(a) Suppose that a processor executes instructions each of which is 16-bits long. How many different instruc- tions can the instruction repertoire of this processor include if you assume that each instruction must be identified by a 4-bit opcode? (b) Suppose that only 7 instructions in the instruction repertoire of this processor require a 12-bit address, and all of its other instructions will execute operations on operands stored in a pair of registers (A and B) as in the VESP processor. Describe an instruction format that allows this processor to have 16 such instructions in addition to the 7 instructions that require a 12-bit address.

(a) Suppose that a processor executes instructions each of which is 16-bits long. How many different instruc- tions can the instruction repertoire of this processor include if you assume that each instruction must be identified by a 4-bit opcode? (b) Suppose that only 7 instructions in the instruction repertoire of this processor require a 12-bit address, and all of its other instructions will execute operations on operands stored in a pair of registers (A and B) as in the VESP processor. Describe an instruction format that allows this processor to have 16 such instructions in addition to the 7 instructions that require a 12-bit address.

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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Question

1. (a) Suppose that a processor executes instructions each of which is 16-bits long. How many different instruc-
tions can the instruction repertoire of this processor include if you assume that each instruction must be
identified by a 4-bit opcode?
(b) Suppose that only 7 instructions in the instruction repertoire of this processor require a 12-bit address,
and all of its other instructions will execute operations on operands stored in a pair of registers (A and
B) as in the VESP processor. Describe an instruction format that allows this processor to have 16 such
instructions in addition to the 7 instructions that require a 12-bit address.

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