Hello guys. hope you all are okay. Today I discovered that the mid ranged PIC (not sure if further pics can) only can handle one interrupt at time, someone said that the 8051 can handle multiple interrupts, not sure if true or what, but my question is .. Since I will have to work with only one interrupt and I have it already busy, from the moment i declare my registries like Global interrupt, External Interrupt, and so on ; enabled, If in some function I declare them momentary disabled (GIE=0 . PEIE=0 . ETC) Will be the ISR disabled until I re enable the registries again ? or from the moment i declared enabled they will work forever until I restart the device ? I ask because tomorrow I ll be off for some days and this could take me some hours to debugg and find out so I would like to know so my mind can working when im not here haha . I hope i could be clear .. have a nice night .