diff --git a/ideas/hw.h b/ideas/hw.h
new file mode 100644
index 0000000..a11377f
--- /dev/null
+++ b/ideas/hw.h
@@ -0,0 +1,49 @@
+
+#include <stdint.h>
+
+#define MAX_N_PORTS			3
+#define MAX_PORT_PINS		15
+#define MAX_N_PIN_ALT_FUNC	8
+
+// TODO: correct mapping!
+static const uint8_t altFunc_List[MAX_N_PORTS][MAX_PORT_PINS] = {
+	{	// PORT A
+		0b01110000,
+		0b11110000,
+		0b01110000,
+		0b01110000,
+		0b11111000,
+		0b11110000,
+		0b11110110,
+		0b11111110,
+		0b11111000,
+		0b01111100,
+		0b11111000,
+		0b11111100,
+		0b11111100,
+		0b11100000,
+		0b11000000,
+		0b11110100
+	},
+	{	// PORT B
+		
+	},
+	{	// PORT F
+		0b00000000,
+		0b00000000,
+		0b00000000,
+		0b00000000,
+		0b00000000,
+		0b00000000,
+		0b00000000,
+		0b00000000,
+		0b00000000,
+		0b00000000,
+		0b00000000,
+		0b00000000,
+		0b00000000,
+		0b00000000,
+		0b00000000,
+		0b00000000,
+	}	
+};