HI i have to make a project for my school. So i decided to do a black board cleaning mashine. For that i use a Infineon 80C535 microcontroler. I wanted to use 4 interrupts. Port 1^0 ; 1^4, 3^2; 3^3. The interrupt on the ports 3^2 and 3^3 work but not under the interrupt that is told in the users manual. The other interrupts dont work and after using them the programm crashs. I dont know what i did wrong. But im not very experienced with such programms. I dont know what i should do now and we ve got holidays now so i cant ask my teacher. Plz help me. I dont know wich informations u need to help. But plz help me!