diff --git a/contiki-c64/uip/cs8900a.h b/contiki-c64/uip/cs8900a.h
new file mode 100644
index 0000000..b6f1a4c
--- /dev/null
+++ b/contiki-c64/uip/cs8900a.h
@@ -0,0 +1,10 @@
+#ifndef __CS8900A_H__
+#define __CS8900A_H__
+
+#include "uip_arch.h"
+
+void cs8900a_init(void);
+void cs8900a_send(void);
+u8_t cs8900a_poll(void);
+
+#endif /* __CS8900A_H__ */