diff --git a/examples/Makefile b/examples/Makefile
index bec1d108..4a720dd5 100644
--- a/examples/Makefile
+++ b/examples/Makefile
@@ -120,7 +120,7 @@ nanolcd-tangnano-synth.json: nanolcd/TOP.v nanolcd/VGAMod.v
 	$(YOSYS) -D LEDS_NR=3 -D OSC_TYPE_OSCZ -p "read_verilog $^; synth_gowin -json $@"
 
 %-tangnano4k-synth.json: %.v
-	$(YOSYS) -D LEDS_NR=6 -D OSC_TYPE_OSCZ -p "read_verilog $^; synth_gowin -json $@"
+	$(YOSYS) -D LEDS_NR=1 -D OSC_TYPE_OSCZ -p "read_verilog $^; synth_gowin -json $@"
 
 %-tangnano9k-synth.json: %.v
 	$(YOSYS) -D LEDS_NR=6 -D OSC_TYPE_OSC -p "read_verilog $^; synth_gowin -json $@"
diff --git a/examples/tangnano4k.cst b/examples/tangnano4k.cst
index 819dbd2d..be3bd7d3 100644
--- a/examples/tangnano4k.cst
+++ b/examples/tangnano4k.cst
@@ -1,14 +1,24 @@
 // these are the HDMI pins!
-IO_LOC "led[0]" 27;
-IO_LOC "led[1]" 28;
-IO_LOC "led[2]" 29;
-IO_LOC "led[3]" 30;
-IO_LOC "led[4]" 31;
-IO_LOC "led[5]" 32;
+// in NP pairs
+//TXC
+IO_LOC "hdmi[0]" 27;
+IO_LOC "hdmi[1]" 28;
+//TX0
+IO_LOC "hdmi[2]" 29;
+IO_LOC "hdmi[3]" 30;
+//TX1
+IO_LOC "hdmi[4]" 31;
+IO_LOC "hdmi[5]" 32;
+//TX2
+IO_LOC "hdmi[6]" 34;
+IO_LOC "hdmi[7]" 35;
+
+//Buttons
 IO_LOC "key" 15;
 IO_LOC "rst" 14;
-IO_LOC "clk" 45;
 
+IO_LOC "led" 10;
+IO_LOC "clk" 45;
 
 // true LVDS pins
 IO_LOC "tlvds_p" 35,34;