12
JP17, JP18: CPU Dual/Single Voltage Select
Single
Votage
Dual
Votage
Pentium P54C, K5,
6x86, IDT
MMX, 6x86L/6x86MX,
K6, K6-2, MII
JP17/JP18
3
1
CPU Type
3
1
Note:
Wrong setting of JP17/JP18 will damage the CPU.
Please double check before powering on the
system.
SW1: 4~6: Bus Ratio Select
SW1: 1~3: CPU Clock Setting
Set the SW1 jumper according to your CPU Bus Ratio and
CPU Clock.
ON
Off
6
5
4
Off
Off
On
On
On
On
1.5x or
3.5x
ON
6
5
4
Off
Off
2.0x
2.5x
3.0x
ON
6
5
4
Off
ON
Off
6
5
4
Off
SW1: 4~6
CPU Bus
Ratio Setting
On
On
Off
66MHz
75MHz
ON
3
2
1
ON
Off
3
2
1
On
On
83MHz
ON
Off
3
2
1
Off
Off
100MHz
ON
Off
3
2
1
Off
112MHz
ON
3
2
1
On
Off
95MHz
ON
On
On
On
Off
124MHz
ON
On
On
133MHz
ON
3
2
1
Off
On
On
3
2
1
Off
Off
CPU Bus
Ratio Setting
ON
6
5
4
Off
On
On
On
Off
On
Off
4.0x
ON
6
5
4
On
On
4.5x
5.0x
5.5x
ON
6
5
4
On
ON
Off
6
5
4
On
SW1: 4~6
CPU Bus
Ratio Setting
SW1: 1~3
Note:
Only the new clock generator supports 95MHz.
Please check with your dealer before using it.
