> This is an IR link @ 2400 bps; will try the magic bytes if I need to
"drop"
> more than 16 bytes or so with the frame error sync.

The most magic of all magic bytes is no byte at all. If you have the ability
to insert such bytes into the data stream then you presumably also have the
ability to pause transmission occasionally. If you pause for 1 word time (10
bits) (so that the circuit is at logical 1 / mark) then any properly behaved
UART that is monitoring the line will automatically drop into sync when the
character stream is restarted. This is the whole point of async
communications. (Having a longer stop "bit" will also increase
synchronisation capability, but not as well as just stopping sending
occasionally).




        Russell McMahon
.

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