"Timothy L. Nali" writes:
The most promising design I've seen so far (that I can actually do) is based on clocking a D flip-flop in the following way:
[Shifts the output of a clock that he hopes will be sloppy into a shift register]
If you want noise, your circuit needs a known noise source, with known good properties Your circuit has no known noise source, you are just hoping that there will be noise in it somewhere. Johnson noise is amplified thermal noise thus it is known to be good: Amplify johnson noise to signal levels, and then shift this random analog output into a long shift register. (You will need a long shift register to suppress metastable states.) You should set up your low frequency analog feedback to get near equality of ones and zeros, and you should have digital feedback (similar to a CRC generator) to get perfect equality of ones and zeros. --------------------------------------------------------------------- | We have the right to defend ourselves | http://www.jim.com/jamesd/ and our property, because of the kind | of animals that we are. True law | James A. Donald derives from this right, not from the | arbitrary power of the state. | jamesd@echeque.com