diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..6080671
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,19 @@
+# Compiled object files
+*.o
+
+# Archive/library files
+*.a
+
+# Symbol files
+*.sym
+
+# Executables
+plvm
+xplasm
+run6502
+
+# Build output directories
+src/rel/
+
+# macOS
+.DS_Store