Ms pacman - is this a factory 6f chip

ckylesworld

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I just bought a factory 1981 stand up ms pacman machine and it seems to play fast. So I checked the 6f chip and this is what it looks like. It says smp 6f. Is this factory and if not can I change it back to factory speed?
 

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Factory or not... please be warned that at original speed, Ms. Pac-man is exceedingly boring :) There's a good reason so many had such a speed-up chip installed... it's much more fun.
 
But I always found the fast Ms. Pac Man boring in a way as well. BITD, it looked like a lot of ops opted for the speed chip to shorten games and gobble more quarters. I couldn't count all the people I watched who careened helplessly into ghosts since they couldn't react quickly enough to anticipate turns and execute them. Once you figure out to execute maze turns before you round the maze corner, there's no way Blinky is going to get you. :)
 
To answer your question..
No. Not a factory chip.

Can you replace it? Yes.

Can you do it yourself? If you have an eprom programmer that can write to 2532 eproms and have a eprom eraser. Yes.

Can you Just buy a chip and Install it your self? Yes.
 
I am wanting to buy a stock 6f chip but can't find one. I checked twistedwrist and didn't see it. I sent them an email looking for one. Hopefully they get back to me. If anyone on here has one I would be interested in buying it.
 
Ok, I received the new 6f chip in the mail and I opened the back of the ms pacman machine to replace it. I have never done this before but I assume you just pull the old one out? I tried a little but was affraid of breaking something. It seems VERY stuck where its at. Is there a specific way to get the old 6f out??

Also it seems that the 6f chip is half way under that other board that is near it. Do I have to remove that board first? (you can see it in the pic in the first post of this thread)
 
Thanks, that was really helpful.

Does the daughter board just come off by pulling it off or what?

Sorry to have so many questions but this is the first time I have ever done anything with arcade machines.
 
Yup. It is a socketed board. Also you will have to pop that daughter cards cherry and cut that zip tie first.
 
Yup. It is a socketed board. Also you will have to pop that daughter cards cherry and cut that zip tie first.

If you want to keep the daugter card's zip tie in tact, it IS possible tor replace that eprom without cutting the zip tie and removing the board. There's enough room to reach in there and pry up the chip.

I've done this when restoring an original pac board back to its original state.
 
Make sure the notch on the chip is facing torwards the bottom of the board when you install the new one. If in doubt look at all of the other chips and you will see the notch facing the same direction.
Thats a new chip so the legs may have some flare on them. Make sure all of the legs are in the socket before seating the chip or you may fold the legs over.
It is possible to change the rom without removing the sync bus card but since this is your first time you should remove it so you can see what your doing.
 
Wow thanks for all the info. However I just got this in the mail:

http://www.jammaboards.com/store/pacman-ms-pacman-upright-cabinet-60-in-1-upgrade-complete-kit.html

So I dont know if I will be needing the eprom right now. I am havine ALOT of difficulty figuring out how to put this stupid thing in. It says "To install you would just first remove your original Ms. Pacman PCB from the cabinet connector"

1. Ok, do I take the bolts out around the whole pcb to get it out AND detach the daughter board too?
2. The 60 in 1 pcb is ALOT smaller so how do I secure it in the cabinet?

This is a christmas present and its stressing me out trying to get it ready in time for my son.

(posted this in a new topic on forum)
 
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