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System Design Assignment 5 Solution

Design of an 8-bit ALU with specifications given separately.

Test cases for logical operations

1 pair of operands with X not equal to Y, for NOP 1 pair of operands with X equal to Y, for NOP

1 pair of operands for each logical operation (AND, OR, XOR)



Test cases for arithmetic operations:

1 pair of operands that does not result in an overflow for each of the following arithmetic operations:
Unsigned addition

Unsigned subtraction with X > Y Signed addition

Signed subtraction

Unsigned multiplication Signed multiplication



1 pair of operands that results in an overflow for each of the following arithmetic operations:

Unsigned addition Signed addition

Signed subtraction

Unsigned multiplication Signed multiplication

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