Flip

The Flip Module in the 9-bit ALU: Simplifying Subtraction

A Clever Twist in Arithmetic

In the compact and efficient world of the 9-bit ALU, the flip_9bit module stands out for its simplicity and ingenuity. This module plays a pivotal role in subtraction operations by performing a nifty trick: flipping the sign bit of a 9-bit number.

The Role in Subtraction

The primary use of the flip_9bit module is to facilitate subtraction. In digital arithmetic, especially with signed numbers, subtraction can be elegantly transformed into an addition operation. How? By flipping the sign of one of the numbers and then simply adding them.