Genram g_show_ahead_legacy_mode does not work for virtex6
It seems the new generic g_show_ahead_legacy_mode
will not work for virtex6, as modules/genrams/xilinx/virtex6/generic_sync_fifo.vhd
module does not include the g_show_ahead_legacy_mode
, but the component declaration at modules/genrams/genram_pkg.vhd
does.