CSCI 232 Lab 5

ALUs & Registers

Date Due: 29 February 2012

In this project you will experiment with performing arithmetic, logical, and shift operations using a register. You will be using the 4 of the 10 switches on the CADET to simulate one register’s output, another 4 to simulate a second register’s output, and the final two to control which operation you wish to perform on the two outputs. The result of the specified operation should be stored in a register you build with D flip flops. The output of these flip flops should be displayed on the LEDs. The operations to perform are:

Bit pattern of switches 9 and 10	Operation to perform
00	Add the two inputs
01	Subtract the two inputs (2’s complement)
10	Shift input 1 one bit to the right
11	Or the two inputs

Input 1

(4 switches)

You should first design your circuit using LogicWorks using a minimum number of gates. After showing me your circuit and getting it approved, you should wire your circuit on a CADET working in teams of two or less, and demonstrate your circuit to me.