// get the IRQ for an absolute IO address
// this allows any code to hook an IRQ in any io address, for example
// tracing changes of values into a register
-// Note that the values do not "magicaly" change, they change only
+// Note that the values do not "magically" change, they change only
// when the AVR code attempt to read and write at that address
//
// the "index" is a bit number, or ALL bits if index == 8