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pacoarcade

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Hi,

I got this game some time ago. It plays fine and I can't detect any problem, but running the scroll ram test I get "H13 BAD". I like my games to be 100% working so I'm trying to repair it.

I have tried two different 65256 sram modules (10ns) and I continue getting the same error. TTL chips G11, G12, J15 and J16 test good with my TL866a.

I can live with this, but I'd love the game to pass all the tests. Any idea?
 
Which version of Shinobi is it? Decrypted ROMs?
It could also be the custom chip failing (adding delay to the signal processing?).
 
I've compared the EPR roms with mame database and it matches with set 3. It has a normal Motorola 68000 with a sticker, an encrypted Z80 317-0054 and no Intel 8751 MCU.
 
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