After execution of a subroutine, _______ the start address of the subroutine is

Question

After execution of a subroutine, _______

the start address of the subroutine is pushed onto the stack `the end address of the subroutine is pushed onto the stack

When a WAI instruction is executed, the processor ______

A stack overflow ______

When a subroutine is called ______

The following are points concerning stack are that ______

An interrupt is a _______

The stack is ______

The 68HC11 has resets for external RESET pin, power-on reset and _______

A vector is _______

A subroutine is _______

Explanation / Answer

After execution of a subroutine,

- execution resumes at the instruction that follows the one that called the subroutine

When a WAI instruction is executed, the processor

- stacks the registers, prefetches a vector, and waits for the unmasked interrupt

A stack overflow

- is the situation when the stack pointer continues decrementing so that it is pointing to areas of memory required for other uses

When a subroutine is called

- All of the above

The following are points concerning stack are that

- in a push operation, the stack pointer is decremented, and data stored in memory at the address specified by the stack pointer

An interrupt is a

- signal that causes the CPU to finish executing the current instruction and then it immediately begins execution of another routine known as an interrupt service routine

The stack is

- All of the above

The 68HC11 has resets for external RESET pin, power-on reset and

- computer operating properly, clock monitor reset

A vector is

a- ll of the above

A subroutine is

- A sequence of execution after operation

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