when the interrupt(IRQ) occurs processor must switch to IRQ mode,then it should go to the IRQ handler routine.
here application developer part is to tell the IRQ handler address only.so who taking the responsibility to change from User mode to IRQ mode.
whether the core itself switched into IRQ mode using hardware setup or some low level routines(program) avail.i struck in this point , i cant
proceed further on this study of ARM7TDMI processor.
please tell me your thoughts regarding this query.
This post has been edited by shan s: 26 November 2012 - 06:19 AM