Raster Engraving with EMC2

Has anyone tried raster engraving with EMC2? I was reading about Graster and it looks interesting: http://wiki.linuxcnc.org/cgi-bin/wiki.p ... th_A_Laser
I'd like to be able to do some raster engraving without investing in a DSP board just yet.
I'd like to be able to do some raster engraving without investing in a DSP board just yet.