Subversion Repositories ethmac

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////  README.txt                                                  ////

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////  This file is part of the Ethernet IP core project           ////

////  http://www.opencores.org/projects/ethmac/                   ////

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////  Author(s):                                                  ////

////      - Igor Mohor (igorM@opencores.org)                      ////

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//// Copyright (C) 2001, 2002 Authors                             ////

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//// This source file may be used and distributed without         ////

//// restriction provided that this copyright statement is not    ////

//// removed from the file and that any derivative work contains  ////

//// the original copyright notice and the associated disclaimer. ////

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//// This source file is free software; you can redistribute it   ////

//// and/or modify it under the terms of the GNU Lesser General   ////

//// Public License as published by the Free Software Foundation; ////

//// either version 2.1 of the License, or (at your option) any   ////

//// later version.                                               ////

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//// This source is distributed in the hope that it will be       ////

//// useful, but WITHOUT ANY WARRANTY; without even the implied   ////

//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      ////

//// PURPOSE.  See the GNU Lesser General Public License for more ////

//// details.                                                     ////

////                                                              ////

//// You should have received a copy of the GNU Lesser General    ////

//// Public License along with this source; if not, download it   ////

//// from http://www.opencores.org/lgpl.shtml                     ////

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RUNNING the simulation/Testbench in ModelSIM:

Open ModelSIM project: ethernet/sim/rtl_sim/modelsim_sim/bin/ethernet.mpf

Run the macro do.do (write "do do.do" in the command window).

Simulation will be automatically started. Logs are stored in the /log

directory. tb_ethernet test is performed.

RUNNING the simulation/Testbench in Ncsim:

Go to the ethernet\sim\rtl_sim\ncsim_sim\run directory. Run the

run_eth_sim_regr.scr script. Simulation is automatically started. Logs are

stored in the /log directory. Before running the script for another time,

run the clean script that deletes files from previous runs. tb_ethernet test

is performed.

Why are eth_cop.v, eth_host.v, eth_memory, tb_cop.v and tb_ethernet_with_cop.v

files used for?

Although the testbench does not include the traffic coprocessor, the

coprocessor is part of the ethernet environment. eth_cop multiplexes

two wishbone interface between 4 modules:

- First wishbone master interface is connected to the HOST (eth_host)

- Second wishbone master interface is connected to the Ethernet Core (for

  accessing data in the memory (eth_memory)).

- First wishbone slave interface is connected to the Ethernet Core (for

  accessing registers and buffer descriptors).

- Second wishbone slave interface is connected to the memory (eth_memory)

  so host can write data to the memory (or read data from the memory.

tb_cop.c is a testbench just for the traffic coprocessor (eth_cop).

tb_ethernet_with_cop.v is a simple testbench where all above mentioned

modules are connected into a single environment. Few packets are transmitted

and received. The "main" testbench is tb_ethernet.v file. It performs several

tests (eth_cop is not part of the simulation environment).