diff --git a/cpu/6502/Makefile.6502 b/cpu/6502/Makefile.6502
index 44e7d1626..4653d60c1 100644
--- a/cpu/6502/Makefile.6502
+++ b/cpu/6502/Makefile.6502
@@ -30,7 +30,7 @@
 #
 # Author: Oliver Schmidt <ol.sc@web.de>
 #
-# $Id: Makefile.6502,v 1.31 2010/02/04 23:52:30 oliverschmidt Exp $
+# $Id: Makefile.6502,v 1.32 2010/09/28 23:02:16 oliverschmidt Exp $
 #
 
 ifndef CC65_HOME
@@ -52,6 +52,11 @@ CONTIKI_SOURCEFILES += $(CTK) ctk-conio.c petsciiconv.c cfs-posix-dir.c \
                        
 TARGET_LIBFILES = $(TARGET).lib
 
+ifdef ETHERNET
+  CONTIKI_SOURCEFILES += $(ETHERNET)-eth.S
+  CFLAGS += -DETHERNET=$(ETHERNET)
+endif
+
 ### Compiler definitions
 
 AS = ca65
@@ -87,3 +92,8 @@ CUSTOM_RULE_C_TO_CO = 1
 
 %.eth: $(OBJECTDIR)/%.o
 	$(LD) -t module -m $@.map $< -o $@
+
+ifdef ETHERNET
+$(ETHERNET)-eth.S: $(ETHERNET).eth
+	co65 --code-label _$(ETHERNET) -o $@ $<
+endif
diff --git a/cpu/6502/net/ethernet.c b/cpu/6502/net/ethernet.c
index bbf06a2c5..1681436e0 100644
--- a/cpu/6502/net/ethernet.c
+++ b/cpu/6502/net/ethernet.c
@@ -30,7 +30,7 @@
  *
  * Author: Oliver Schmidt <ol.sc@web.de>
  *
- * @(#)$Id: ethernet.c,v 1.6 2007/12/23 15:37:28 oliverschmidt Exp $
+ * @(#)$Id: ethernet.c,v 1.7 2010/09/28 23:02:16 oliverschmidt Exp $
  */
 
 #include <modload.h>
@@ -59,6 +59,9 @@ void CC_FASTCALL
 ethernet_init(struct ethernet_config *config)
 {
   static const char signature[4] = {0x65, 0x74, 0x68, 0x01};
+
+#ifndef ETHERNET
+
   struct mod_ctrl module_control = {cfs_read};
   u8_t byte;
 
@@ -85,6 +88,14 @@ ethernet_init(struct ethernet_config *config)
     }
   }
 
+#else /* !ETHERNET */
+
+  extern void ETHERNET;
+
+  module = &ETHERNET;
+
+#endif /* !ETHERNET */
+
   module->buffer = uip_buf;
   module->buffer_size = UIP_BUFSIZE;
   module->init(config->addr);
@@ -109,6 +120,8 @@ ethernet_exit(void)
 {
   module->exit();
 
+#ifndef ETHERNET
   mod_free(module);
+#endif /* !ETHERNET */
 }
 /*---------------------------------------------------------------------------*/