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Question on 68000 microprocessor assembly programming! Assume the 68000 stack and register values shown in Figure P7.13 before the occurrence of an interrupt. If an
Question on 68000 microprocessor assembly programming!
Assume the 68000 stack and register values shown in Figure P7.13 before the occurrence of an interrupt. If an external device requests interrupt by asserting the bar IPL2, bar 1PL1, and bar IPL0 pins with the value 000_2, determine the contents of A7' and SR during interrupt and after execution of RTE at the end of the service routine of the interrupt. Draw the memory layouts and show where A7' points to and the stack contents during and after interrupt. Assume that the stack is not used by the service routine. Assume the 68000 stack and register values shown in Figure P7.13 before the occurrence of an interrupt. If an external device requests interrupt by asserting the bar IPL2, bar 1PL1, and bar IPL0 pins with the value 000_2, determine the contents of A7' and SR during interrupt and after execution of RTE at the end of the service routine of the interrupt. Draw the memory layouts and show where A7' points to and the stack contents during and after interrupt. Assume that the stack is not used by the service routineStep by Step Solution
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