System 80
Black Hole
Circus
Counterforce
Critical Mass
Eclipse
Force II
Haunted House
James Bond 007
Mars God of War
Panthera
Pink Panther
Star Race
The Amazing Spider-Man
The Incredible Hulk
Time Line
Volcano
System 80A
Alien Star
Amazon Hunt
Caveman
Commandos
Devil?s Dare
El Dorado City of Gold
Fast Draw
Goin? Nuts
Ice Fever
Jacks to Open
Krull
Mythology
Punk!
Q*bert?s Quest
Rack ?Em Up!
Ready?Aim?Fire!
Rocky
Royal Flush Deluxe
Spirit
Striker
Super Orbit
The Games
Touchdown
System 80B
Amazon Hunt II
Amazon Hunt III
Arena
Bad Girls
Big House
Bone Busters
Bounty Hunter
Chicago Cubs ?Triple Play?
Diamond Lady
Excalibur
Genesis
Gold Wings
Hollywood Heat
Hot Shots
Monte Carlo
Night Moves
Raven
Robo-War
Rock
Rock Encore
Spring Break
Tag-Team Pinball
TX-Sector
Victory
NvRAMs
are another option, they aren't always the simplest or the most cost
effective. For one, they don't preserve the function of the Real Time
Clock (RTC). While it's not a necessary function for most games, I
believe that most collectors want their games to function as designed.
Also not all RAM chips are socketed making installation more difficult.
If the RAM is socketed, it could still have acid corrosion or be worn
out and not hold the NvRAM tightly. NvRAMs can and do fail. I understand
batteries die, but they are much simpler and cheaper to replace.
Another
option is remote battery packs. To me this is the most ridiculous
solution. When the board has to come out for service you either have to
disconnect it meaning all of your settings are going to be lost, or
you'll have to work on the board with a battery pack flopping around.
And if you think a remote battery pack is going to save you from acid
damage, it won't. It will only buy you time. I have seen several
instances where acid has traveled up the wires.