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What "extra" buttons should I consider including on my 2 player CP?

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Oddfeld:

You can waggle the joystick left and right instead of hitting OK to get past the nag screens in MAME - or just disable them so they don't show up in the first place.

This is the default keymapping for an IPAC:
http://www.ultimarc.com/ipac2.html

If you're using an OPTI-PAC to wire up a trackball, that will handle mouse buttons (it only simulates a 2-button mouse though). From the Ultimarc website:


--- Quote ---What about mouse buttons?
Four inputs are provided for mouse buttons, two for each port. These inputs can be wired up together with I-PAC button inputs so that control panel buttons can perform dual function: mouse buttons and normal key-type inputs. So you could use your trackball as a mouse with two of the control panel buttons working as mouse buttons and also have these buttons work in games via the I-PAC.
--- End quote ---


eyal8r:

Hmmm- yup- just looked at my opti-pac- I didn't realize it had capability for buttons on it. So- since I don't have holes in my CP for TB buttons- is there a way I can tell Mame that I want to use the 1st 2 buttons on each player button set (fire, jump buttons) for the left/right buttons, instead of adding more buttons on the CP for this?
D

Jabba:



--- Quote from: Apollo on December 09, 2004, 04:41:37 pm ---You don't need pause or enter or escape. P1 start +P1 joystick down is pause. P1 start + P2 start is escape etc. I think the functions are on the Ultimarc web site.

--- End quote ---

Hey Apollo. Thanks, great info...

Oddfeld:


--- Quote from: eyal8r on December 09, 2004, 07:09:37 pm ---Hmmm- yup- just looked at my opti-pac- I didn't realize it had capability for buttons on it. So- since I don't have holes in my CP for TB buttons- is there a way I can tell Mame that I want to use the 1st 2 buttons on each player button set (fire, jump buttons) for the left/right buttons, instead of adding more buttons on the CP for this?
D

--- End quote ---

Yes, you'd wire those 2 buttons to the mouse button connections on the OPTIPAC. If you don't want to go to the bother of configuring the mouse buttons to be the first two fire buttons in MAME, you can just wire those buttons up to the IPAC too, so that when you hit the P1 fire button, say,  the computer sees it as hitting the fire key (space or whatever) and a left mouse click, both at the same time.

PhoneGuy:

I have a dedicated pause button so either player can quickly/easily pause the game.  I added separate mouse buttons near the trackball since I didn't want run into some other emulator or software that did not react well to mouse and keyboard buttons being pressed together.   I also have Player 1/2 start and coin buttons.  It gets old dropping tokens into the coindoor for credit eating games like the Simpson's.  Pinball buttons on the side.

The shift key with a player button works OK for ESC. A couple of my three year old relatives were playing during a thanksgiving visit. I have since re-assigned ESC to the shift key (player 1 start) + two separate player buttons.   They were kicking themselves out of the games as the parents were pressing player start  for them.

The default IPAC ESC setting is Player 1 Start + Player 2 Start.   This combo inadvertently ended a number of two player Metal Slug games when we both hit the player starts at the same time to continue the game. Other games would also have this problem.

Shift key + your standard player buttons and joystick directions offer plenty of "hidden" admin functions.


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