I'm working on a MCF51AC256.
I've just experience with HCS08 (DZ60). I have made a very small RT system on I.
On HSC08, If you put "asm CLI" in the ISR, you can "preempt" it (the isr can be interrupted).
On a Coldfire, the Exception processing is more complex and i have some difficulty to do what i want...
In my application:
- i only run as supervisor
- I just use module ISR (FTM, SCI...)
What must i do to be sure that one ISR, for exemple TMP3_OVF , can be interrupted by others ?
Thank's in advance for your reply.