Carl Denk skrev:
> I have an 18F1320 @ 8mhz. with RS-285 as slave on the USART, and 3 
> active ADC channels. The USART receive is a high priority interrupt,

Are *all* interrupts (used) high prio ?

> I haven't been doing any special save at the interrupts.

Not even what's specified in the datasheet ?

> 
> What would be the appropriate way to handle interrupts and polling.
> :)

First, to follow the datasheet...

Then, to *not* use high/low interrupt prio's if not
absolutely needed. Running with one level is much easier.

Jan-Erik.

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