1 files changed, 10 insertions, 0 deletions
diff --git a/instructions/decr.ts b/instructions/decr.ts
new file mode 100644
index 0000000..12e7fd9
--- /dev/null
+++ b/instructions/decr.ts
@@ -0,0 +1,10 @@
+import { PC } from "../pc.ts";
+
+export default {
+    function(this: PC, [reg1, reg2]: number[]) {
+        const r1 = this.lib.parseReg(reg1);
+        const r2 = this.lib.parseReg(reg2);
+        this.registers[r1] -= this.registers[r2]
+    },
+    args: 2
+}
\ No newline at end of file