Thanks Andy and everyone else who's replied.

So much for the death of the 8031 as someone posted recently.

Will make a pleasant change to use ones already learnt programming skills to look at the internals of such a common household device.Admittedly without much hope of making improvements but may provide a source of 'oh thats a novell way of doing that' type scenarios.

Anyway thanks again and apologies for the delay in getting back to you all.

Jeremy