I found this interesting document about connecting X68000 to ADSL trhough RS-232C(serial) , it would be nice if someone could translate it in order to do some testing:
http://homepage2.nifty.com/beam-igarashi/adsl68k/ (http://homepage2.nifty.com/beam-igarashi/adsl68k/)
Good find Caius !
A router with RS232 is required for it to work. The author refers to NTT-ME MN128-SOHO SL11 but IMHO others, such as NTT-ME MN128-SOHO IB3 could work as-well.
★☆NTT-ME MN128-SOHO IB3☆★
http://page16.auctions.yahoo.co.jp/jp/auction/u42564885 (http://page16.auctions.yahoo.co.jp/jp/auction/u42564885)
★☆NTT-ME MN128-SOHO IB3☆★ No.3
http://page2.auctions.yahoo.co.jp/jp/auction/b138391111 (http://page2.auctions.yahoo.co.jp/jp/auction/b138391111)
★☆NTT-ME MN128-SOHO IB3☆★ No.2
http://page18.auctions.yahoo.co.jp/jp/auction/w77785051 (http://page18.auctions.yahoo.co.jp/jp/auction/w77785051)
And then the most interesting part is where he explains how to set up the X68000 environment in chapter 2.
http://translate.google.com/translate?sl=ja&tl=en&js=n&prev=_t&hl=en&ie=UTF-8&layout=2&eotf=1&u=http%3A%2F%2Fhomepage2.nifty.com%2Fbeam-igarashi%2Fadsl68k%2F (http://translate.google.com/translate?sl=ja&tl=en&js=n&prev=_t&hl=en&ie=UTF-8&layout=2&eotf=1&u=http%3A%2F%2Fhomepage2.nifty.com%2Fbeam-igarashi%2Fadsl68k%2F)
Eidis