Question: Consider a hypothetical microprocessor generating a 16-bit address (for example, assume that the program counter and the address registers are 16 bits wide) and having
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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In cases a and b the microprocessor will be able to access 2 16 64K bytes the o... View full answer
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