Main > Main Forum

If I've got a SHORT, how come its still working?

Pages: << < (2/2)

OSCAR:


--- Quote from: HeadRusch on May 19, 2003, 10:06:11 pm ---UPDATE:There is definately something "UP" With either my IPAC or the new Windows utility.

Using Ctrl ALT P and putting the Ipac into test mode, ALL MY BUTTONS register......however, when using the WinIPAC utility, I cannot assign any inputs at ALL to buttons 5-8 on players 3 and 4....press the button, and I press any keyboard button, and it wont register.

Also, on player 1 and 2 you can right mouse click on a button on the GUI and select a function like APPLICATION or POWER, as is detailed in Andy's writeup of the new release....but if you try that on player 3 or 4 inputs, no dice.  I'm not sure if its designed that way or just an oversight.

Anyhow, I'm going to try programming with the DOS version.

The annoying thing is that even with the jumper set to default MAME settings, I STILL can't use those buttons when using MAME32...it doesn't see them...even though test mode shows NO SHORTS and the keys register.

!?!?! Gadzooks this is confusing ;)


--- End quote ---


This sounds like it's worthy of an email to Andy for help.   :)



HeadRusch:

Oh yes, Andy's already asking questions and I'm trying to give him reasonable answers ;)

Its just so damn odd.  The board shows no shorts, the TEST mode works great (all buttons registering!), and the stupid thing is pretty simple to wire up :)

"Player one.....here....Player two.......here".  I knew that college degree would pay off!

But the programming just doesn't work for me.....I even tried the DOS util, and its no go.  

I gotta tell ya..I *loathe* the idea of having to replace the IPAQ....although it will give me the opportunity to deal with the rats nest of wires.



AlanS17:

When I first read this topic I thought you meant you had problems in the bedroom, but an understanding partner.  ;)

BeBoxer:


--- Quote from: HeadRusch on May 19, 2003, 09:18:07 pm ---
My little $5.00 voltmeter is set to read continuity.....for example, red lead on NC and black lead on ground and boom, the numbers take off (then start to drop as the batteries try to push as much as they can).
Then, touching NO....no flow.  Until I press the button, circuit is closed, and I get readings.  "Good Switch" I say.


--- End quote ---

I'm still confused. By "continutity", do you mean resistance? If so, your description doesn't make sense. The NC contact is "normally closed", meaning it is connected to ground when you are NOT pressing the button. Which means that you should measure zero ohms and zero volts, or very close to it, between NC and GND when you are not pressing the button.

You are wiring the inputs on your I-PAC to the NO contacts, right? Because if you have wired the inputs to the NC contacts, which are all connected to the GND without the buttons pressed, then you would basically have every input, every contact, everything in your CP wired up to ground. Which would explain why you are having problems. It wouldn't explain why anything works at all, at least not that I can figure out.

Either way, phrases like "no flow" and "good reading" don't really mean much. Please just state what you're measuring in volts or ohms as appropriate. Not to nag, it's just difficult to debug if we have to guess what you're actually seeing.

HeadRusch:

Sorry...am testing volts...and 'odd things' are happening.....jury is out on whats up, I'm waiting on Andy to reply with suggestions.

Again...the built-in IPAC test mode shows no shorts at all and 100% functionality even on the keys that refuse to work when I try to program....either by DOS or by Windows.....



Pages: << < (2/2)

Go to full version