Add arg_t, more robust address mode parsing
diff --git a/cpu.h b/cpu.h
index bbe6c60..20551ec 100644
--- a/cpu.h
+++ b/cpu.h
@@ -96,6 +96,11 @@
 	NOP,
 };
 
+enum // Fetch flags
+{
+	FETCH_NO_INDIRECTION = 1, // Do not follow indirection (used for disassembly)
+};
+
 // Emulator instance, create with new_cpu()
 typedef struct
 {