RE: Dig Dug freeze problem

If it's like most games, you can run a wire from the PCB's coin-up to the 2P
start button. Hitting it once adds a credit, then hit 1P to start or 2P
again to credit & start a 2P game.

No different than what Al described, but doesn't require a new switch
anywhere.

- Adam

> -----Original Message-----
> From: Al Warner [mailto:Al@alsarcade.com]
> Sent: Thursday, January 15, 2004 11:54 AM
> To: rasterlist@vectorlist.org
> Subject: Re: RASTER: Dig Dug freeze problem
>
>
> I like it when help I offer actually "works" - hehe!
>
> I'd like to add my hat to the "Free Play Hack" need. If the
> game used a
> standard leaf switch as a 1 or 2 player start button, I would
> just stack
> another "coin switch" with some fish paper like a pinball machine, but
> micro switches prevent that.
>
> I rigged a switch behind the right coin eject to add credits.
> You just
> push the coin eject and a credit is added. When Mark
> Davidson came over,
> he was wondering how I did this and what sort of custom
> bracket I had used
> to accomplish this task. He seemed let down when he saw the
> thick rebent
> paper-clip wire holding a leaf switch in place and kinda
> moving the wrong
> way when the eject is pressed. It's not elegant, but it works.
>
> Free Play would rock though.
>
> Congrats on getting it working! I've had a lot of Dig Dug
> boards in the
> past, but only 2 that worked. I've never had any luck
> getting a dead one
> to work.
>
> Take Care,
>
> -Al-
>
> > Well, solved my 'problem'. Broke down last night and built
> an adapter
> > harness for my test bench and began looking at both my Dig Dug PCBs.
> > Taking Al's lead, I looked at the components around the two
> banks of dip
> > switches. Moved a couple of dip switches and the game came up!
> >
> > Now, I am aware there is a dip switch on a Dig Dug PCB that freezes
> > gameplay. Is this feature useful? Dunno. The odd thing is,
> the 'freeze'
> > dip switch was set in the 'off' position such that the game
> would play
> > normally. There was another dip switch (5 I believe it was)
> which has
> > nothing to do with freezing the game. In fact, it is only used for
> > Continuation. It was also set to the 'off' position and
> cased the freeze
> > during bootup. And since I set up both PCBs with the same dip switch
> > settings, they both exhibited this 'problem'.
> >
> > Nice. :)
> >
> > Anyone hacked through the Dig Dug code to implement free play yet?
> >
> >
> > tom
> >
> > Al Warner wrote:
> >>
> >> I had a similar problem with my Space Duel. It ended up
> being one of
> >> the
> >> resistors in line with the DIP switches was broken in
> half. I changed
> >> it
> >> and the DIP switch worked properly. The one that was bad
> on mine was
> >> the
> >> one that controlled Free Play. Because Space Duel doesn't have
> >> attract
> >> mode in Free Play, I had to set it for coins.
> >>
> >> Good Luck,
> >>
> >> Al
> >>
> >> > I have two Dig Dug PCBs which are exhibiting the same
> >> > problem. In two different Dig Dug cabinets. Weird.
> >> >
> >> > The game will boot up just to the beginning of attract
> >> > mode, and then freeze. There will be 9 Dig Dug characters
> >> > at the bottom of the screen and the game will not advance,
> >> > nor will it coin up.
> >> >
> >> > In self test, everything checks out ok.
> >> >
> >> > Here's a picture of the screen:
> >> > http://www.ionpool.net/dig_dug.jpg
> >> >
> >> >
> >> > I did a quick swap of the three Z80s and it had no effect.
> >> > I have also checked to make sure the 'Freeze' dip switch
> >> > is not turned on. Suggestions?
> >
> >
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>
>
> -=-=-=-=-=-=-=-=-=-=-=-=-
> Visit Al's Arcade
> http://www.alsarcade.com
> -=-=-=-=-=-=-=-=-=-=-=-=-
>
>
>
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Received on Thu Jan 15 13:42:45 2004