ECEN 4243 ALU project
Spring 2004
Due Wednesday, 24 March 2004
ECEN 4243 Design Project Assignment1 the ALU
Create a 32 bit ALU with 4 select lines.
All busses are to be numbered with 0 as the least significant bit.
The input signals for the ALU are:
x and y are 32 bit busses.
Cin is a one bit carry in.
sel is a 4 bit function select bus.
The output signals are:
res is a 32 bit result bus
Cout is a one bit Carry out.
| sel | ALU function
(i.e. value on result bus) |
|---|
| 0000 | y |
| 0001 | not y |
| 0010 | 0 |
| 0011 | make 2's complement of y |
| 1000 | x xor y |
| 1010 | x and y |
| 1100 | x or y |
| 1011 | x and not y |
| 1101 | x or not y |
| 1110 | x plus y |
| 1111 | x minus y(2's complement Arithmetic) |
Note: all other select functions are reserved. There are no don't care
function select inputs. Fully decode each function select code into the appropriate
control signals.
The project is to be submitted to the automatic grader.
This is proj1 for the automatic grader.
There are a few specific details that must be
true of your uploaded files and the top module.
The top level module is alu32 and the
file containing the list of your module files is
alu32.ver.
The top level module must be defined with the
following terminals:
module alu32(x,y, Cin, sel, res, Cout);
input[31:0] x,y;
input[3:0] sel;
input Cin;
output[31:0] res;
output Cout;
When you upload the files there are two filenames to enter,
your local filename (which can be anything) and the upload
filename, which for the module files must end in .v and for
the list of files must be alu32.ver.
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acken@okstate.edu
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