I have another thread in the hardware section on this topic, but I have now found that U18 and U19 in my machine are not the same that are dumped in the MAME sets. The checksums are different.
Now the odd part is the manual states that dip5 is unused and just defaulted off, however on my machine it is in the ON position. When in the ON position the game passes the rom checks at boot with the unknown U18 and U19, if I switch it to OFF it fails them as bad red, the game boots and still seems to run fine.
Trying to one figure out how the dip switch could cause the change in post, two if these are valid roms, and three what does U18 and U19 control that might act wrong if they are bad.
Any thoughts?
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