For anyone who's interested, I've begun porting the map function used in the pink reorder blocks to 10.1. For complex reorderings, the green block seems to be inefficient since it implements the map using ROM rather than logic as was done in the pink blocks. Ideally, the synthesis tool would automatically apply logic reduction to the ROM and the two would be equivalent in implementation, but this does not seem to be the case. I plan to add an option to the 10.1 FFT block to use either the logic based or ROM based map, but in case I get side tracked, I wanted to share what I've done so far. It is not yet tested. The code is here: http://casper.berkeley.edu/svn/trunk/caltech/lib10.1/map_init.m
Glenn
