I was hoping that it is - or will be possible to:
a.) use 2 raphics cards in a mac pro ( judging from current setup that would result in 1 output for the desktop - 5out of 6 for madmapper.
b.) - this is where it gets tricky: 1 output for a lcdscreen, - 5 outputs for a combination of displayport/dvi triplehead2 go's for a combined madmapper "workspace" of 15 projektor outputs). (insert evil grin here).
Hows that sounding Boris & Co?
