The Datach uses a different package for its LZ93D50 than the other parts. As far as we know, the IC itself is compatible, but it's hooked up differently and you'll have to rewire quite a lot.
Naruko has notes in Japanese:
http://seesaawiki.jp/famicomcartridge/d/Bandai%20Datach ;
http://seesaawiki.jp/famicomcartridge/d ... 20standardMost pertinently, the Datach games
do not support CHR RAM banking at all, and instead just support a flat 8 KiB chunk; additionally, if you want to support the external EEPROM, you'll have to disconnect PPU A12 from the IC and tie that input low.