Gorf RAM Test ROM (Spaeth)....

Alan173

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I have used Mark's test ROM with very good success but ran into a RAM error code of U0 on a particular Gorf RAM board which makes no sense. The code shows up as U0_.....which is U0 and then a blank space. Since this location does not exist on the RAM board (all boards are locations U1 through U16) does anyone have any ideas? Has anyone run into this before? I know when my U4 location was bad it displayed U04 so I'm wondering if it is one of the RAM's 1 through 9 gone bad with a grpahics glitch? My game is displaying the classic RAM failure bars so I know there is bad RAM hiding somewhere...

Alan
 
Alan, I had one do that once. It turned out to be RAM "09". I think you're on the right track....01 through 09 RAM.

Edward
 
Well....there was a single pixel that was showing up where the second digit was supposed to be....and it was a huge help. It could only be a 3 or a 9 based on where that pixel was located. I replaced RAM U9 and everything cleared right up! So....I have the RAM fixed again......but now I have a bad pattern board. Man.....these boards are just daunting.....I'm finding nothing wrong and it seems like I still need to make about 1000 checks..........geeeeeeesh........damn this Gorf game....:(
 
Yeah, the pattern board is one of the worst boards to have to fix. I hate fixing them.

Edward
 
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