This is made by Puresabe, http://borokobo.web.fc2.com/
This only contains the sliding fix from the optimization patch, nothing else. 

Patch to "Rockman 6 - Shijou Saidai no Tatakai!!.nes"
SHA-1 316BEA6B2AEF7E5ECDE995EAB4AD99DB78F85C34

DOES NOT WORK ON USA ROM! For now maybe, if I can figure it out.
In case you downloaded this from romkhacking site as submission 
and not from the forums, then I have failed, sorry, maybe you can do better?
No? Oh well, it's not like there's much text in this game anyway. 