Re: Cheap motherboards that are PCI V2.2 compliant?

[Klaus Bahner <kgb@tcelectronic.dk>]

I can't give you a specific motherboard, but I would guess that an ATX board
*with* an AGP slot should also have 3.3V on the PCI slots, because the 3.3V supply

is mandatory on the AGP.
This is only my guess, but since we are facing the same problem with the 3.3V
supply, I tried to figure out some criterion to find a motherboard with 3.3V on
the PCI slot. Unfortunately, in most cases it isn't possible to tell from the
motherboard documentation whether it's 2.2 compatible or not.

Klaus



Neil McGann wrote:

> We are working on a PCI data aquisition card design that needs a V2.2
> compliant motherboard (PC based) - specifically, the 3.3V supply is necessary.
>
> I just got a cheap motherboard (ABIT BE6mk2 v1.1) to use as a lab test bed
> for our card. I made the dangerous assumption that since ATX form factor
> motherboards all have 3.3V in from the power supply it would be there on
> the PCI bus. WRONG!
>
> So, it looks like I need to get another motherboard (slot 1, 600MHz P3 with
> 133MHz FSB). Has anyone got any suggestions (based on UK availability)?
>
> Neil
>
> PS: I checked our target PCs for the finished product were 2.2 compliant
> before I designed the card, so it's not a long-term problem.
> --
> Neil McGann  Ceng MIEE
> The Technology Partnership PLC
> email: neil.mcgann@techprt.co.uk
> Tel:  01763 262626
> Fax: 01763 261582