Quzar gives us the heads up of this release in our forums:
After maby months of coding, here is the first public beta of nullDC.
Read the ReadME before you ask anything.
Setup (includes all needed runtimes , recomended)
http://emudev.com/funstuff/nullDC_100b1_setup.rar
Plain files :
http://emudev.com/funstuff/nullDC_100b1.rar
Source: The nullDC forum @ NGEmu