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Thanks for the help !
Sounds difficult BUT, i need to find differents way to go !

So, what do you think about this one, if i want to make a MMX2/3 with a MMX3 PCB.



I got 2 x 27C801, how can i do so to make a MM2 with a MMX2 PCB ?

thanks, here is my scheme, do you think its a good one ?

A friend of mine told me to just put together the #26 and #27 of the CX4.
Do you think its better if i use 2 x 27C801 ?

Ok thanks, since i know the pinout is correct, please can you tell me how i connect the 27C160 to the 2 MaskRom (i will withdraw them).
But can you tell me how to connect each other ?
A17 to A17 ? ....

Thanks again for helping. Since i'm a beginner i will try to go step by step : 1) I withdraw the 2 maskroms (in red) https://preview.ibb.co/bGCO7d/SHVC_ARXJ_JPN.jpg delete change account 2) I take my 27C160 : https://image.ibb.co/n2R0nd/27C160.jpg 3) What is the right Pinout About the Maskrom of MMX...

The actual literal contents of the ROM control whether the cart can address two 1 MiB ROMs or one 2 MiB ROM. MMX2, 1.5MiB, always was on 2 ROMs. MMX3, 2 MiB, was always on 1 ROM. I really understand that. But do you agree when i say its possible to use 1 x 27C160 on the PCB of MMX 2 ? On the 2DC0N ...

- cx4.jpg : Are the number correct ?? Because they told me i have to connect two pins after that, but i want to be sure the numbers are in the good places.. Yes, the silkscreened numbers are correct. Nocash has a pinout here . Thanks to be the first to very help me... - SHVC-ARXJ-JPN.jpg : I want t...

Hi to this community ! Nice to meet you guys ! First of all thanks for your Channel ! I'm a French beginner Carmtodder and I'm Trying to do a Rockman X2 in French... Many forum in France are not so cool, and i tried to have help but no... I send you 2 pics : - cx4.jpg : Are the number correct ?? Bec...