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Arithmetic and Logic Unit (ALU)

The ALU is designed so it can be enhanced with reasonable easy. The initial ALU must provide the following operations:

Note: All these operations apply to 16 bits signed (two's complement) integers.

ADD      Add
DEC      Decrement
CMP      Logical NOT (complement)
AND      Logical AND
OR       Logical OR
XOR      Logical XOR
SHIFT    Both Left and Right with and without Carry

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