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Getting 4 Player Games To Work With Single Coin Mech??
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lettuce:
I shall use TMNT as my example as its the only game ive tried. Basically i have a 4 player CP, and 1 coin mech in my cab, im using the 4 player TMNT and TMNT In Time roms, when i add a credit only player 1 (Leonard) is available to select.

How do you set us these and other 4 players roms, so that when u add a credit you can press any player start button 1,2,3, or 4 and then that character is selected?? Ive looked in the dip switch settings and cant see anything that relates to a 'single coin' mech. Now i know the UK version of TMHT only had one coin mech and after a credit was added players 1 2 3 and 4 start buttons would flash and then you would press the relevent start button depending on what turtle you wanted, so how do i emulate this within mame??
ARTIFACT:
you can always connect your p1 coin switch to p3 and p4 connections. when you add a coin to p1, p3 and p4 would also get a credit. not sure if this is what you are looking for
Crowquill:
Knowing your setup would definitely help. You can set it up so the one credit switch (button or door) trips a credit for all 4 players. Do you not have buttons or coin slots for players 2-4? Default keyboard mapping in MAME is 6-8 respectively.

TMNT was set up to have individual coin slots for each player (a very good thing in an arcade). The two-player version lets you pick your characters, but the 4-player is dependent on which coin slot you use. Even 4-player Teenage Mutant Hero Turtles is this way. It was a dedicated game so they didn't need to program in that flexibility.
Green Giant:
Why not just set player 3 and 4 coin buttons in mame to player 1 and 2.  When you drop a coin, it will supply them for 1&3 and 2&4 at the same time.
lettuce:

--- Quote from: Crowquill on September 02, 2007, 03:55:22 pm ---The two-player version lets you pick your characters, but the 4-player is dependent on which coin slot you use. Even 4-player Teenage Mutant Hero Turtles is this way. It was a dedicated game so they didn't need to program in that flexibility.

--- End quote ---

Nah the UK version (Teenage Muntant Hero Turtles) defently only had one coin slot. I think the best way is to connect my coin mech/credit board up to the other player start/credit buttons on my I-PAC as you guys suggested. Would it be possible to dasiy chain from P1 Start On the I-PAC to the other player start buttons, or would i have to run individual wires from each Player start input to my coin mech/credit board?
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