I am seeing a weird effect on the MPLAB simulator.

I have the code fragment
    movlw  D'5'
    movwf  Spot1

where Spot1 is at 30.

Assemble the code, single step through, first instruction changes W to 5,
second instruction changes location 30 to a 5.  No big surprise.

Now, select Debugger->Clear Memory->All memory

Click reset, single step again
First instruction changes W to ff (!), second instruction appears to do
nothing.

Hit reset again and step, now W is decremented (by the movlw D'5'
instruction!) to fe.  Each repeat decrements W.

What is up with this?

--McD


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