> At the moment I am initiating a conversion by hitting a button on the PC
> and then looking at the result. The problem only occurs when I set the
> A2D to use its internal Vref. If I set it to use an external Vref and
> supply 5V and Gnd to the respective pins, I get the correct result.
>

I could be totally missing the point here, but looking at the data sheet
I think the internal reference in only 3v ?  So inputs greater than this
give f.s.d. (0x3f) I think.

(Flame suit on)  ;-)

Peter



> R
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