LE> particularly impressive. Actually there was an interesting
 LE> discussion here (or zone3_tech?) about the fact that RS232
 LE> is NRZ, so therefore doesn't have a "baud rate" per se
 LE> possibly.

RS232 is Non Return to Zero?  I don't believe so.  As far as I know, it's
straight 0 (start bit), data bits as they come, then 1 (stop bit), per
byte.

NRZ (or NRZI) is usually used on self-clocking data streams, is it not? 
RS232 as we use it is referenced to fixed (local) Rx/Tx clocks, clocked at
mid-bit.

Ian

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