Aptiva 1xx and 3xx System Jumper Settings

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Descriptions and Settings

All notations correspond to the diagram below.

System Board Bus Speed

Jumper JP2

50 MHz

1-3, 2-4

60 MHz

1-3, 4-6

66.6 MHz

3-5, 4-6


Multiplication

Jumper JP3

Jumper JP25

1.5 x

1-3

1-2

2 x

1-3, 2-4

1-2

2.5 x

1-3, 2-4

2-3


Sytem Board Layout - Type I-2

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Note that  75 MHz = 1.5 *  50  MHz                                      
           90 MHz = 1.5 *  60  MHz                                      
          100 MHZ = 1.5 * 66.6 MHz                                      
          120 MHz =  2  *  60  MHz                                      
          133 MHz =  2  * 66.6 MHz                                      
          150 MHz = 2.5 *  60  MHz                                      
          166 MHz = 2.5 * 66.6 MHz                                      
          200 MHz =  3  * 66.6 MHz (which is impossible with this board)

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