Hi everyone,

I am converting some 17C756A code to run on a 18F6620 but I'm a little
confused by the context saving during interrupts. In the data book it says:

During an interrupt, the return PC value is saved on the
stack. Additionally, the WREG, STATUS and BSR registers
are saved on the fast return stack. If a fast return
from interrupt is not used (See Section 4.3), the user
may need to save the WREG, STATUS and BSR registers
in software. Depending on the user s application,
other registers may also need to be saved. Example 6-1
saves and restores the WREG, STATUS and BSR registers
during an Interrupt Service Routine.

Is it a good idea to use the fast register stack? Or should I just do it the
old fashioned way?

Thanks

Graham North

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