Links:
Marcus Comstedt's DC Development
Ngine
Dan Potter (libdream/KOS)
Boob!
Hitmen
Andrew Kieschnick (dc-loader)
Booyaka
Sega Dreamcast VMU development tools
Linux for Dreamcast
The Linux Interrupt Controller (Dreamcast Specific)
NetBSD for Dreamcast
Documentation:
SH7750 Main Index
SH7750 Programming manual
SH7750 Hardware Manual
Redhat's GNUPro SH calling conventions (ASM)
Mailing list:
Yahoo's dcdev mailing list
IRC:
irc.openprojects.net:6667 #linuxdc
efnet.demon.co.uk:6667 #dcdev