Older Adapter [Help]

Hello,

I'm constructing an adapter MVS AES for me exactly, and is a little complicated it.
I would like to know, if somebody has the schematical diagram of the old adapters, the ones that works with the games up to 98, would be of great utility for me, since I prefer the old games =)

Thanks!



Sorry the errors of writing, because I don't speak english very well...