I am having problems using timer3 in simulation debugging of Cygnal C8051F040. I set the timer initial value and enable it's interrupt and set it on (TR3=1) but when I open the Timer 3 perphrial window all values are zero and the timer mode is disabled. Strangely enough - viewing the timer values through the watch window give the correct values and the timer value even increments. The problem is that the debugger does not jump to the interrupt function when timer 3 overflows - the overflowvalue switches on (TF3=1) but no jump occurs. Does anybody know the causes of the problem? I am using MicroVision2 V2.32 and Simulation DLL S8051.DLL V2.34