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Chapter 2: Hardware information
2. CPU Core:Bus frequency multiple (SWITCH Switches 1-4)
This option sets the frequency multiple between the CPU internal and
external frequencies. This must be set in conjunction with the CPU Bus
Frequency.
Figure 2-23 CPU Core:Bus Frequency Multiple
P4B
®
SWITCH
8.0x
ON
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ON
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10.0x
ON
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11.0x
ON
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12.0x
13.0x
ON
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14.0x
ON
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15.0x
ON
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16.0x
ON
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17.0x
ON
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ON
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18.0x
ON
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19.0x
ON
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20.0x
21.0x
ON
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22.0x
ON
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23.0x
ON
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24.0x
ON
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P4B CPU Frequency
Multiple Selection
Make sure that the JEN jumper is set to jumper mode before setting
the above switches.
The option to set the CPU core:bus frequency multiple is available only
on unlocked CPUs. If you are using a locked CPU, setting the switches
does not produce any effect.