On Mon, 2007-02-26 at 18:08 +0530, Anand Gadiyar wrote:
> Hi all,
> 
>    I've been playing around with a PIC 16F877A now. I'm a newbie. I
> seem to have found strange behavior while using the SWAPF instruction.
> 
> Here's the code I tried in MPLAB SIM.
> 
> MOVLW 0x4F
> SWAPF W,0

W isn't an SFR, so you can't use SWAPF this way.

You'll have to use an SFR. TTYL

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