diff --git a/Source/HBIOS/Makefile b/Source/HBIOS/Makefile
index 361481c6..35cbc56a 100644
--- a/Source/HBIOS/Makefile
+++ b/Source/HBIOS/Makefile
@@ -1,23 +1,23 @@
 OBJECTS =
 
-ifeq (1,0)
+ifeq (1,1)
 OBJECTS += DYNO_std.rom
 OBJECTS += EZZ80_std.rom
 OBJECTS += MK4_std.rom
-OBJECTS += N8_std.rom
-OBJECTS += RCZ180_ext.rom
-OBJECTS += RCZ180_nat.rom
-OBJECTS += RCZ80_kio.rom
-OBJECTS += RCZ80_mt.rom
-OBJECTS += RCZ80_std.rom
-OBJECTS += RCZ80_wiz.rom
-OBJECTS += SBC_simh.rom
-OBJECTS += SBC_std.rom 
-OBJECTS += SCZ180_126.rom
-OBJECTS += SCZ180_130.rom
-OBJECTS += UNA_std.rom
-OBJECTS += ZETA_std.rom
-OBJECTS += ZETA2_std.rom
+#OBJECTS += N8_std.rom
+#OBJECTS += RCZ180_ext.rom
+#OBJECTS += RCZ180_nat.rom
+#OBJECTS += RCZ80_kio.rom
+#OBJECTS += RCZ80_mt.rom
+#OBJECTS += RCZ80_std.rom
+#OBJECTS += RCZ80_wiz.rom
+#OBJECTS += SBC_simh.rom
+#OBJECTS += SBC_std.rom 
+#OBJECTS += SCZ180_126.rom
+#OBJECTS += SCZ180_130.rom
+#OBJECTS += UNA_std.rom
+#OBJECTS += ZETA_std.rom
+#OBJECTS += ZETA2_std.rom
 else
 OBJECTS += ZETA_std.rom
 OBJECTS += ZETA2_std.rom