library std;
library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_arith.all;
use ieee.std_logic_unsigned.all;
use ieee.std_logic_textio.all;
use ieee.numeric_std.all;
use std.textio.all;
entity mux is
port (
mux_sel : in std_logic_vector(1 downto 0);
a,b,c,d : in std_logic_vector(7 downto 0);
mux_out : out std_logic_vector(7 downto 0)
);
end entity;
architecture struct of mux is
begin
process( mux_sel,a,b,c,d )
begin
case mux_sel is
when "00" => mux_out <= a;
when "01" => mux_out <= b;
when "10" => mux_out <= c;
when others => mux_out <= d;
end case;
end process;
end architecture;
Reading design: mux.prj
=========================================================================
* HDL Compilation *
=========================================================================
Compiling vhdl file "/home/peterzal/junk/wp_mux.vhdl" in Library work.
Entity <mux> compiled.
Entity <mux> (Architecture <struct>) compiled.
=========================================================================
* Design Hierarchy Analysis *
=========================================================================
Analyzing hierarchy for entity <mux> in library <work> (architecture <struct>).
=========================================================================
* HDL Analysis *
=========================================================================
Analyzing Entity <mux> in library <work> (Architecture <struct>).
Entity <mux> analyzed. Unit <mux> generated.
=========================================================================
* HDL Synthesis *
=========================================================================
Performing bidirectional port resolution...
Synthesizing Unit <mux>.
Related source file is "/home/peterzal/junk/wp_mux.vhdl".
Found 8-bit 4-to-1 multiplexer for signal <mux_out>.
Summary:
inferred 8 Multiplexer(s).
Unit <mux> synthesized.
=========================================================================
HDL Synthesis Report
Macro Statistics
# Multiplexers : 1
8-bit 4-to-1 multiplexer : 1
=========================================================================
=========================================================================
* Advanced HDL Synthesis *
=========================================================================
Loading device for application Rf_Device from file '4vfx60.nph' in environment /home/peterzal/Xilinx91i.
=========================================================================
Advanced HDL Synthesis Report
Macro Statistics
# Multiplexers : 1
8-bit 4-to-1 multiplexer : 1
=========================================================================
=========================================================================
* Low Level Synthesis *
=========================================================================
Optimizing unit <mux> ...
Mapping all equations...
Building and optimizing final netlist ...
Found area constraint ratio of 100 (+ 5) on block mux, actual ratio is 0.
Final Macro Processing ...
=========================================================================
Final Register Report
Found no macro
=========================================================================
=========================================================================
* Partition Report *
=========================================================================
Partition Implementation Status
-------------------------------
No Partitions were found in this design.
-------------------------------
=========================================================================
* Final Report *
=========================================================================
Clock Information:
------------------
No clock signals found in this design
Asynchronous Control Signals Information:
----------------------------------------
No asynchronous control signals found in this design
Timing Summary:
---------------
Speed Grade: -11
Minimum period: No path found
Minimum input arrival time before clock: No path found
Maximum output required time after clock: No path found
Maximum combinational path delay: 6.113ns
=========================================================================
WARNING:ProjectMgmt - "/home/peterzal/windoze/doot/parts/mux.ngc" line 0 duplicate design unit: 'Module|mux'
Process "Synthesize" completed successfully