Subversion Repositories heap_sorter

This version is prepared for very high-speed setups.
The memory uses additional output register.

The comparator also uses additional pipeline register, and is moved 
from the function defined in sorter_pkg.vhd to the external block:
sorter_cmp_lt.vhd.
That allows implementation better suited to the particular technology
(e.g., usage of DSP48 blocks in Xilinx).
IT IS IMPORTANT THAT THIS BLOCKS HAS EXACTLY 1 CLOCK LATENCY!

The sorter user 4 clock cycles per word, but clock frequency may be
much higher.