Capcom PAL IC's question (Yes me again:-).

Ace · Dec 29, 2004

I recently bought an extra Punisher board (untested) :rolleyes:

and after hours of testing and swapping parts over from my working board I've finally found the problem. At some point two of the PAL's on the B board have been swapped with incorrect ones. IOB1 (x2) is there but PS63B and BPRG1 are missing I could probable get a BPRG1 (From a SF2). But that still leaves me without a PS63B which seems to be exclusive to the Punisher board?. Anyway my main question is, is it possible to recreate PAL chips like with EPROM's or should I just give up all hope of getting a replacement?. :crying:

Thanks Ace.

MKL · Dec 29, 2004

As far as I know the PALs are protected and can't be copied...

ttooddddyy · Dec 29, 2004

Ace said:
IOB1 (x2) is there but PS63B and BPRG1 are missing I could probable get a BPRG1 (From a SF2).

That wont work, the programming of the SF PAL although in the same location will be different to the Punisher PAL

ttooddddyy · Dec 29, 2004

There are programmers available that will read/write PALs

http://microcontrollershop.com/product_info.php?cPath=92&products_id=333

Where to get the original PAL program ? I remember a thread where it was mentioned that they are sometimes included in the mame rom set zip files.
I lost all my mame roms in a HDD crash so unable to confirm this ?

Reznor007 · Dec 29, 2004

Some games in MAME do have the PAL/GAL code, but unfortunately, Punisher does not.

ttooddddyy · Dec 29, 2004

There are companies who specialise in programming such devices.

http://www.ealnet.com/m-eal/program.htm

you could send them the working PAL devices to use as masters, to read then write the code to blank PALs.

But as MKL states there maybe copy protection built in these.

ttooddddyy · Dec 30, 2004

Reznor007 said:
Some games in MAME do have the PAL/GAL code, but unfortunately, Punisher does not.

Rez
Does the Gunbird set include the PAL codes, thats U19 & U69 ?

Reznor007 · Dec 30, 2004

Just checked, and no, no PAL data for Gunbird. Do you have one you are trying to repair?

ttooddddyy · Dec 30, 2004

Reznor007 said:
Just checked, and no, no PAL data for Gunbird. Do you have one you are trying to repair?

Yes, and Id like to get this bird off the ground (it has the PALs inserted, but I suspect they have been replaced with incorrect coded PALs before I got the board) Symptom= no boot up.

segundosombra · Jan 10, 2005

Hi,
I checked SF2 mame rom set. It have some PAL files (16L8). I tryed to read them with my superpro programmer software but I can see only zeros. Are these devices protected?

Thanks.

Ace · Jan 10, 2005

Yes they're protected if they weren't there would be no trouble replacing them. :crying:

Capcom PAL IC's question (Yes me again:-).

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