diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..bdc17ef
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+*~
+*.bin
+*.lst
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..de173f2
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,13 @@
+all: apple35cont.bin apple35cont.lst check
+
+%.p %.lst: %.asm
+	asl -L $<
+
+%.bin: %.p
+	p2bin -r '$$-$$' $<
+
+check: apple35cont.bin
+	echo '084587835c1d2c92f5708a9745fdd43ba32136fcdb861a12ee7d690de22dc172 apple35cont.bin' | sha256sum -c -
+
+clean:
+	rm -f apple35cont.bin apple35cont.lst