A port of PNesX emulator for PC has been released for the dreamcast. It is being called FrNES. ReGex is the programmer and he just sent me word. FrNES currently runs faster then NesterDC but no sound is implemented. Here are some details:

-Mapper support is the same as the Playstation original. (0-3)
-Sound is unsupported. It will be once the rest of the emu is faster.
-CPU is a modified version of the original pNESx core, which is a
modified version of Marat’s M6502.
-I’m still drawing directly to the framebuffer. I will attempt
to use the PowerVR chip for the whole emu at some point (and perhaps
stop you epileptics in the audience from having seizures at the
menu screen… sorry there).
-SRAM saving is unsupported

Pick it up on the FrNES page.