diff --git a/src/main.ucf b/src/main.ucf
new file mode 100644
index 0000000..f1daf7e
--- /dev/null
+++ b/src/main.ucf
@@ -0,0 +1,70 @@
+NET "sys_clock" LOC = AH15;
+NET "sys_clock" PERIOD = 100 MHz HIGH 50%;
+
+NET "ddr_clock_p" LOC = L19 | DIFF_TERM = TRUE;
+NET "ddr_clock_n" LOC = K19 | DIFF_TERM = TRUE;
+NET "ddr_clock_p" TNM_NET = "CLK_200";
+TIMESPEC "TS_CLK_200" = PERIOD "CLK_200" 5 ns HIGH 50%;
+# ddr_clock_n period doesn't need to be specified
+
+NET "reset" LOC="AJ6"; # Bank 18, Vcco=3.3V, No DCI, Center
+
+NET "clock_led" LOC="AG12"; # LED South
+NET "reset_led" LOC="E8"; # LED Center
+
+NET "uart_rx" LOC="AG15";
+NET "uart_tx" LOC="AG20";
+
+NET "led_0" LOC = H18; # no DCI
+NET "led_1" LOC = L18; # no DCI
+NET "led_2" LOC = G15; # no DCI
+NET "led_3" LOC = AD26 | IOSTANDARD = LVCMOS18;
+NET "led_4" LOC = G16; # no DCI
+NET "led_5" LOC = AD25 | IOSTANDARD = LVCMOS18;
+NET "led_6" LOC = AD24 | IOSTANDARD = LVCMOS18;
+NET "led_7" LOC = AE24 | IOSTANDARD = LVCMOS18;
+
+NET "dip_0" LOC="U25" | IOSTANDARD = LVCMOS18;
+NET "dip_1" LOC="AG27" | IOSTANDARD = LVCMOS18;
+NET "dip_2" LOC="AF25" | IOSTANDARD = LVCMOS18;
+NET "dip_3" LOC="AF26" | IOSTANDARD = LVCMOS18;
+NET "dip_4" LOC="AE27" | IOSTANDARD = LVCMOS18;
+NET "dip_5" LOC="AE26" | IOSTANDARD = LVCMOS18;
+NET "dip_6" LOC="AC25" | IOSTANDARD = LVCMOS18;
+NET "dip_7" LOC="AC24" | IOSTANDARD = LVCMOS18;
+
+# HDR1 2–12
+NET "sdio_clk" LOC="H33"; # Bank 11, Vcco=2.5V or 3.3V user selectable by J20
+NET "sdio_cmd" LOC="F34"; # Bank 11, Vcco=2.5V or 3.3V user selectable by J20
+NET "sdio_dat[3]" LOC="H34"; # Bank 11, Vcco=2.5V or 3.3V user selectable by J20
+NET "sdio_dat[2]" LOC="G33"; # Bank 11, Vcco=2.5V or 3.3V user selectable by J20
+NET "sdio_dat[1]" LOC="G32"; # Bank 11, Vcco=2.5V or 3.3V user selectable by J20
+NET "sdio_dat[0]" LOC="H32"; # Bank 11, Vcco=2.5V or 3.3V user selectable by J20
+
+# HDR1 14–20
+NET "jtag_TCK" LOC="J32" | PULLUP | CLOCK_DEDICATED_ROUTE = FALSE; # Bank 11, Vcco=2.5V or 3.3V user selectable by J20
+NET "jtag_TMS" LOC="J34" | PULLUP; # Bank 11, Vcco=2.5V or 3.3V user selectable by J20
+NET "jtag_TDI" LOC="L33" | PULLUP; # Bank 11, Vcco=2.5V or 3.3V user selectable by J20
+NET "jtag_TDO" LOC="M32" | PULLUP; # Bank 11, Vcco=2.5V or 3.3V user selectable by J20
+
+# Termial DVI
+NET "dvi_d(0)" LOC = AB8;
+NET "dvi_d(1)" LOC = AC8;
+NET "dvi_d(2)" LOC = AN12;
+NET "dvi_d(3)" LOC = AP12;
+NET "dvi_d(4)" LOC = AA9;
+NET "dvi_d(5)" LOC = AA8;
+NET "dvi_d(6)" LOC = AM13;
+NET "dvi_d(7)" LOC = AN13;
+NET "dvi_d(8)" LOC = AA10;
+NET "dvi_d(9)" LOC = AB10;
+NET "dvi_d(10)" LOC = AP14;
+NET "dvi_d(11)" LOC = AN14;
+NET "dvi_clk_p" LOC = AL11;
+NET "dvi_clk_n" LOC = AL10;
+NET "dvi_hsync" LOC = AM12;
+NET "dvi_vsync" LOC = AM11;
+NET "dvi_de" LOC = AE8;
+NET "dvi_reset" LOC = AK6;
+NET "dvi_i2c_scl" LOC = U27 | IOSTANDARD = LVCMOS18;
+NET "dvi_i2c_sda" LOC = T29 | IOSTANDARD = LVCMOS18;