aimd@castle.ed.ac.uk (M Davidson) (04/14/90)
Hi, before my HD trashed I had written a program to re-vector the Timer B interrupt using XBTIMER. It worked OK but at the end of the interrupt routine I had to clear the service bit by simply clearing the correct bit in the MFP register. Is that how it's meant to be done? I'm just looking for a cleaner way of doing it - isn't it possible that the address of the MFP chip may change at some time in the future. Is there a way of finding out these addresses without taking them out of a book? Or are all the IO registers high in memory guaranteed never to change? Thanx again, Mark.