Consider a hypothetical microprocessor generating a 16-bit address (for example, assume that the program counter and the
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a. What is the maximum memory address space that the processor can access directly if it is connected to a “16-bit memory”?
b. What is the maximum memory address space that the processor can access directly if it is connected to an “8-bit memory”?
c. What architectural features will allow this microprocessor to access a separate “I/O space”?
d. If an input and an output instruction can specify an 8-bit I/O port number, how many 8-bit I/O ports can the microprocessor support? How many 16-bit I/O ports? Explain.
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Computer organization and architecture designing for performance
ISBN: 978-0136073734
8th edition
Authors: william stallings
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