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EEPROM FLASH BLOCK LOCK (JP6)
Placing jumper cap on Pin2-3 allows you to flash your BIOS.
Pin 2-3
(Default- You may Flash BIOS)
Pin 1-2
(Lock BIOS Flash)
A1
CPU Frequency Ratio Configuration (JP4)
AV18 mainboard provides a jumper group JP4 to set CPU frequency ratio
configuration by BIOS or by hardware jumper. By inserting mini jumpers on
JP4 properly, the user can configure the CPU Clock Ratio manually.
Note:
Normally, JP4 is a backup function because for all the processors on
market nowadays the ratio setting is alomst fixed.
A2
Frequency
Ratio
1-2
3-4
5-6
7-8
3 x
ON
OFF
ON
ON
3.5 x
ON
OFF
OFF
ON
4 x
OFF
ON
ON
ON
4.5 x
OFF
ON
OFF
ON
5 x
OFF
OFF
ON
ON
5.5 x
OFF
OFF
OFF
ON
6 x
ON
ON
ON
OFF
6.5 x
ON
ON
OFF
OFF
7 x
ON
OFF
ON
OFF
7.5 x
ON
OFF
OFF
OFF
8 x
OFF
ON
ON
OFF
Factory Default
OFF
OFF
OFF
OFF
JP6
1
JP4
2
4
6
8
1
3
5
7
