non free app in fdroid repository

[J.B. Nicholson-Owens]

Ciaran Gultnieks wrote:
> It says that "freeware for non-commercial use" thing on the about
> screen, but the software is definitely GPL, as per its web site and the
> copyright notices in each source file.

"freeware" is a problematic term in that it has no consistent 
definition.  This ROM image's source code appears to me to be non-free 
software because its source code is (as far as I know) unavailable under 
a free software license.  This ROM image file (a binary) is non-free 
because it may only be distributed non-commercially.

Is the source code for this ROM image available under a free license? 
Can we make a new ROM image file from free source code?

> As for the inclusion of the ROM image, I'm not convinced that makes the
> application itself non-free software. Are you?

A free program that requires non-free software to work is useless in the 
free world.  If there were a free replacement for the ROM image file, or 
if the software in the ROM image were reimplemented and built into the 
emulator so one didn't need that ROM image file at all, then this C64 
emulator would be useful in the free world.