Pal16r6cj ic question

dyno

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I have a pal16r6cj ic on my bagman board that is getting very hot, is this an ic that holds programmed info for the game? I found one on ebay but don't know if it would need to be programmed? What is its job? I assume that it might be no good since it is getting very hot.
 
Programmed.

To make matters worse, it's a fuse link programmed device so you can't reprogram it.

You CAN replace it with a GAL, PEEL, or PALCE chip which *are* reprogrammable (and reusable)... BUT, you must have the code for it or you can't.
 
Where would I get the code for it?Can I get the code for it? I am assuming it is toast because it's getting so hot.When I bought the board the seller said it was working, I assumed it was the broken traces on the board from shipping was the reason it wouldn't work properly.
 
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Not sure how many bipolar PROMs are on a Bagman, but at least some are dumped and in the MAME rom sets. What's the location of the subject PROM? Does it have any label on it? If so, what is on said label?

Oh, and how hot is it? Like, too hot to touch for more than just a second? Or hot, but touchable?
 
Not sure how many bipolar PROMs are on a Bagman, but at least some are dumped and in the MAME rom sets. What's the location of the subject PROM? Does it have any label on it? If so, what is on said label?

Oh, and how hot is it? Like, too hot to touch for more than just a second? Or hot, but touchable?

My mistake. We're not talking about bipolar PROMs, but a PAL. I only see one on the (aweful) bagman schematics; at 6P. It appears to be some sort of protection device(?) Kind of bizarre, actually, it just takes some address lines and outputs to the data bus.

The MAME source has this to say about it:
Code:
   44  PAL16r6 This chip is custom logic used for guards controlling.
   45          Inputs are connected to buffered address(!!!) lines AB0,AB1,AB2,AB3,AB4,AB5,AB6
   46          We simulate this writing a800 to a805 there (which is wrong but works)

Someone sufficiently clever may be able to use that to duplicate the function of this PAL from this description (which is NOT documented, per se, in MAME).
 
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