(Topic ID: 206195)

Bally Gold Ball - Switch Setting for 4 player

By graab

6 years ago



Topic Stats

  • 8 posts
  • 4 Pinsiders participating
  • Latest reply 6 years ago by graab
  • No one calls this topic a favorite

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#1 6 years ago

I am looking for the switch setting on the mpu to enable 4 players (2 player original default). I have seen several references made to how the machines originally only had 2 players, later allowed 4, but you have to enable via switch on the mpu - manual says sw30, but not working.

We recently picked up a GB in rough shape to restore and one of the issues is it only allowing 2 players even though 4 working displays (all working fine via self test). Had looked for a wiring issue, non found, prior to stumbling on this tidbit about the 2/4 player switch during research.

TIA for insight/comments.

G.

#2 6 years ago

Have you checked if dip switch 30 is working with a multimeter?
Could it be you maybe have an early version of ROM that doesn't support 4 players?? Not sure if such a version exists but you did mention "machines originally only had 2 players, later allowed 4"

#3 6 years ago

GB manual page 4A headline says “Grand Slam Switch Assignment”.
Switch 30 is probably a copy/paste of a Grand Slam game specific setting option.

#4 6 years ago
Quoted from kursiv:

GB manual page 4A headline says “Grand Slam Switch Assignment”.

Nice eagle eye

However in PinMAME/Visual Pinball, switch 30 does indeed change between 2 player and 4 player mode on Gold Ball with the version of ROMs out in the wild.
Speak Easy and Grand Slam which were also 2 or 4 player games used a different U2 ROM for number of players - they were not dip switch controlled.

#5 6 years ago

The switch worked ok on mine. Was the machine turned off when you flipped the switch?

#6 6 years ago
Quoted from Hop-Pac:

The switch worked ok on mine. Was the machine turned off when you flipped the switch?

Thanks to all for the help. Tried the switch on the mpu that was in the machine at that time. For grins, swapped out the mpu with spare, flipped the switch, and what do you know - this one works as it should. Am going to give the original board a thorough once or twice over to determine if problem is board, or early version of eprom. Have found very little info on this change other than a few references to the fact that they did a production run of 2 players for a short while b4 changing to 4.

Happy New Year

G.

#7 6 years ago
Quoted from graab:

a few references to the fact that they did a production run of 2 players for a short while b4 changing to 4.

Any info on if they did a 2P backglass?

2 weeks later
#8 6 years ago
Quoted from kursiv:

Any info on if they did a 2P backglass?

I had read an article somewhere about how they had produced a limited number of 2 player backglass machines. There is an image of the 2 player glass on ipdb.org.

http://ipdb.org/showpic.pl?id=1024&picno=27382

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