Bakersor wrote on 2025-11-02, 14:00:

Hi guys
Anyone have the jumper manual for the Epox EP-S1C slocket? I dont know how to set them for a Celeron 566 MHz 🙁
Thanks in advance.

Not an exact match for your model but will likely work:

Hy guys i have the same Epox EP-S1C sloket, can somebody help me set it for a Intel Pentium III 600E on a DTK
PRM-0080I E1 motherboard ?

Did you check the document PARKE posted?

A P3-600E is an Intel CPU that runs at 100MHz FSB and usually wants 1.7 or 1.75V (exactly which depends on your stepping, look up or give us the S-Spec if you want to be 100% sure, otherwise assume 1.75V)

So JP1 should be set to 2-3 and JP2 to 1-2 to select 100MHz FSB.

As for voltage, that depends on your motherboard. If it has a VRM that supports Coppermine CPUs, the easiest option is to set SW1-6 to ON for auto. But if your motherboard doesn't support voltages below 1.8V, it won't boot if the CPU chooses a lower voltage. In that case you need to manually set the switches for 1.8V, i.e. SW1 1-5 to OFF-ON-OFF-ON-ON and SW1 6 OFF.

Now, what does your board support? The manual isn't explicit about the VRM spec version or capabilities. The pic on TheRetroWeb shows a Semtech SC1164CSW VRM controller - the little chip to the left of the CPU slot and below the inductor coil. Its datasheet states:

1.3V to 3.5V microprocessor supplies

- and goes on to show the typical Intel VRM VID table on page 4, matching the switch settings on your slocket.

So *if* your board has that exact chip and *if* DTK fully wired it up to the VID pins on the processor slot, 'auto' voltage setting should just work. If it doesn't, try manually setting 1.8V. I also see BIOS 3.18 is needed for Coppermine support, so it's probably a good idea to flash that BIOS before trying the P3-600E.

Yes i did it , thx.