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Q*Bert Knocker writeup, correct me on parts
SirPoonga:
--- Quote ---Hmmm...I just spent some time thinking about this a bit more, and it looks like it would be hard to do for Win2k/XP. I found some source code for a util that allows direct port accessing in 2k/XP, but it's beyond me at this point. And, it seems like a chore to have to recompile for each release of mame (besides any possible issues of including "3rd party" source into a mame compile).
--- End quote ---
I add my own stuff ot mame every release anyway. I get rid of those pesky ok screens and add in analogmame. I use 98 because multiple spinners is more important to me.
You may have brought up a good point. Not sure if I can outp() in 2k/xp...
Man, 2k/xp has some good things and bad things!!!
Howard_Casto:
--- Quote ---Ok, if you want the knocker to go off for any other game that uses the keyboard leds you go right ahead and hook a relay to the leds.
--- End quote ---
tom61:
--- Quote ---I just spent some time thinking about this a bit more, and it looks like it would be hard to do for Win2k/XP
--- End quote ---
Since all you need is just one output, you could use a serial port. You don't have to worry about tripping over the Hardware Abstraction Layer with serial.
aramis:
Hmmm...I didn't realize NT/2K/XP let you directly access the serial port, unlike the parallel port. Might be a better way to go than the parallel port if that is the case. (And that leaves the parallel port open for my home built Dragon's Lair scoreboard and DAPHNE. :) )
I still like the idea of the KB LED the best...I will try to find out which games use the Scroll Lock LED to see if a toggle switch or what-not (to disable the knocker) would even be needed. I know there are several that use the Num and Caps Lock LED's, but I believe there are even fewer that use the Scroll Lock LED.
All in all, I'm sure that if we put our heads together we can come up with a solution that is simple, elegant, and expandable...and hopefully get it into the mame source code.
SirPoonga:
--- Quote ---
Since all you need is just one output, you could use a serial port. You don't have to worry about tripping over the Hardware Abstraction Layer with serial.
--- End quote ---
I couldn;t find schematics to hook up a relay to the serial port. Coding is pretty much the same anyway.
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