Question: When executing the instruction BX LR a) How does the processor know whether it is exiting a standard subroutine or an interrupt service b) c)

When executing the instruction "BX LR" a) How does the processor

When executing the instruction "BX LR" a) How does the processor know whether it is exiting a standard subroutine or an interrupt service b) c) routine? What operations are performed when exiting a standard subroutine? What operations are performed when exiting an interrupt service routine? When executing the instruction "BX LR" a) How does the processor know whether it is exiting a standard subroutine or an interrupt service b) c) routine? What operations are performed when exiting a standard subroutine? What operations are performed when exiting an interrupt service routine

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