This is embarasing. Also read (and re-read the docs)
I'm starting to get somewhere, I'm building download locations and a helppages to make it easier for the Mac newbie to set up EUAE.
I have now got a starting point of a working Amiga on my Mac, I was using a limited account, and needed to make changes in an Admin account. I did this low level installation stuff with fast user switching.
Thing is I was in the middle of rendering and saving an H264 movie. I was stunned to see my movie still happily rendering away for me, whilst me (as another user) made an alteration to the OS, and then ran EUAE with my movie still rendering in my limited profile.
Erm, my emulated Amiga seems to be running at full speed, even though I am rendering a movie, and typing on this forum.
The Mac is awsome to do all this at once, so easily.
Now all I have to do is configure it, put my fav games one click away, then try to configure my Sony playstation joypad through a USB converter, not sure if that works in this version of EUAE.
I have the hard disk contents from my A1200 to move, another vitual HD to make containing AIAB and another containing Amiga Forever.
My movie is still rendering, and my Virtual Amiga is asking me to insert a floppy.
Thanks for the help, I have been weak and also purchased the Cloanto 2005 CD/DVD set as I feel an Amiga nastalgia weekend approaching :-)