yosys/techlibs/nexus/lrams.txt

ram huge $__NX_DPSC512K_ {
	abits 14;
	width 32;
	byte 8;
	cost 2048;
	init no_undef;
	port srsw "A" "B" {
		clock posedge "C";
		clken;
		wrbe_separate;
		rdwr no_change;
		option "RESETMODE" "SYNC" {
			rdsrst zero gated_clken;
		}
		option "RESETMODE" "ASYNC" {
			rdarst zero;
		}
		rdinit zero;
		wrtrans all old;
	}
}