diff --git a/ins.def b/ins.def
new file mode 100644
index 0000000..5c85961
--- /dev/null
+++ b/ins.def
@@ -0,0 +1,14 @@
+4095 ppc
+4094 swp
+4093 read
+4092 write
+4091 add
+4090 sub
+4089 jmp
+4088 sez
+4087 jez
+4086 jsr
+4085 ret
+4084 dup
+4083 drop
+4082 hlt