David VanHorn wrote:
>>> My second timer is causing an interrupt every ~4us,
>>
>> That's a problem.  Even at 20MHz, that's only 20 instructions.
>
> Which pics run at 1 MIPS/MHz?

None.  The maximum oscillator frequency of the OP's PIC is 20MHz.  That
means 5MHz instruction rate, or 5 instructions per microsecond, or 20
instructions in the specified 4uS timer period.


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