Define t_mem_ctlr_mosi/miso in common_mem_pkg, to use that instead of the records defined in tech_ddr_pkg. Also remove t_tech_ddr_addr record because it is not needed.

Check UNSIGNED(wr_fifo_usedw) < c_dp_factor, because a mixed width FIFO cannot always be flushed completely empty, which is ok.diff

Use ctlr slv address instead of record address. Separate p_burst_size into wr and rd process and define burstsize as positive. Assign ctlr_mosi.burstsize directly using wr/rd_burst_size, no need for ctlr_mosi_burstsize.

Added io_ddr_cross_domain.vhd to handle dvr_clk and ctlr_clk domains in case they are different clock domains.

 . Quartus 14.1
 . Modelsim 10.4
 . Modelsim 6.6c path now includes '6.6c' as subdir.
-Note: dop233 has local mods that point to its own install dirs.