Marble Madness Board Questions - Please Help Identify

rainman154

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Marble Madness Board Questions - Please Help Identify

Hey all,
I recently got some NOS Marble Madness kits.
Here are the pics of the boards.
From left to right....
The first board has a sticker Marble Madness on it. The second board has 2 extra roms on it with White at C34 and C41.
The third looks identical to the first with the sticker.
Any way to know for sure that they are all Marble Madness? All boards say Atari System 1 A043061 1984.

Photo 1 is of board 1 with Marble Madness sticker and board 2 with extra roms.

070.jpg


Photo 2 is of all three boards
071.jpg


Photo 3 is of the two extra roms with white.
072.jpg


Are all three Marble Madness?
 
It looks like the middle board is using eproms while the others are using roms.

Is it possible to have smaller eproms and therefore need more for the same amount of data?
 
They can use 128 or 256 roms in those sockets. If you look to the right of the roms in question, you can see a jumper for 128 or 256.
The one with fewer roms probably has the jumper set for 256, while the other has the jumper set to 128.

Hope that helps.
 
Every MM board I've seen has the Rom's in the same locations.

Some use the masked roms (black chips, no window).
Some use regular erasable roms (window with sticker over it)

I think (don't remember) that there were a couple versions of the roms. Maybe someone "updated" one of the boards (hence the changed roms).

I'm guessing that the 2 roms in the extra locations are not used by the programming.

I am 99% certain that all MM carts used the same sized roms in the same locations.
 
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