How to hold mobo in reset mode?

[JayPSC]

I've wired a toggle switch on the reset wire so that the circuit can be held on, but the mobo reboots itself every now & then, so it's obviously a bit more complex that that lol
Anyone have any ideas how vapo/prommie hold the board in reset mode so I can figure out how I'm gonna do it?

Cheers
Jay

[JayPSC]

Bump!

Someone must know

[Karnivore]

Which motherboard are you referencing? Unfortunately not all motherboards are able to hold the reset, because of this not all are compatible.

[JayPSC]

Trying this on a MSI K8N Neo Plat

Thanks
Jay

[Ragnarok]

Mach II's do not hold the reset, it sends a pulse to power-on when ever it reaches the boot up temp...

[Karnivore]

Originally posted by Ragnarok
Mach II's do not hold the reset, it sends a pulse to power-on when ever it reaches the boot up temp...


Since he specifically mentions hold reset, and a prom its pretty reasonable to assume Mach1, but yeah I know how the Mach2 works....



Sorry Jay, no idea on that partiular board, probably need to use a second supply.....

[cwatson]

Is there any circutry that can be made to simulate the effect of the mach II when using a mach I

[JayPSC]

Originally posted by Karnivore
Since he specifically mentions hold reset, and a prom its pretty reasonable to assume Mach1, but yeah I know how the Mach2 works....



Sorry Jay, no idea on that partiular board, probably need to use a second supply.....

Ahh no prob, have 2 psu's at the moment it's just a bit of a pain & seems silly to have a psu just powering 1 fan lol, might just have to get a small plug-in psu to run the fan.

Thanks
Jay

[Karnivore]

Yeah it is a pain, it shouldn't be that hard to do, I've been tossing around a couple ideas, one is to pulse the reset line while waiting for the prom to reach temps. If i ever get the time I may try to take it past the thinking stage..

[JayPSC]

Was thinking of the same method actually, should be easy enough to knock up the circuit

[Karnivore]

Originally posted by JayPSC
Was thinking of the same method actually, should be easy enough to knock up the circuit

Yeah it shouldn't be hard, I just always try to make it more complicated... Lol, I enjoy playing around with Micro controllers, and was thinking about redoing the prom controller using an Atmel or PIC since I have a bunch lying around...