From: Eddie Hung <eddie@fpgeh.com>
Date: Fri, 4 Oct 2019 17:34:16 +0000 (-0700)
Subject: Ohmilord this wasn't added all this time!?!
X-Git-Tag: working-ls180~1015
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=c0f54d3fd5e2492afbe1717a67ea78f3be7f6b39;p=yosys.git

Ohmilord this wasn't added all this time!?!
---

diff --git a/techlibs/ice40/abc_model.v b/techlibs/ice40/abc_model.v
new file mode 100644
index 000000000..89961b51d
--- /dev/null
+++ b/techlibs/ice40/abc_model.v
@@ -0,0 +1,29 @@
+(* abc9_box_id = 1, lib_whitebox *)
+module \$__ICE40_CARRY_WRAPPER (
+	(* abc_carry *)
+	output CO,
+	output O,
+	input A, B,
+	(* abc_carry *)
+	input CI,
+	input I0, I3
+);
+	parameter LUT = 0;
+	SB_CARRY carry (
+		.I0(A),
+		.I1(B),
+		.CI(CI),
+		.CO(CO)
+	);
+	SB_LUT4 #(
+		.LUT_INIT(LUT)
+	) adder (
+		.I0(I0),
+		.I1(A),
+		.I2(B),
+		.I3(I3),
+		.O(O)
+	);
+endmodule
+
+