Hi, I'm having some difficulties in determining when and how (external) interrupts remain pending. In the users manual for the XC167ci it states that hardware arbitration leaves interrupts pending if they cannot be handled at that moment (i.e. the ILVL of the PSW is too high). I use a few macros to raise or lower the ILVL temporarily. This works great, I never miss interrupts. I figure that if an interrupt occurs when the ILVL is too high, the interrupt is buffered (pending) and it is handled the moment I lower the ILVL again. But I now would like to turn of ONE specific interrupt. I do that by clearing and setting of the CC10IE bit. It seems that interrupts that occur during the time that the CC10IE bit is of are completely gone. I.e. they do not stay 'pending', they are not buffered and handled whenever I enable the CC10IE bit again. Can anyone tell me how and when the XC167 keeps interrupts pending? Did anyone else run into this same problem? Should I enable/disable one specific interrupt in another way? Thanks for your help