Searching about all SNES emulators on Dreamcast and therefore Dreamsnes is closed source and Snes4all is unable to compile due lost Chui dependencies , maybe this another project named súper Famicast can be used for something ...
Dated from 2004.
Ported and coded by Scherzo.
Use SH4 assembler core courtesy of Dreamsnes.
Based on snes9x 1.42 emulator.
Comes in source code ,compiled and discs form.
V1 and V2.sourceforge superfamicast code