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Comments on HW 7: A 4 (2)
“The 68HC12 is in an interrupt service subroutine that interrupted the main program. What was the value in the Y register at the time of the ISR?”
Answer: $A2DB and $7276, respectively.
Comment: To answer this question, we refer to Figure 6.11 “Interrupt stacking order” on p. 221 of the textbook.