> http://technology.niagarac.on.ca/students/a/bamyote/
> 
> A bit of googling found this, which uses a start bit, then 
> the same sequence.
> I don't remember having a start bit though.

My first thought is that it could be done much more efficiently with a
_stop_ bit instead of a start bit. All that means is that you check for
byte==0 _before_ transmitting a (unwanted) trailing dash.

A 0110 0000
B 1000 1000

O 1111 0000

S 0001 0000

5 0000 0100

$ 0001 0011

Seems to work ok...

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