add modem emulation (for online gaming)
some games needs a server to be really playable, for exemple:
- Digital Keiba Shinbun: My Trackman
- Grauen no Torikago Kapitel 1 - 6
- Planet Ring
- Sakura Taisen Online - Teito no Yuugana Hibi
- Sakura Taisen Online - Paris no Nagai Hibi
but many other games can also be played online with private servers http://www.dreamcastlive.net/blogs/tag/private%20server
Edited by bigboo