Schultz claims compiler error in his 0-13-753-815-4 re tl1, th1 for setting up baud rate. He gives example: tl1 = ~( 1000/ 256) = 0xfd ) where the value should be 0xfc. However, he is calculating the value incorrectly. He should be doing: tl1 = (~1000)/xx. In other words, take the 2's complement first, then mod 256 to get the lower value. In his example, 1000/256 is 3 and the two's complement is 0xdd. However, the latter method gives FC, the correct value. (By the way, his follow-up book repeats the same anomaly.)