diff --git a/lang/bytecode.c b/lang/bytecode.c
new file mode 100644
index 0000000..3af1285
--- /dev/null
+++ b/lang/bytecode.c
@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) 2023 John Watts and the LuminaSensum contributors
+
+#include "bytecode.h"
+#include "error.h"
+#include "number.h"
+
+enum opcodes {
+	OP_RET = 0x00,
+	OP_NUM = 0x01,
+};
+
+// clang-format off
+static const unsigned char bytecode[] = {
+	OP_NUM, 0xd2, 0x04, 0x00, 0x00,
+	OP_RET
+};
+// clang-format on
+
+void bytecode_run(struct object **stack) {
+	abort_if(!stack, "bytecode_run has no stack");
+	const unsigned char *pos_code = &bytecode[0];
+	struct object **pos_stack = stack;
+	unsigned char op = OP_RET;
+	while ((op = *pos_code++) != OP_RET) {
+		switch (op) {
+		case OP_NUM: {
+			int num = 0;
+			num |= *pos_code++ << 0;
+			num |= *pos_code++ << 8;
+			num |= *pos_code++ << 16;
+			num |= *pos_code++ << 24;
+			*pos_stack++ = number_create(num);
+			break;
+		}
+		}
+	}
+}
diff --git a/lang/bytecode.h b/lang/bytecode.h
new file mode 100644
index 0000000..d39bdae
--- /dev/null
+++ b/lang/bytecode.h
@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) 2023 John Watts and the LuminaSensum contributors
+
+#ifndef BYTECODE_H
+#define BYTECODE_H
+
+#include "object.h"
+
+// Runs bytecode on a stack
+void bytecode_run(struct object **stack);
+
+#endif
diff --git a/lang/func.c b/lang/func.c
index d2d6250..5d41a56 100644
--- a/lang/func.c
+++ b/lang/func.c
@@ -1,8 +1,8 @@
 // SPDX-License-Identifier: MIT
 // Copyright (c) 2023 John Watts and the LuminaSensum contributors
 
+#include "bytecode.h"
 #include "error.h"
-#include "number.h"
 #include "object.h"
 #include <stdlib.h>
 
@@ -30,7 +30,7 @@
 static void func_call(struct object *obj, int arg_count, struct object **args) {
 	abort_if(arg_count != 0, "func_add called with more than 0 arguments");
 	abort_if(obj->class_data != &func_class, "func_call obj is not a func");
-	args[0] = number_create(1234);
+	bytecode_run(args);
 }
 
 static struct object_call calls[] = {