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Power On issue - One button Start
BobA:
Just tap into the power on circuit where the wire ribbon goes to the actual switch. Thus you know you have the right contacts and don't have to figure out the ribbon conductors and mini boards. Shorting the 2 wires will cause the computer to turn on.
Zobeid:
--- Quote from: paigeoliver on May 01, 2008, 04:09:05 am ---A mame cab should never be in a situation where it is writing anything of import to disk, thus they are usually pretty safe just to flip the switch on.
--- End quote ---
The problem would be if MAME has written something (config, high scores) to the disk cache but it hasn't been written through to the actual disk yet. Then you cut the power and the data is lost. A normal shutdown would flush those caches.
Zobeid:
--- Quote from: BobA on May 01, 2008, 09:04:57 am ---Just tap into the power on circuit where the wire ribbon goes to the actual switch. Thus you know you have the right contacts and don't have to figure out the ribbon conductors and mini boards. Shorting the 2 wires will cause the computer to turn on.
--- End quote ---
If his system is like my Dell, he has no way of knowing (except trial and error, I guess?) which wires carry the power-switch signal. The actual switch on mine is buried deep in the front panel of the computer, and I couldn't find any way to dig it out without completely disassembling the computer and possibly inflicting major damage, so there's no way to trace the wires.
Since I got the replacement switch, now I can trace the wires and see which one does what.
paulscade:
In XP... turn off your disk write caching:
Device Manager --> Disk Drives --> Properties --> Policy
This way writes happen immediately... it shouldn't have much effect on performance on a MAME cab.
I think that paigeoliver said it right... aside from very short writes (high scores, updating play count, etc.), MAME isn't doing much disk writing.
... you'll feel better when you pull the plug (so to speak). :)
Ginsu Victim:
^This is what I did to mine and have had no issues.
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