EPOX EP-6ZXM, Manual, Page: 75 / 76

Appendix
EP-6ZXM
A-11
Appendix D
CPU Clock Frequency Selection In BIOS Setting.
There is a special function for CPU over-clocking requirement which can be
chosen and set by BIOS or set by JP3 (The undocumented jumper setting from
103MHz to 133MHz), please refer to the following steps for adjustment.
1. Enter the BIOS CMOS setup program. (If your system was operated at
66MHz)
2. Choose “Chipset Features Setup” in main menu.
3. Use “Page down” (or+) / “Page up (or -) to choose CPU clock frequency
as one of 66.8, 75MHz and 83.3MHz.
(Note: There are 66.8, 75 and 83.3MHz for 66MHz pentium II CPU
CLOCK frequency show only).
4. Press “Save & Exit setup” to complete BIOS setting.
If screen becomes blank or system can’t boot anymore after above setting. that
means your CPU couldn’t be capable of supporting overclock, and you have to
follow the steps below to recover the CPU clock frequency.
Step 1: Power the system off. (J3 PW-ON)
Step 2: Press <INS> (Insert) key while powering on the system, system will
function with 66MHz external frequency at this moment which depends
on what kind of CPU on board.
Step 3: Please choose lower frequency and try again.
Warning:
We do not guarantee all CPUs can be over-clocked (When the undocumented set
by BIOS[75 and 83.3MHz] or by JP3[103 to 133MHz]), it depends on CPU
design and the peripherals you are using; it’s vitally important to use faster
peripherals (faster SDRAM, AGP, I/O card...) to come with the higher CPU clock
frequency.
Please set apporpriate CPU CLOCK frequency to make the system stable.