They're strictly hardware. They basically just generate particular frequencies based on a reference clock (which usually comes from a 14.318mhz crystal somewhere nearby).

There was even a device back in the day, called a 'TurboPLL', which replaced that 14.318mhz reference clock with a variable oscillator to allow for fine tuning of overclocks, while retaining a couple specific fixed frequencies required by the RTC, I/O and USB ports.

Can somebody helps me with looking for service manual (or repair manual ) for Asus P2B-D? I need service manual, not user manual, with schemas and naming elements and contacs on this motherboard or variations Asus P2B-DS, etc.

I need to solve difference between Asus P2L97-DS (LX440) and Asus P2B-D (BX440) in case of slots organisation. I have both motherboards and they have different behaviour when one cpu in 2-d slot.

Filosofia wrote:

I've got this P2B-DS laying around and no idea what to do with it, its working with a couple 350 Deschutes and 2x256MB SDRAM... any ideas?

Create an BeOS Box. If you happen to have Soundblaster Live and Matrox G400 Dual-head, then it would be perfect.
I bought one such board, sadly DOA, lucky me there was a P2B-S in the haul.

YES! I really LOVE BeOS!

Which version, though? R5, Dano, Haiku?