-int io = AWE_DEFAULT_BASE_ADDR; /* Emu8000 base address */
-int memsize = AWE_DEFAULT_MEM_SIZE; /* memory size in Kbytes */
+static int io = AWE_DEFAULT_BASE_ADDR; /* Emu8000 base address */
+static int memsize = AWE_DEFAULT_MEM_SIZE; /* memory size in Kbytes */