Vs Baseball Burning Problems?! ...

lilman573

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So i have been trying to burn Vs Baseball and I can't seem to get it to work. I have tried two different known working PCBs, 4 different sets of matched 2764's, the original rom file and two of the bootleg versions that i downloaded online.

Best i can get it garble on side B and a grey screen on side A. Is this a known issue with the mame rom? Am I missing something simple? I checked the dips, and there isn't anything there that would keep the game from booting. I'm at a loss here.

Would someone be willing to send me their known working baseball set so that i can dump the roms to see if it is something i am missing?!
 
I've burned it before using the mame roms... on the double sided games though you have to make sure every pin of every chip is making good connection or nothing will work.

I'd just check all the normal stuff, are you sure the chips are on the correct side of the board? Do both ppu's definately work? Do both cpu's definately work? Are any chips in backwards?


Do this... leave the ppu's and cpu's in, and put 2 chipsets in (any game, doesn't matter). Get it working with THOSE ppu's and cpu's, then just leave them in. If you put the wrong chips (say... Super Mario or whatever) it'll still work, it'll just be the wrong color because you have the wrong ppu in. Get it running with two chipsets in both sides, then just replace the eproms and leave the ppu's and cpu's exactly how they are since you just made sure they're in the sockets and working correctly.
 
So i have been trying to burn Vs Baseball and I can't seem to get it to work. I have tried two different known working PCBs, 4 different sets of matched 2764's, the original rom file and two of the bootleg versions that i downloaded online.

Best i can get it garble on side B and a grey screen on side A. Is this a known issue with the mame rom? Am I missing something simple? I checked the dips, and there isn't anything there that would keep the game from booting. I'm at a loss here.

Would someone be willing to send me their known working baseball set so that i can dump the roms to see if it is something i am missing?!

Make certain you are programming with the correct voltage to the rom chips. Read them, several times, to verify the crc doesn't change.

AND by all means do as previous suggested by LyonsArcade

leave the ppu's and cpu's exactly how they are since you just made sure they're in the sockets and working correctly.
 
I've burned it before using the mame roms... on the double sided games though you have to make sure every pin of every chip is making good connection or nothing will work.

I'd just check all the normal stuff, are you sure the chips are on the correct side of the board? Do both ppu's definately work? Do both cpu's definately work? Are any chips in backwards?


Do this... leave the ppu's and cpu's in, and put 2 chipsets in (any game, doesn't matter). Get it working with THOSE ppu's and cpu's, then just leave them in. If you put the wrong chips (say... Super Mario or whatever) it'll still work, it'll just be the wrong color because you have the wrong ppu in. Get it running with two chipsets in both sides, then just replace the eproms and leave the ppu's and cpu's exactly how they are since you just made sure they're in the sockets and working correctly.
Thanks for the reply guys!

So, the PPUs and CPUs definitely work. My logic went like this. I have two PCBs i have setup for dual system games. One for wrecking crew and one for balloon fight. I always leave the CPU's in these boards because i know they work together. I have had some weird issues before with CPUs not liking to work together. Both my 0001 PPUs work, they came from my pinball set and my skykid.

My trouble shooting went like this. Took the working Balloonfight board. Only changed out the PPUs. Balloonfight works with the different colors. Ok, so its not the PPUs. Then changed back to the 003 PPUs and made sure balloon fight still worked. It did. Then took the rom chips out and switched them to the baseball. Wouldn't come up with either set of PPUs. I then repeated the process with the wrecking crew PCB....

All pins are in there good, burned the chips at the correct voltage and even verified them all twice.

I am really at a loss here. It does make me feel better that someone has successfully burned the game from the mame rom though. Makes me think it is something on my end.

-John
 
You've got a bum eprom in the group somewhere.

+1

Do several reads on them, more than 2 and the crc should not change. Verify the roms are the correct ver. and have the right info on them. I usually suspect a rom when I see many different rom chips in a set and all are of the same type.

Example would be all rom chips are 2716 but have different makers, Intel, Texas Instruments, Motorola, etc.
 
Yep, that's the problem I had. I had a 2764 that would erase just fine (reader verified it was erased) but would error out after programming. No matter what I tried, it just wouldn't take programming. Luckily for me, my programmer (a Needham's EMP10) software alerted me that the chip wasn't programming properly.
 
Alright, so now I am thinking.if I get garbled data on side b that means I can isolate side a.

The burner I use verifies the chip against the file when it is done burning. They verify fine, but I will do reads to make sure that I can romident them. That should verify the from files on the chips by the checksum right?

I've been burning these vs chipsets for years, this is the first set I have had a problem with....!
 
Try this.

Take an extra rom, and burn it as the first chip... then swap it into the board and see if that fixed it. Work through them 1 at a time and see if you get any difference... You may have a rom that reads fine but is bad... I've seen that plenty of times.

You'd think since it reads in your burner fine, that the board would read it fine too, but my reader sometimes doesn't burn them properly, then still reads them as properly burnt. So they test fine but won't play.
 
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So here is where I am. First I read all the rooms and verified the checksum using romident. Found 1a didnt check out right. Burned a new one and now they all check out. I get garble on both screens. Found that off I coin up before it resets i can get it to go into a game and then resets....

I burn a completely new set onto a working tennis set. Same thing. Even replaced the chips one by one to see if anything changed.

Alright guys I'm all ears!
 

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Tried two other PCBs. There is no way it could possibly be all three of my boards...right?

Hmmm....
 
Tried two other PCBs. There is no way it could possibly be all three of my boards...right?

Hmmm....

I still want to see the numbers on the rom chips, specifically the speed they are rated at. That can be the issue. The crc's would check out but at speed they may not work, I have not had this problem but have read where others have. I would invite steph to weigh in on this issue as he would know more about this than I.
 
I think a better question would be, do you have another burner/reader ? It's just having problems burning them for some reason.

Have you burnt other vs. sets no problem? (I get the feeling you probably have!).
 
I think a better question would be, do you have another burner/reader ? It's just having problems burning them for some reason.

Have you burnt other vs. sets no problem? (I get the feeling you probably have!).

I don't have another burner or reader, so i couldn't try that.

Funny part is, i wanted to see if it was the chips, took the first set I burned, erased them and put pinball and smb on them and both sets work flawlessly.

I have burned probably 100 different sets of VS games for the guys here and this is the only one i can't get to work?!! Well, this one and RORB.
 
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I suspect a bad rom dump image.

That's where my head is, but all the rom downloads are the same online. Only way for me to get a good one would be to have a set shipped to me and dump it myself.

That's kind of why I was hoping to get confirmation from someone on here that they have gotten it to work from the online mame rom...
 
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