Capturing changes on the screen

[Generic Eric]

I'm trying to get a better idea of how to implement mamehooker.  Say I wanted a LED to flash the underside of my control panel or part of my marquee when the k.o. was flashing, could mamehooker make that happen?

[Howard_Casto]

Uh you've got to be a bit more specific man.  What game?  If it doesn't have outputs then no, it won't work.  Mamehooker isn't a hack, it interfaces to mame's official output system. 

[Generic Eric]

Uh you've got to be a bit more specific man.  What game?  If it doesn't have outputs then no, it won't work.  Mamehooker isn't a hack, it interfaces to mame's official output system.

Sure.  I thought I mentioned punchout in my previous post.  I'm going to give your mamehooker a go after work this week. 

[Vigo]

Autohotkey might be able to help with custom lighting. Similiar to what Nitz and Le Chuck put together for joystick autoswitch to 4 way on the Tron light cycles stage. Have a script that will trigger every time K.O. is onscreen.

http://forum.arcadecontrols.com/index.php/topic,117395.msg1243777.html#msg1243777

[BadMouth]

1. Did the original arcade machine have an output for such a thing?
2. Is the output hooked up in MAME?

[Howard_Casto]

No it didn't, so no it won't work. 

That being said, troubleshooter 2 might do it.  You can use the output sections only, so you'd have to fire up cheat engine or something similar and determine the byte where the KO variable is stored, hook that to an output and use the broadcast outputs option to send it along to mamehooker.  Just remember that memory locations are rather temperamental, so if you ever upgrade your mame version your are likely to have to search for the byte all over again.