working on debug menu

include/debug.h

@@ -0,0 +1,19 @@
+#pragma once
+
+#include <common.h>
+
+typedef enum {
+    DS_MAIN,
+    DS_DISASSEMBLE
+} debug_state;
+
+typedef struct {
+    debug_state state;
+    u16 dissasembly_scroll;
+    u16 dissasembly_target; 
+    u16 dissasembly_pc;
+} debug_context;
+
+void debug_update();
+debug_context *debug_get_context();
+void debug_init();