> > Did you check the 12rf chips?
> 
> No, but do they even have IDs in the first place?  That's 
> another case of the same die too. 

Same die, but still a different print on the outside.

IIRC the older 12C RF chips had no ID (like most 12-bits), but these
12F's (some 12F's are 14-bits) do.

Wouter van Ooijen

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