Messiah 750 for the 75004CB PS-2 diagrams & Points...

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Messiah 750 for the 75004CB PS-2 diagrams & Points...

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retroborg

Member

20. March 2006 @ 11:52

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Hello,
I?m going to mod this ?Slim? EURO PAL PS-2 model 75004CB.
I have not opened it up yet but judging by this table:
[url]http://www.konsolenchip.at/vers.php[/url]
I think it?s a GH-040-12 PCB.

I got this Messiah 750 Mod Chip for the V14/V15/V16 PS-2.
[IMG]http://www.cj-inter.com/modchip/small%20image/Messiah%20750%20for...

And these diagrams came with it:
[url]http://img518.imageshack.us/img518/2708/gh04012logo6dq.jpg[/url]

[url]http://img462.imageshack.us/img462/6464/v14gh03731diagram4cs.jpg[/url]

But I?m not quite sure if they?re right?
By the way, is the ?H? point of this chip only used for the USA/JPN NTSC PCBs, same as the Matrix Infinity point ?H??

Can anybody post the right diagrams for the 75004CB model and for the rest of the PAL 7500X V14/V15/V16 PS-2s?

Any help will be highly appreciated.
Thanks in advance.

retroborg

Member

20. March 2006 @ 23:53

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Hello,
I was told that the Messiah 750 uses the exact same points as the H2O Chips so could I alternatively use these diagrams:

H2O Chip
http://d-vices.com/subzero/h2o-16.jpg

http://d-vices.com/subzero/diagrams.php

Instead of these:

M750 Chip
http://img518.imageshack.us/img518/2708/gh04012logo6dq.jpg

http://www.70kchip.com/Ps2chips/messiah750.htm

Someone mentioned that it is not need to connect point ?Z? on the PAL 75004 Slim PS-2 as that point is only needed for the multi CD games and it could cause problems, but I?m not sure about that?

Also I noticed a few differences in the operation of the two chips:

Messiah 750 operations:
http://www.70kchip.com/Ps2chips/messiah750.htm

H2O Chip operations
http://d-vices.com/subzero/guides.php

Would the H2O Reset operations work for the M750 as well?

Thanks in advance.


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