diff --git a/examples/MONITOR.ASM b/examples/MONITOR.ASM
index bf02c56..6e9b48c 100644
--- a/examples/MONITOR.ASM
+++ b/examples/MONITOR.ASM
@@ -659,6 +659,7 @@ PROCESSSECTORS
 ; 0 = SIO A, 1 = SIO B
 
                 LD    A, (PRIMARYIO)
+                PUSH  AF
                 LD    HL, (0FFFEH)
                 JP    (HL)
 
diff --git a/src/com/maccasoft/tools/Emulator.java b/src/com/maccasoft/tools/Emulator.java
index b802dd8..26f2fcc 100644
--- a/src/com/maccasoft/tools/Emulator.java
+++ b/src/com/maccasoft/tools/Emulator.java
@@ -87,7 +87,7 @@ public class Emulator {
                     String s2 = preferences.getRomImage2();
 
                     if ((s1 == null || "".equals(s1)) && (s2 == null || "".equals(s2))) {
-                        InputStream is = Emulator.class.getResourceAsStream("rom.bin");
+                        InputStream is = Emulator.class.getResourceAsStream("ROM.BIN");
                         byte[] rom = new byte[is.available()];
                         is.read(rom);
                         is.close();
diff --git a/src/com/maccasoft/tools/ROM.BIN b/src/com/maccasoft/tools/ROM.BIN
new file mode 100644
index 0000000..ea9a759
Binary files /dev/null and b/src/com/maccasoft/tools/ROM.BIN differ
diff --git a/src/com/maccasoft/tools/rom.bin b/src/com/maccasoft/tools/rom.bin
deleted file mode 100644
index a1a3141..0000000
Binary files a/src/com/maccasoft/tools/rom.bin and /dev/null differ