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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 16-bit data bus. 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.

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 16-bit data bus. 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.

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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9. 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 16-bit data bus. 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.
Transcribed Image Text:9. 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 16-bit data bus. 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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