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Uh oh... ran out of buttons on my I-PAC2...

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ErikRuud:
Use the two inputs on the Opti-Pac!

I use the two mouse inputs on my PS/2 trackball with no problems.

sofakng:
Excellent, keep the suggestions coming!

I've thought about using the Opti-Pac left/right mouse buttons as admin buttons... However, on the control panel I also four more buttons:  "Left Mouse Button" and "Right Mouse Button" (two sets of these wired together, so really its only two buttons).

Now, I was going to wire these to the Opti-Pac, but I could wire them to the same player 1 button 1 and button 2.  That would mean I have four buttons wired to "player 1 button 1 and button 2" but thats OK.  

If I did that, I would free up Mouse Left / Right on the Opti-Pac...

Phew, anybody understand what I just said? :)

What would you do in my situation:

1) Remove player 1 and 2 button 7 and use those extra two buttons for the admin functions.

2) Connect my current mouse left + mouse right buttons to player 1's button 1 and button 2.  (thus freeing up mouse left / mouse right and using those two for the two admin buttons)

3) Ask Andy about one-button shift-key wiring.  I'm a bit clueless on this, but if I talk to Andy I could probably figure it out.

I'm leaning more towards option #1, but I'm really worried that I'll run into games that require 7 buttons per player.  Are there any of them like this?

Tiger-Heli:

--- Quote from: sofakng on July 13, 2004, 10:48:15 am ---1) Remove player 1 and 2 button 7 and use those extra two buttons for the admin functions.

2) Connect my current mouse left + mouse right buttons to player 1's button 1 and button 2.  (thus freeing up mouse left / mouse right and using those two for the two admin buttons)

3) Ask Andy about one-button shift-key wiring.  I'm a bit clueless on this, but if I talk to Andy I could probably figure it out.

I'm leaning more towards option #1, but I'm really worried that I'll run into games that require 7 buttons per player.  Are there any of them like this?

--- End quote ---
My suggestions were in order of preference, but if you have labelled mouse buttons on the panel, that might kill that.

Option 2 is good.

There are no seven button games in MAME (except Mole Attack, 9 buttons but you can "borrow" 3 of P2's buttons for that).

Now if you wan't to talk console (Nintendo 64) emulation, there are lots of 4-player 8-button dual analog stick games, but that won't work with your set-up anyway.

AndyWarne:
You could use the method of doubling up inputs using the shift function which is detailed here: www.ultimarc.com/extra_shift.html
Another option is to swap the board for a 32-input I-PAC VE which I can arrange if you drop me an email.
Andy

Tiger-Heli:

--- Quote from: AndyWarne on July 13, 2004, 11:37:53 am ---You could use the method of doubling up inputs using the shift function which is detailed here: www.ultimarc.com/extra_shift.html

--- End quote ---
That was the page I meant.  Just out of curiosity, could the same concept work with two buttons using two capacitors and two resistors?

--- Quote ---Another option is to swap the board for a 32-input I-PAC VE which I can arrange if you drop me an email.
Andy

--- End quote ---
Nice offer!  sofakng needs to know that the I-PAC VE is USB only and that it uses SDRAM, so custom codesets must be re-loaded from software, but as long as neither of those are a problem, that's a good option.

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