Defender...

[Zakk]

Any way to get (mame) Defender to set to free play??  I've been trying to figure out how to do it, since there doesn't seem to be a dip switch setting.  I'd like to set my defender on free play so that the kids will stop yelling every time it runs out of credits...

[JCKnife]

Assuming you're running MAME couldn't you just configure the start button to also provide the coin drop?

(or heck, the fire button for that matter--REALLY run up those credits!)

[Thenasty]

this is where a secret button comes in handy, so they just use it themselves but not others (who don't know about it).

[southpaw13]

On Stargate and Robotron (other Williams games), you hit F2 on your keyboard to bring up the admin menus.  I got both of mine set on freeplay.  On Stargate, there was actually a 'yes or no' question for freeplay.  On Robotron, you have to set the number of lives to freeplay.  This should work for Defender.