diff --git a/cpu/cc2430/segment.rules b/cpu/cc2430/segment.rules
new file mode 100644
index 000000000..f91005099
--- /dev/null
+++ b/cpu/cc2430/segment.rules
@@ -0,0 +1,23 @@
+# segment.rules file assigns source code modules to specific banks
+# segment.rules is constructed from any segment.rules found in the search path
+# the search path is defined in Makefile.cc2430
+# segment.rules get processed by a perl snippet listed in the Makefile.cc2430
+# the processed output is put into the obj_* directory
+# comments starting with "#" are supported
+# perl regular expression matching can be used on the file name specification
+# 
+# general rules -- 
+#  some code must be placed in all banks (or SDCC/aslink will complain at link time)
+#  code called from function pointers must be in HOME/CSEG/BANK0
+#  interrupt code must also be in HOME/CSEG/BANK0
+#  code not marked with __banked can only be called from code in the same bank  
+#
+HOME intr.c  # All interrupt code must live in HOME/BANK0
+HOME uart.c
+BANK3 uart_init.c
+BANK2 dma.c
+CSEG cc2430/dev/bus.c
+CSEG autostart.c
+BANK2 cc2430/dev/cc2430_rf.c
+BANK1 cc2430/
+BANK1 .
diff --git a/cpu/cc2430/segment.rules.pl b/cpu/cc2430/segment.rules.pl
new file mode 100644
index 000000000..213dd8fa2
--- /dev/null
+++ b/cpu/cc2430/segment.rules.pl
@@ -0,0 +1,11 @@
+  $match_me = pop @ARGV; 
+  #print "searching for $match_me\n";
+  while (<>) {
+    s/#.*$//; # filter out comments
+    s/^\s*//; # filter out leading white space
+    @F=split /\s+/; # split on white space
+    if (($_ =~ m/\S\s+\S/) && ($match_me =~ m/$F[1]/)) { 
+	print $F[0]."\n"; 
+	exit; #return only first match
+    }
+  }