4 files changed, 55 insertions, 0 deletions
diff --git a/examples/hx8kboard/.gitignore b/examples/hx8kboard/.gitignore
new file mode 100644
index 0000000..4b77d1b
--- /dev/null
+++ b/examples/hx8kboard/.gitignore
@@ -0,0 +1,3 @@
+example.bin
+example.blif
+example.txt
diff --git a/examples/hx8kboard/Makefile b/examples/hx8kboard/Makefile
new file mode 100644
index 0000000..551de32
--- /dev/null
+++ b/examples/hx8kboard/Makefile
@@ -0,0 +1,18 @@
+all: example.bin
+
+example.blif: example.v
+	yosys -p 'synth_ice40 -top top -blif example.blif' example.v
+
+example.txt: example.blif hx8kboard.pcf
+	arachne-pnr -d 8k -o example.txt -p hx8kboard.pcf example.blif
+
+example.bin: example.txt
+	icepack example.txt example.bin
+
+prog:
+	iceprog example.bin
+
+clean:
+	rm -f example.blif example.txt example.bin
+
+.PHONY: all prog clean
diff --git a/examples/hx8kboard/example.v b/examples/hx8kboard/example.v
new file mode 100644
index 0000000..9fc5a11
--- /dev/null
+++ b/examples/hx8kboard/example.v
@@ -0,0 +1,25 @@
+module top (
+	input  clk,
+	output LED0,
+	output LED1,
+	output LED2,
+	output LED3,
+	output LED4,
+	output LED5,
+	output LED6,
+	output LED7
+);
+
+	localparam BITS = 8;
+	localparam LOG2DELAY = 22;
+
+	reg [BITS+LOG2DELAY-1:0] counter = 0;
+	reg [BITS-1:0] outcnt;
+
+	always@(posedge clk) begin
+		counter <= counter + 1;
+		outcnt <= counter >> LOG2DELAY;
+	end
+	
+	assign {LED0, LED1, LED2, LED3, LED4, LED5, LED6, LED7} = outcnt ^ (outcnt >> 1);
+endmodule
diff --git a/examples/hx8kboard/hx8kboard.pcf b/examples/hx8kboard/hx8kboard.pcf
new file mode 100644
index 0000000..417ca01
--- /dev/null
+++ b/examples/hx8kboard/hx8kboard.pcf
@@ -0,0 +1,9 @@
+set_io LED0 B5
+set_io LED1 B4
+set_io LED2 A2
+set_io LED3 A1
+set_io LED4 C5
+set_io LED5 C4
+set_io LED6 B3
+set_io LED7 C3
+set_io clk J3