On Wed, Jul 8, 2009 at 1:13 AM, Rudolf Marek <[email protected]> wrote:
> Hi, > > Please tell what superios are there. The pwrgood is sometimes involved. It > looks like a SIO thingie. smsc lpc47b397. On Tue, Jul 7, 2009 at 6:17 PM, Carl-Daniel Hailfinger < [email protected]> wrote: > I have no idea if the reset button directly triggers a reset line or > something similar on the processor, but it would be interesting to know: > 1. Does the power off also happen if you hold reset after the machine > has already been booted? (Do n seconds of reset always trigger a poweroff?) > No. After a few seconds of booting you can hold it in reset as long as you want. Since there is no output (no post codes either), I haven't been able to narrow it down. What I'm hoping is that it is some setting that can be saved by the device for the next boot. Otherwise I have to figure out a workaround, since I can't access the SuperIO before HT is initialized, and I need to hold the board in reset before HT is initialized. > 2. Which part of the board reacts to the held reset line and triggers > the poweroff? > I don't know. > 3. Is reset maybe somehow coupled to PWRGOOD and holding down reset is > perceived as electrical problem of the power supply? > Since #1 is no, I don't think so. Thanks, Myles
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