I'm having problems getting my interrupt service routines to work properly. I use the good old Borland TC and follow the examples when setting up my ISR and when saving old vectors and plugging new ones. But still, it doesn't matter how I excite the IRQ-channels, I never manage to enter the ISR. I use IRQ11 on an embedded 386-system. Can you give mee a hint about what could be the problem, I've run out of ideas.