--- Makefile.in.orig	2015-01-25 00:59:52.000000000 +0900
+++ Makefile.in	2015-01-26 21:02:06.000000000 +0900
@@ -2000,8 +2000,8 @@
 
 .a65.bin:
 	o65file=`echo $@ | sed 's/bin/o65/'`;\
-	xa -R -G $< -o $$o65file &&\
-	od -v -An -w8 -tx1 $$o65file | sed -re 's/[[:alnum:]]+/0x&,/g' > $@ &&\
+	xa65 -R -G $< -o $$o65file &&\
+	od -v -An -tx1 $$o65file | sed -re 's/[[:alnum:]]+/0x&,/g' | rs 0 8 > $@ &&\
 	${RM} $$o65file
 
 # Tell versions [3.59,3.63) of GNU make to not export all variables.