Laboratory 2

Aim: To design, simulate (using XILINX) and implement a 4-function, 4-bit ALU, which processes two, 4-bit input operands X and Y. The functions of the ALU are described below.

Note: Cin denotes a carry input. The hardware should generate a Cout (carry out) signal.

Material needed: MSI chips 7483 and 74157 and SSI chips 7486, 7402 and 7408.

Prelab:

1. Draw a block diagram (in terms of functional blocks) of the ALU.

2. Describe your design approach.

3. Draw a neat logic diagram.

4. Draw a schematic diagram (in terms of chips) of your final hardware.

Demo: Build the ALU performing the above four functions and demonstrate its operations to the LAB instructor. Credit will be given for simple modular designs and flexibility of design for adding other functions.