Clearly nullDC is the better emulator. Demul lacks many features, has inferior compatibility and the user interface is worse.
If someone has PROBLEMS with nullDC, because of missing files, then install this:
First: Microsoft Visual C++ 2010 Redistributable Package (x86)
microsoft.com/ downloads/en/d ... bf0912db84
And then: DirectX End-User Runtime Web Installer
microsoft. com/downloads /en/d ... 6652cd92a3