Archived from groups: alt.comp.hardware.homebuilt (
More info?)
On Thu, 13 May 2004 14:12:07 GMT, Peale <nospam.apeale69@hotmail.com>
wrote:
>> What do you mean, "will it work"?
>> That was kinda the whole point of the link and modification, no?
>
>I know that it will turn the PS on. My question was if it would do any
>damage to the board if I did so.
>
No damage
>> It's not particularly difficult to do, try it and see for yourself.
>> The main problem might be if there's a very brief power disturbance,
>> long enough to crash the system but short enough to not reset it, then
>> the system will be stuck, crashed, instead of rebooting. If you
>> really need always-on then consider using an UPS too, but of course
>> NOT the UPS software since it can't very well turn the machine off if
>> the power supply is rigged to stay on.
>
>It's going into an arcade cabinet running MAME. I *can* use an AT board
>and power supply, but am very limited to how much speed I can use since
>very few AT boards are made these days. Hence, I have to use an ATX
>board.
Is MAME really needing that much performance? Lower performance setups
may also mean less heat, easier to cool, less airflow/dust/fan wear. I
suppose it's irrelevant though, since you already have the parts you want
to use.
>
>The system will be running DOS. It's also wired to a central switch
>which will turn on all the other things in the cabinet (marquee, arcade
>monitor, coin door lights) so if the PS is wired so it is on all the
>time, it won't matter.
>
>The cabinet is done with the exception of this one last piece, and I just
>want to get it right the first time, and not fry anything in the process.
It won't fry anything. You can test this youself though, by attaching a
load to the power supply (like a hard drive) then shorting the PS-On pin
you can confirm that the voltage levels are correct... that's all a power
supply is meant to do, supply those voltages within spec at varying
load... after you get the whole thing setup you ought to again measure
voltage levels to confirm that they're acceptable but it shouldn't be a
problem, just being extra cautious.