circuit should conditionally zero and negate the 16-bit input). This logic can be used to manipulate the x and y inputs, as well as the out output. By this point in the unit, you would have already built the chips for bitwise And-ing and addition. Thus, what remains is to build logic that chooses between them according to the f control bit. Finally, you will need to build logic that integrates all the other chips into the overall ALU.
circuit should conditionally zero and negate the 16-bit input). This logic can be used to manipulate the x and y inputs, as well as the out output. By this point in the unit, you would have already built the chips for bitwise And-ing and addition. Thus, what remains is to build logic that chooses between them according to the f control bit. Finally, you will need to build logic that integrates all the other chips into the overall ALU.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question
Your task is to implement the ALU using Hardware Description Language (HDL).
Your first step will likely be to create a logic
circuit that manipulates a 16-bit input according
to the nx and zx control bits (i.e., the circuit
should conditionally zero and negate the 16-bit
input). This logic can be used to manipulate the
x and y inputs, as well as the out output. By this
point in the unit, you would have already built
the chips for bitwise And-ing and addition. Thus,
what remains is to build logic that chooses
between them according to the f control bit.
Finally, you will need to build logic that
integrates all the other chips into the overall
ALU.
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