Pole Position custom IC?

KaBoom1701

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Anyone know where I can get a custom IC chip for Pole Position. I need to get the high score chip at 7E. My HS's are all messed up and even when I flip the test switch and clear the scores they will not repopulate with the fake ones like the game manual says. On top of that there is a HS of 92K that never seems to go away no matter what I try....I'm never going to beat that score. lol
 
ok, maybe I'm going about this the wrong way. What chip controls the HS saves on the PCB?

I can get my HS saves to work now but I can't erase the first one which is stuck at 92k..... I just figured it got burnt into a RAM chip somehow...

How does the game populate the HS table with fake names and scores at 12,000? What chip controls this function?
 
Yep,

Done all that several times now. Now matter what I do the 91K+ score never get wiped out from the HS table..
 

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Yep, tried that about an hour ago. Left everything unplugged and removed the 7E chip.....still boots with that dang 91K score on the HS table....

It's almost like the HS table has been corrupted but it does keep track of our scores. Jsut can't wipe the top score out....
 
Have you need to verify your roms?

Maybe a rom socket issue? kind of unlikely since but worth taking a look at while your pulling your roms to verify them.

I thought maybe a write signal issue but since the others scores get cleared out. I assume the write to the IC chip is working.
 
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Yep, also thinking a ROM issue now ... doesn't clearing HS on PP show this screen where #1 is 12000 points?

If the RAM is removed, then it leaves the default ROM state. No?

Thumb_Pole_Position_-_1982_-_Namco.jpg
 
Just to follow up on this I replaced the 7E chip with this one:

DALLAS DS1220AD-200IND DIP-24 64k Nonvolatile SRAM

Problem solved. :D

Hope this helps someone else down the road someday.

VC....thanks for all the help. :cool:
 
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