Dreamcast mod chip problems

[Max P.]

Wonder if anyone can help?

I have installed a 4 wire mod chip in my Japan DC but it still will not recognise Pal or US discs.  Everything has been checked, triple checked and checked a dozen more times.  I've done mods to consoles since '91 but this is infuriating.

Chip is here:

http://www.goldenshop.com.hk/AI-trad/Dream.../d_4wiremod.htm

Any ideas why it might not work?  Is it possibly a faulty or non-programmed chip?!

[kendrick]

You sure the chip is compatible with your particular Dreamcast? As I recall, the Katana 2.1 isn't compatible with that final four-wire chip. Let's see, do I have a link? Yes I do:

http://www.ncsxshop.com/cgi-bin/shop/NCS_LOGIC_v4.html

NCS is an importer in New York that's a bit more informed than the guy selling PIC chips at the computer show. They have a short guide to help you identify your motherboard revision so that you can tell if the mod chip will work or not. Good luck.

-KKC

[Max P.]

Hi, thanks for the quick reply.  My DC is a launch model - very early with the cooling pipe/metal fan surround.  Only thing I can think is that the chip is faulty...?  It continues to boot Jap discs fine but just will not recognise my UK or US games...

There seem to be quite a few different 4 wire chips about - the three or four I have seen pics of use different wiring points on the chips so presumably are not all from the same source.

:angry:

[EDIT]

Had a few emails back from the supplier - very helpful but no answer why!  They are sending me another so I cannot complain about the service.