Merge pull request #1574 from YosysHQ/eddie/xilinx_lutram

xilinx: add LUTRAM rules for RAM32M, RAM64M

1 files changed, 42 insertions, 0 deletions

diff --git a/tests/arch/common/lutram.v b/tests/arch/common/lutram.v
new file mode 100644
index 000000000..9534b7619
--- /dev/null
+++ b/tests/arch/common/lutram.v
@@ -0,0 +1,42 @@
+module lutram_1w1r
+#(parameter D_WIDTH=8, A_WIDTH=6)
+(
+	input [D_WIDTH-1:0] data_a,
+	input [A_WIDTH:1] addr_a,
+	input we_a, clk,
+	output reg [D_WIDTH-1:0] q_a
+);
+	// Declare the RAM variable
+	reg [D_WIDTH-1:0] ram[(2**A_WIDTH)-1:0];
+
+	// Port A
+	always @ (posedge clk)
+	begin
+		if (we_a)
+			ram[addr_a] <= data_a;
+		q_a <= ram[addr_a];
+	end
+endmodule
+
+
+module lutram_1w3r
+#(parameter D_WIDTH=8, A_WIDTH=5)
+(
+	input [D_WIDTH-1:0] data_a, data_b, data_c,
+	input [A_WIDTH:1] addr_a, addr_b, addr_c,
+	input we_a, clk,
+	output reg [D_WIDTH-1:0] q_a, q_b, q_c
+);
+	// Declare the RAM variable
+	reg [D_WIDTH-1:0] ram[(2**A_WIDTH)-1:0];
+
+	// Port A
+	always @ (posedge clk)
+	begin
+		if (we_a)
+			ram[addr_a] <= data_a;
+		q_a <= ram[addr_a];
+		q_b <= ram[addr_b];
+		q_c <= ram[addr_c];
+	end
+endmodule