It's getting closer and closer!
Actually, I bought a LSI cartridge, but it didn't work. But was able to swap the chips into another LSI daughterboard- Peter Packrat. Still didn't work, but brought it home and found a bad EPROM. Back to the machine--
soooo close:
The marble still doesn't display, but the rest of the maze does. Big improvement.
A vertical black bar appears at the horizontal position of the marble. As you roll the marble to the left or right, the black bar tracks your movement. You can't tell where vertically on the screen the marble is.
I guess it's where any Motion Object is- in the first shot below, there is a bar where the black marble is rolling along also. Same with the 'pieces' when the marble rematerializes after getting dropped.
So, you still can't play
Next plan is to swap all the socketed chips back over to the LSI board that these came out of and retest. Any help is appreciated.
Here is an older thread showing a previous problem:
http://forums.arcade-museum.com/showthread.php?t=138211&highlight=marble+madness
And a 10-second shot of the current issue:
http://www.youtube.com/watch?v=6x6rpPO10Y8
Actually, I bought a LSI cartridge, but it didn't work. But was able to swap the chips into another LSI daughterboard- Peter Packrat. Still didn't work, but brought it home and found a bad EPROM. Back to the machine--
soooo close:
The marble still doesn't display, but the rest of the maze does. Big improvement.
A vertical black bar appears at the horizontal position of the marble. As you roll the marble to the left or right, the black bar tracks your movement. You can't tell where vertically on the screen the marble is.
I guess it's where any Motion Object is- in the first shot below, there is a bar where the black marble is rolling along also. Same with the 'pieces' when the marble rematerializes after getting dropped.
So, you still can't play
Next plan is to swap all the socketed chips back over to the LSI board that these came out of and retest. Any help is appreciated.
Here is an older thread showing a previous problem:
http://forums.arcade-museum.com/showthread.php?t=138211&highlight=marble+madness
And a 10-second shot of the current issue:
http://www.youtube.com/watch?v=6x6rpPO10Y8
