6 files changed, 169 insertions, 0 deletions
diff --git a/fpga_interchange/examples/tests/CMakeLists.txt b/fpga_interchange/examples/tests/CMakeLists.txt
index f58adc70..29106f12 100644
--- a/fpga_interchange/examples/tests/CMakeLists.txt
+++ b/fpga_interchange/examples/tests/CMakeLists.txt
@@ -5,3 +5,4 @@ add_subdirectory(ram)
 add_subdirectory(ff)
 add_subdirectory(lut)
 add_subdirectory(lut_nexus)
+add_subdirectory(lutram)
diff --git a/fpga_interchange/examples/tests/lutram/CMakeLists.txt b/fpga_interchange/examples/tests/lutram/CMakeLists.txt
new file mode 100644
index 00000000..0d45e8f8
--- /dev/null
+++ b/fpga_interchange/examples/tests/lutram/CMakeLists.txt
@@ -0,0 +1,8 @@
+add_interchange_group_test(
+    name lutram
+    family ${family}
+    board_list basys3
+    tcl run.tcl
+    sources lutram.v
+)
+
diff --git a/fpga_interchange/examples/tests/lutram/basys3.pcf b/fpga_interchange/examples/tests/lutram/basys3.pcf
new file mode 100644
index 00000000..cb4191cc
--- /dev/null
+++ b/fpga_interchange/examples/tests/lutram/basys3.pcf
@@ -0,0 +1,41 @@
+# basys3 100 MHz CLK
+set_io clk W5
+
+set_io tx A18
+set_io rx B18
+#
+# in[0:15] correspond with SW0-SW15 on the basys3
+set_io sw[0] V17
+set_io sw[1] V16
+set_io sw[2] W16
+set_io sw[3] W17
+set_io sw[4] W15
+set_io sw[5] V15
+set_io sw[6] W14
+set_io sw[7] W13
+set_io sw[8] V2
+set_io sw[9] T3
+set_io sw[10] T2
+set_io sw[11] R3
+set_io sw[12] W2
+set_io sw[13] U1
+set_io sw[14] T1
+set_io sw[15] R2
+
+# out[0:15] correspond with LD0-LD15 on the basys3
+set_io led[0] U16
+set_io led[1] E19
+set_io led[2] U19
+set_io led[3] V19
+set_io led[4] W18
+set_io led[5] U15
+set_io led[6] U14
+set_io led[7] V14
+set_io led[8] V13
+set_io led[9] V3
+set_io led[10] W3
+set_io led[11] U3
+set_io led[12] P3
+set_io led[13] N3
+set_io led[14] P1
+set_io led[15] L1
diff --git a/fpga_interchange/examples/tests/lutram/basys3.xdc b/fpga_interchange/examples/tests/lutram/basys3.xdc
new file mode 100644
index 00000000..58e1859c
--- /dev/null
+++ b/fpga_interchange/examples/tests/lutram/basys3.xdc
@@ -0,0 +1,80 @@
+# basys3 100 MHz CLK
+set_property PACKAGE_PIN W5 [get_ports clk]
+
+set_property PACKAGE_PIN A18 [get_ports tx]
+set_property PACKAGE_PIN B18 [get_ports rx]
+#
+# in[0:15] correspond with SW0-SW15 on the basys3
+set_property PACKAGE_PIN V17 [get_ports sw[0]]
+set_property PACKAGE_PIN V16 [get_ports sw[1]]
+set_property PACKAGE_PIN W16 [get_ports sw[2]]
+set_property PACKAGE_PIN W17 [get_ports sw[3]]
+set_property PACKAGE_PIN W15 [get_ports sw[4]]
+set_property PACKAGE_PIN V15 [get_ports sw[5]]
+set_property PACKAGE_PIN W14 [get_ports sw[6]]
+set_property PACKAGE_PIN W13 [get_ports sw[7]]
+set_property PACKAGE_PIN V2  [get_ports sw[8]]
+set_property PACKAGE_PIN T3  [get_ports sw[9]]
+set_property PACKAGE_PIN T2  [get_ports sw[10]]
+set_property PACKAGE_PIN R3  [get_ports sw[11]]
+set_property PACKAGE_PIN W2  [get_ports sw[12]]
+set_property PACKAGE_PIN U1  [get_ports sw[13]]
+set_property PACKAGE_PIN T1  [get_ports sw[14]]
+set_property PACKAGE_PIN R2  [get_ports sw[15]]
+
+# out[0:15] correspond with LD0-LD15 on the basys3
+set_property PACKAGE_PIN U16 [get_ports led[0]]
+set_property PACKAGE_PIN E19 [get_ports led[1]]
+set_property PACKAGE_PIN U19 [get_ports led[2]]
+set_property PACKAGE_PIN V19 [get_ports led[3]]
+set_property PACKAGE_PIN W18 [get_ports led[4]]
+set_property PACKAGE_PIN U15 [get_ports led[5]]
+set_property PACKAGE_PIN U14 [get_ports led[6]]
+set_property PACKAGE_PIN V14 [get_ports led[7]]
+set_property PACKAGE_PIN V13 [get_ports led[8]]
+set_property PACKAGE_PIN V3  [get_ports led[9]]
+set_property PACKAGE_PIN W3  [get_ports led[10]]
+set_property PACKAGE_PIN U3  [get_ports led[11]]
+set_property PACKAGE_PIN P3  [get_ports led[12]]
+set_property PACKAGE_PIN N3  [get_ports led[13]]
+set_property PACKAGE_PIN P1  [get_ports led[14]]
+set_property PACKAGE_PIN L1  [get_ports led[15]]
+
+set_property IOSTANDARD LVCMOS33 [get_ports clk]
+
+set_property IOSTANDARD LVCMOS33 [get_ports tx]
+set_property IOSTANDARD LVCMOS33 [get_ports rx]
+#
+set_property IOSTANDARD LVCMOS33 [get_ports sw[0]]
+set_property IOSTANDARD LVCMOS33 [get_ports sw[1]]
+set_property IOSTANDARD LVCMOS33 [get_ports sw[2]]
+set_property IOSTANDARD LVCMOS33 [get_ports sw[3]]
+set_property IOSTANDARD LVCMOS33 [get_ports sw[4]]
+set_property IOSTANDARD LVCMOS33 [get_ports sw[5]]
+set_property IOSTANDARD LVCMOS33 [get_ports sw[6]]
+set_property IOSTANDARD LVCMOS33 [get_ports sw[7]]
+set_property IOSTANDARD LVCMOS33 [get_ports sw[8]]
+set_property IOSTANDARD LVCMOS33 [get_ports sw[9]]
+set_property IOSTANDARD LVCMOS33 [get_ports sw[10]]
+set_property IOSTANDARD LVCMOS33 [get_ports sw[11]]
+set_property IOSTANDARD LVCMOS33 [get_ports sw[12]]
+set_property IOSTANDARD LVCMOS33 [get_ports sw[13]]
+set_property IOSTANDARD LVCMOS33 [get_ports sw[14]]
+set_property IOSTANDARD LVCMOS33 [get_ports sw[15]]
+
+set_property IOSTANDARD LVCMOS33 [get_ports led[0]]
+set_property IOSTANDARD LVCMOS33 [get_ports led[1]]
+set_property IOSTANDARD LVCMOS33 [get_ports led[2]]
+set_property IOSTANDARD LVCMOS33 [get_ports led[3]]
+set_property IOSTANDARD LVCMOS33 [get_ports led[4]]
+set_property IOSTANDARD LVCMOS33 [get_ports led[5]]
+set_property IOSTANDARD LVCMOS33 [get_ports led[6]]
+set_property IOSTANDARD LVCMOS33 [get_ports led[7]]
+set_property IOSTANDARD LVCMOS33 [get_ports led[8]]
+set_property IOSTANDARD LVCMOS33 [get_ports led[9]]
+set_property IOSTANDARD LVCMOS33 [get_ports led[10]]
+set_property IOSTANDARD LVCMOS33 [get_ports led[11]]
+set_property IOSTANDARD LVCMOS33 [get_ports led[12]]
+set_property IOSTANDARD LVCMOS33 [get_ports led[13]]
+set_property IOSTANDARD LVCMOS33 [get_ports led[14]]
+set_property IOSTANDARD LVCMOS33 [get_ports led[15]]
diff --git a/fpga_interchange/examples/tests/lutram/lutram.v b/fpga_interchange/examples/tests/lutram/lutram.v
new file mode 100644
index 00000000..be5728f8
--- /dev/null
+++ b/fpga_interchange/examples/tests/lutram/lutram.v
@@ -0,0 +1,22 @@
+module top (
+    input  wire clk,
+
+    input  wire rx,
+    output wire tx,
+
+    input  wire [15:0] sw,
+    output wire [15:0] led
+);
+    RAM128X1D ram_i (
+        .WCLK(clk),
+        .A(sw[6:0]),
+        .DPRA(sw[13:7]),
+        .WE(sw[14]),
+        .D(sw[15]),
+        .SPO(led[0]),
+        .DPO(led[1]),
+    );
+
+    assign led[15:2] = 14'b0;
+    assign tx = rx;
+endmodule
diff --git a/fpga_interchange/examples/tests/lutram/run.tcl b/fpga_interchange/examples/tests/lutram/run.tcl
new file mode 100644
index 00000000..79321139
--- /dev/null
+++ b/fpga_interchange/examples/tests/lutram/run.tcl
@@ -0,0 +1,17 @@
+yosys -import
+
+foreach src $::env(SOURCES) {
+    read_verilog $src
+}
+
+synth_xilinx -flatten -nolutram -nowidelut -nosrl -nocarry -nodsp
+techmap -map $::env(TECHMAP)
+
+# opt_expr -undriven makes sure all nets are driven, if only by the $undef
+# net.
+opt_expr -undriven
+opt_clean
+
+setundef -zero -params
+
+write_json $::env(OUT_JSON)