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the state of mame

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ErikRuud:


--- Quote from: ark_ader on January 13, 2011, 07:39:34 pm ---
I say you are stoking a fire, when it should have been extinguished long ago.

What are we trying to achieve here after 11 pages?

--- End quote ---

It's cold here in northern Illinois.  Fire Good! ;D

ErikRuud:


--- Quote from: RandyT on January 13, 2011, 04:54:18 pm ---  I thought Ray was goofing when he mentioned it.  :P

--- End quote ---

So did I, but I wasn't sure so I checked KLOV.

CheffoJeffo:

I'm pretty sure that Ray doesn't give a crap about the pneumatic buttons on SF ... the guy had an Atari Dominos in his collection (and it looks really great beside my Exidy 440 Multi!!!).

 :afro:

newmanfamilyvlogs:

http://www.freepatentsonline.com/4850591.pdf

Some interesting stuff here.

SavannahLion:


--- Quote from: pinballjim on January 14, 2011, 11:11:25 am ---Ah well, I thumbed through that.  It looks like at some points it says it's sending an analog signal to the board, and at other points it's saying that the button feeds a 'pressure sensor' that in turn sends regular old button inputs to the board.  I really can't imagine that they'd waste the processing power needed to analyze those inputs in real time when it could all be done mechanically, but who knows...

 :dunno

--- End quote ---

Yeah, I was going to point out that patent but cotmm beat me to it.

The patent (and pictures of each version) show that the pneumatic buttons actually have a tube leading away. On the only PCB picture I can find (KLOV), there doesn't seem to be any place for a four tubes to be plugged in. On column 5 about the third paragraph down, it describes a pressure sensor (which is conveniently not shown) and later it describes what sounds like a voltage divider. Knowing you're going to need three inputs for each buttons, doesn't that sound like a 4 bit A/D converter with one bit unused? I'm not being sarcastic, I'm actually asking. I'm guessing there's actually a daughter board that accompanies each button. This is the most likely scenario because someone on the KLOV mentions having this cab converted to six buttons, wants to convert it back to the pneumatic, actually has the pneumatics but doesn't have the wiring harness.

In a nutshell... there's a daughter board that does all the heavy lifting.

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