------+--------------|
          |   | CMOS memory clear               | JP11  |  Pins 2 & 3  |
          |   |                                 |       |    closed    |
          |---+---------------------------------+-------+--------------|
          | » | Factory configured - do not     | JP13  | Unidentified |
          |   | alter                           |       |              |
          |---+---------------------------------+-------+--------------|
          | » | Factory configured - do not     | JP14  | Unidentified |
          |   | alter                           |       |              |
          |---+---------------------------------+-------+--------------|
          | » | Factory configured - do not     | JP25  | Unidentified |
          |   | alter                           |       |              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |       Bank 1       |
          |------------------+--------------------+--------------------|
          |       8MB        |    (2) 1M x 36     |        None        |
          |------------------+--------------------+--------------------|
          |       16MB       |    (2) 2M x 36     |        None        |
          |------------------+--------------------+--------------------|
          |       16MB       |    (2) 1M x 36     |    (2) 1M x 36     |
          |------------------+--------------------+--------------------|
          |       24MB       |    (2) 2M x 36     |    (2) 1M x 36     |
          |------------------+--------------------+--------------------|
          |       32MB       |    (2) 4M x 36     |        None        |
          |------------------+--------------------+--------------------|
          |       32MB       |    (2) 2M x 36     |    (2) 2M x 36     |
          |------------------+--------------------+--------------------|
          |       40MB       |    (2) 4M x 36     |    (2) 1M x 36     |
          |------------------+--------------------+--------------------|
          |       48MB       |    (2) 4M x 36     |    (2) 2M x 36     |
          |------------------+--------------------+--------------------|
          |       64MB       |    (2) 8M x 36     |        None        |
          |------------------+--------------------+--------------------|
          |       64MB       |    (2) 4M x 36     |    (2) 4M x 36     |
          |------------------+--------------------+--------------------|
          |       72MB       |    (2) 8M x 36     |    (2) 1M x 36     |
          |------------------+--------------------+--------------------|
          |       80MB       |    (2) 8M x 36     |    (2) 2M x 36     |
          |------------------+--------------------+--------------------|
          |       96MB       |    (2) 8M x 36     |    (2) 4M x 36     |
          |------------------+--------------------+--------------------|
          |      128MB       |    (2) 8M x 36     |    (2) 8M x 36     |
          |------------------------------------------------------------|
          |      Note: Board accepts EDO memory.                       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |        TAG         |
          |------------------+--------------------+--------------------|
          |      256KB       |    (2) 32K x 32    |    (1) 16K x 8     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CPU SPEED SELECTION                     |
          |------------------------------------------------------------|
          |CPU speed|Clock speed|Multiplier| JP15 | JP16 | JP19 | JP20 |
          |---------+-----------+----------+------+------+------+------|
          |  75MHz  |   50MHz   |   1.5x   | Open | Open |Closed|Closed|
          |---------+-----------+----------+------+------+------+------|
          |  90MHz  |   60MHz   |   1.5x   | Open | Open | Open |Closed|
          |---------+-----------+----------+------+------+------+------|
          | 100MHz  |   66MHz   |   1.5x   | Open | Open |Closed| Open |
          |---------+-----------+----------+------+------+------+------|
          | 120MHz  |   60MHz   |    2x    |Closed| Open | Open |Closed|
          |---------+-----------+----------+------+------+------+------|
          | 133MHz  |   66MHz   |    2x    |Closed| Open |Closed| Open |
          |---------+-----------+----------+------+------+------+------|
          | 150MHz  |   60MHz   |   2.5x   |Closed|Closed| Open |Closed|
          |---------+-----------+----------+------+------+------+------|
          | 166MHz  |   66MHz   |   2.5x   |Closed|Closed|Closed| Open |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU VOLTAGE SELECTION                    |
          |------------------------------------------------------------|
          |    Voltage    |     JP5      |     JP6      |     JP7      |
          |---------------+--------------+--------------+--------------|
          |     3.3v      |    Closed    |     Open     |     Open     |
          |---------------+--------------+--------------+--------------|
          |     3.45v     |     Open     |    Closed    |     Open     |
          |---------------+--------------+--------------+--------------|
          |     3.6v      |     Open     |     Open     |    Closed    |
          +------------------------------------------------------------+