I developed a program using V6.1 on MC9RS08KA1. The program sent RS232 data out from an output port at 2400baud. All works fine. However, when I complied the same program using V6.2 and downloaded to the same MC9RS08KA1 (all software, hardware, everything were the same except CodeWarrior version). I found that the RS232 signal generated had the frequency changed, the period for each pulse was shorter. Since the signal is generated purely by using instruction delays in the program, I suspect there is something wrong with the internal clock frequency. Could V6.2 affects the trim value in the register or did something that increased the clock rate?