Thanks for that, just been trying a few things out in the simulator,
and basically came to that conclusion.

I better get busy re-writing some of this code!

Ed

On 25 Mar 2004, at 18:50, piclist@XARGS.COM wrote:

> On Thu, 25 Mar 2004, Edward Cooper wrote:
>
>> Now I'm not entirely clear if another interrupt can occur while one is
>> in process?  I'm thinking it can't because it would just mess up the
>> PUSH and POP process, or would it!?
>
> Normally, global interrupts are disabled in your ISR, so if an
> interrupt event occurs, it will not cause the ISR to be re-entered.
> Interrupt flags will continue to be set for events that occur while
> you're in the interrupt.
>
>> Basically the TMR0 process is very short, I just need it to occur
>> while
>> the processor is still dealing with the serial receive.
>>
>> I think I should really look into handling this serial receive outside
>> of the interrupt?
>
> That's probably the best approach.  Or if you're using a PIC18, you
> could make your TMR0 interrupt high priority, which would allow it to
> preempt your serial interrupt handler.
>
> --
> John W. Temples, III
>
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