Subversion Repositories line_codes

Present in bench/vhdl are files showing simple usage examples of

the line codes examples. This files shows how to test them.

these running simulation examples requires ghdl and gtkwave for

viewing vcd files. If you're going to use another VHDL simulator,

this can be useful:

ghdl -a file.vhd

 means analyse:

 http://ghdl.free.fr/ghdl/Analysis-command.html

ghdl -e file

 mean elaborate:

 http://ghdl.free.fr/ghdl/Elaboration-command.html

ghdl -r file or ./file

 means run:

 http://ghdl.free.fr/ghdl/Run-command.html

cd bench/vhdl

1. Simulating the AMI decoder.

ghdl -a ../../rtl/vhdl/ami_dec.vhd

ghdl -a smlt_ami_dec.vhd

ghdl -e smlt_ami_dec

./smlt_ami_dec --vcd=ad.vcd

gtkwave ad.vcd

append the signals clk, e0, e1, s, clrb

clk  -> clock signal.

e0   -> input signal #0.

e1   -> input signal #1.

s    -> unique output signal

clrb -> bar clear signal.

choose the best fit zoom.

cleaning:

rm *.o smlt_ami_dec work-obj93.cf  ad.vcd

2. Simulating the AMI encoder.

ghdl -a ../../rtl/vhdl/ami_enc.vhd

ghdl -a smlt_ami_enc.vhd

ghdl -e smlt_ami_enc

./smlt_ami_enc --vcd=ae.vcd

gtkwave ae.vcd

append the signals  clk, e, s0, s1, clrb

clk  -> clock signal.

e    -> unique input signal

s0   -> output signal #0.

s1   -> output signal #1.

clrb -> bar clear signal.

choose the best fit zoom.

cleaning:

rm *.o smlt_ami_enc work-obj93.cf  ae.vcd

3. Simulating the HDB1 decoder.

ghdl -a ../../rtl/vhdl/hdb1_dec.vhd

ghdl -a smlt_hdb1_dec.vhd

ghdl -e smlt_hdb1_dec

./smlt_hdb1_dec --vcd=h1d.vcd

gtkwave h1d.vcd

append the signals clk, e0, e1, s, clrb

clk  -> clock signal.

e0   -> input signal #0.

e1   -> input signal #1.

s    -> unique output signal

clrb -> bar clear signal.

choose the best fit zoom.

cleaning:

rm *.o smlt_hdb1_dec work-obj93.cf  h1d.vcd

4. Simulating the HDB1 encoder.

ghdl -a ../../rtl/vhdl/hdb1_enc.vhd

ghdl -a smlt_hdb1_enc.vhd

ghdl -e smlt_hdb1_enc

./smlt_hdb1_enc --vcd=h1e.vcd

gtkwave h1e.vcd

append the signals  clk, e, s0, s1, clrb

clk  -> clock signal.

e    -> unique input signal

s0   -> output signal #0.

s1   -> output signal #1.

clrb -> bar clear signal.

choose the best fit zoom.

cleaning:

rm *.o smlt_hdb1_enc work-obj93.cf  h1e.vcd