diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e3d7e9b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,13 @@
+# Ignore assembly listings
+*.lst
+
+# Ignore object files
+*.o
+
+# Ignore assembled code
+*.bin
+
+# Ignore output disk images except for the template:
+*.po
+!template.po
+
diff --git a/go b/go
index 361b5f3..a39d7c2 100755
--- a/go
+++ b/go
@@ -1,4 +1,4 @@
 ca65 main.asm -t none -l $*
-cl65 main.asm -t none --start-addr 0x2000 --listing 
+cl65 main.asm -o main.bin -t none --start-addr 0x2000 --listing 
 cp template.po mydisk.po
-java -jar /Applications/AppleCommander.app/Contents/Resources/Java/AppleCommander.jar -p mydisk.po cd.online BIN 0x2000 < main
+java -jar /Applications/AppleCommander.app/Contents/Resources/Java/AppleCommander.jar -p mydisk.po cd.online BIN 0x2000 < main.bin
diff --git a/template.po b/template.po
new file mode 100644
index 0000000..a8d33a3
Binary files /dev/null and b/template.po differ