diff --git a/femto b/femto
index 6e4b9cc..d267560 100755
--- a/femto
+++ b/femto
@@ -5,11 +5,15 @@
 # see femto.txt for documentation
 
 TTY=`stty -g`
+BASE="$HOME/w/nxu"
 
-uxnasm femto.tal femto.rom
+if [ $1 = "-r" ]; then
+    shift
+    uxnasm "$BASE/femto.tal" "$BASE/femto.rom"
+fi
 
 if [ $? -eq 0 ]; then
     stty raw -echo
-    uxncli femto.rom "$@"
+    uxncli "$BASE/femto.rom" "$@"
     stty "$TTY"
 fi