+extern uint8 dreads[4];
+extern uint32 dwrites_c[2];
+extern int dread_count_c, dwrite_count_c;
+extern int mapirq_cyc_c;
+extern void (*MapIRQHook)(int a);
+#define DummyRdMem(...)
+#else
+#define DummyRdMem RdMem
+void FP_FASTAPASS(1) (*MapIRQHook)(int a);