RL78 sim?

[Richard Hulme]

Hi,

So far I've been testing with hardware but I'm pretty sure I read 
somewhere about an RL78 simulator, which would be a useful addition. 
Does this simulator exist, and if so, how do I run the tests against it?

I tried 'make -k check RUNTESTFLAGS="--target_board=rl78-sim"' but in 
amongst the errors I see 'ERROR: couldn't load description file for 
rl78-sim', either it has a different name or I'm missing something on my 
system (and a quick search didn't seem to find anything but I don't 
really know what I'm looking for).

Regards,

Richard.