The interrupt- driven I/O scheme overcomes the problems associated with polled I/O by communicating with the CPU through the address bus.
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Q38: Operands are always one- byte values.
Q39: Immediate addressing implicitly contains the operand address
Q40: One addressing mode that requires an additional
Q41: Two events than can cause the processor
Q42: Polled I/O operation is periodic, inefficient, and
Q44: The difference between exceptions and interrupts are
Q45: Special subroutine that contains instructions to process
Q46: Processors must automatically store the contents of
Q47: The addresses of the routines that handle
Q48: A bus master is any device in
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