Issue with Array causing PauseUS to have 16uS overhead

[bcd]

The PIC is running at 20MHz. I have Define OSC 20 at the top of the code.
I am not using Interrupts. Its a simple State Machine loop that runs correctly without the For-Next loop that clears the array.

Without the For-Next loop the PauseUS has the correct time, but with it the PauseUS time is way off.

I tried using NOPs, but was still getting a long delay. I think it must an interaction between the for-next loop that clears the array and the HSEROUT.

I borrowed a DSO from work so I can do a bit of in depth investigation into what is happening and why.

I will post the code later when I have it to hand.

bill.

[BrianT]

I think CLEAR will zero all your variables without you needing the For..Next lines you now have.

HTH
Brian

[Acetronics2]

Hi, Bill

1) why not try to place your delay comp. just BEFORE the loop ??? ( could help for debugging too ... )

2) you can assign your variables banking ... see $ 7.3



Now, 16µS @ 20 MHz is ~ 60-80 assembler lines ... that make a lot of bank switchings ... if it is bank switching.

What's your processor ???

Alain