1 files changed, 27 insertions, 0 deletions
diff --git a/techlibs/ecp5/abc9_map.v b/techlibs/ecp5/abc9_map.v
new file mode 100644
index 000000000..113a35b91
--- /dev/null
+++ b/techlibs/ecp5/abc9_map.v
@@ -0,0 +1,27 @@
+// ---------------------------------------
+
+// Attach a (combinatorial) black-box onto the output
+//   of this LUTRAM primitive to capture its
+//   asynchronous read behaviour
+module TRELLIS_DPR16X4 (
+	(* techmap_autopurge *) input  [3:0] DI,
+	(* techmap_autopurge *) input  [3:0] WAD,
+	(* techmap_autopurge *) input        WRE,
+	(* techmap_autopurge *) input        WCK,
+	(* techmap_autopurge *) input  [3:0] RAD,
+	output [3:0] DO
+);
+	parameter WCKMUX = "WCK";
+	parameter WREMUX = "WRE";
+	parameter [63:0] INITVAL = 64'h0000000000000000;
+    wire [3:0] $DO;
+
+    TRELLIS_DPR16X4 #(
+      .WCKMUX(WCKMUX), .WREMUX(WREMUX), .INITVAL(INITVAL)
+    ) _TECHMAP_REPLACE_ (
+      .DI(DI), .WAD(WAD), .WRE(WRE), .WCK(WCK),
+      .RAD(RAD), .DO($DO)
+    );
+
+    $__ABC9_DPR16X4_COMB do (.$DO($DO), .RAD(RAD), .DO(DO));
+endmodule