Quoted from Knxwledge:Also, in the download from IPDB I found, it has 4 ROM files, and in the README, the positions listed don't match the positions my ROMs are in. Mine are in U2, U6, U7
U7 is 6810 ram.
You likely have/had combined rom files for U1, U2, and U6. (which would be used in u2 and u6)