Asus A7N266-E - Manual (Page 18)

18 ASUS A7N266-E User’s Manual
3. HARDWARE SETUP
3. H/W SETUP
Motherboard Settings
3) CPU:DRAM Frequency Setting (BSEL0, BSEL1)
This jumper sets the external CPU:DRAM frequency ratio for normal operation.
The default operates at 100:100 Mhz. Note: To make any changes to jumper
speed settings, the JEN jumper must be set to [1-2].
CPU DRAM BSEL0 BSEL1 JEN
133 133 [1-2] [1-2] [1-2]
133 100 [2-3] [1-2] [1-2]
100 133 [2-3] [2-3] [1-2]
100 100 [1-2] (Default) [2-3] (Default) [1-2]
A7N266-E
0 1 0 1 0 1
®
A7N266-E Jumper Mode Setting
JEN
Enable
(Default)
2 3
Disable
1 2
2) Jumperfree Setting (JEN)
Normally, all changes to frequency settings can be made through BIOS
immediately upon starting up the computer. Therefore, the default setting for
this jumper, [2-3] enables easy BIOS adjustments. If the BSEL jumpers are
used, it is necessary to set this JEN jumper to [1-2].
A7N266-E
0 1 0 1 0 1
®
A7N266-E CPU
External Frequency Selection
1 2
BSEL0
BSEL1
CPU 133MHz
(Default)
DRAM 133MHz
3 1 2
BSEL0
BSEL1
CPU 133MHz
DRAM 100MHz
3
1 2
BSEL0
BSEL1
CPU 100MHz
DRAM 133MHz
3 1 2
BSEL0
BSEL1
CPU 100MHz
DRAM 100MHz
3
JEN JEN
JEN JEN