Re: A8N-SLI Start-up Problems

In article <1132838380.985791.240470@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
"beachnut" <hoochiegooch@xxxxxxxxxxx> wrote:

> If you mean the ATX12V, I did not have that connected, and just did.
> Thanks! Still no audio from the rear panel and no beeps or video. I
> now have power-off capability at the power switch by holding it down
> for a few seconds. Is that done by the BIOS, CPU, or mobo firmware?
>
> I'm gonna try floating the mobo later today.
>
> Thanks again!
>
> beachnut

The power off timer is inside the chipset. It isn't a function
of the processor, as such (the processor is not "counting to 4"
to do this).

For example, from the ICH5 Southbridge data***:

"Power Button: The Power Button will cause SMI# or SCI to
indicate a system request to go to a sleep state. If the system
is already in a sleep state, this signal will cause a wake event.
If PWRBTN# is pressed for more than 4 seconds, this will cause an
unconditional transition (power button override) to the S5 state.
Override will occur even if the system is in the S1-S4 states.
This signal has an internal pullup resistor."

When working on one of my motherboards, I've had both 4 second
shutoff and immediate shutoff. My guess would be, the immediate
shutoff case, is via the processor seeing the button press request.
The 4 second timer should work in any case, like if the processor
is hung.

A8N-SLI has "Vocal POST". If you plug amplified computer speakers
into the green connector on the back of the computer, you should
be hearing voice error messages. The Vocal POST function is
done by a dedicated chip that doesn't need the processor to
work. It can emit the "No processor" type message, based
on a pin in the socket not getting grounded by the inserted
processor. (That is how it knows there is no processor present.)
While the chip is autonomous, most of the time it is triggered
into action by a request from the processor, but certain events
early in the POST process, are done by the chip itself.

Look in your manual, for a table of error messages. The quality
of the voice message is so poor, you'll have to compare the
sounds to the text strings in the manual, to figure out what
it is saying :-)

Paul
.