Messiah 750 for the PAL Slim 75004CB PS-2 diagrams...

[retroborg]

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:
http://www.konsolenchip.at/vers.php
I think it’s a GH-040-12 PCB.

I got this Messiah 750 Mod Chip for the V14/V15/V16 PS-2.


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

http://img462.imageshack.us/img462/6464/v14gh03731diagram4cs.jpg

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]

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.

[ps2daddy]

Sounds like the messiah 750 is a clone chip never heard of it
I cant give you too much info on the one try asking at ps2-scene.org