>> That's an unusual cluster of errors. >> EITHER the two middle bits are inverted OR they stay high when >> preceded by more than one "1". >> The latter seems more likely. > ... except that with a UART, the data is generally transmitted LSB-first. Yes - and with any standard async serial coms that you want received correctly at the other end. Preceded is of course in time and not in calligraphy :-).. I got it 95% right and then fell at the last fence. I correctly noted this > Note that characters are sent LSbit 1st and even advised correctly here > so a look at any AC behaviour, > as above, needs to account for right to left reading. > Look for a series of bits or even an adjacent bit to influence one or > more to the ... And then. Aaaaagh !!! :-) > ... LEFT of it. to the RIGHT !!!! of course (as printed) Given the correct prior advice it appears that summat gang aglae between brain and fingers :-). Russell --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .