Hi All On test board:Leds(2 nos) --> P1.1,P1.2 Buzzer --> P1.3 In Task0:Task1 and Task2 are created. In Task1: led1 = On,led2 = off --> delay() --> led1 = Off,led2=On. In Task2: buzzer = On --> delay() --> buzzer = off. Serial port,Timers,Interrupts not initialised. No external RAM connected(only one int var used in code). After running this program on 89C51RD2 nothing was working. what might be the problem ? Do i have to initialise Timer,interrupts ? is this problem related to delay routines ? can any body suggest how can i check flow of RTOS program execution by using above on board resources ? Thanks regards Naresh
Ok Naresh, if any questions about my code, please wrote it to my e-mail. So we can discuss some other possibilities too and/or simulator/debugger purposes. Stefan (sorry for delayed answer)