æ¬æä»ç»å¦ä½ä½¿ç¨Debussyä¸ModelSimåCo-Simulationï¼å¹¶ä½¿ç¨VerilogãVHDL以åVerilogæé
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Introduction
使ç¨ç¯å¢ï¼Debussy 5.4 v9 + ModelSim SE 6.3e
æä¹åä¸ç´ä½¿ç¨Debussy + NC-Verilogåsimulationï¼Debussy (Verdi)å¯ä»¥è¯´æ¯HDLçSource Insightï¼æ¯traceä¸debugçç¥å
µå©å¨ï¼NC-Verilogä¹æ¯Verilog simulatorä¸é度æå¿«çï¼å¯æ¯æè¿å å·¥ä½éè¦ï¼æ¿å°çä¸å
codeå´æ¯ç¨VerilogåRTLï¼ç¨VHDLåtestbenchï¼æ以å¿
é¡»2ç§è¯è¨ä¸èµ·åsimulationï¼æå¨NC-Verilogä¸ç´æ æ³æå让两ç§è¯è¨ä¸èµ·simulationãModelSimè½ç¶æ¯æ´Verilog + VHDL co-simulationï¼ä½ç¨æ¯Debussyçæè¿æ¯æ æ³å¿æå
¶æ¹ä¾¿çtrace codeæ¹å¼ï¼æ以è¥è½è®©ModelSimä¹è½dumpåºDebussyæéè¦çfsdbæ¡£æ¡ï¼è¿æ ·å°±å¤ªå®ç¾äºã
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1.RTLä¸testbenchç使ç¨Verilog
2.RTLä¸testbenchç使ç¨VHDL
3.RTL使ç¨VHDLï¼testbench使ç¨Verilog
4.RTL使ç¨Verilogï¼testbench使ç¨VHDL
1.RTLä¸testbenchç使ç¨Verilog
Step 1ï¼
设å®ModeSim使ç¨Verilog PLI (å 为testbench使ç¨Verilog)
å°C:\Novas\Debussy\share\PLI\modelsim_pli\WINNT\novas.dllå¤å¶å°C:\Modeltech_6.3e\win32\ä¸
ä¿®æ¹C:\Modeltech_6.3e\modelsim.iniï¼å°Veriuseré¨åä¿®æ¹æå¦ä¸æ示ï¼
; List of dynamically loaded objects for Verilog PLI applications
; Veriuser = veriuser.sl
; use by verilog
Veriuser = novas.dll
; use by vhdl
; Veriuser = novas_fli.dll
modelsim.iniæ¯ä¸ªread onlyæ¡£ï¼è¦ä¿®æ¹åè®°å¾ä¿®æ¹å
¶å±æ§æè½åæ¡£ã
Step 2ï¼
RTLé¨å (以4 bit counter为ä¾)
counter.v / Verilog
1 /*
2 (C) OOMusou 2011
http://oomusou.cnblogs.com 3
4 Filename : counter.v
5 Simulator : ModelSim 6.3e, Debussy 5.4 v9
6 Description : ModelSim with debussy
7 Release : 01/31/2010 1.0
8 */
9
10 module counter (
11 clk,
12 rst_n,
13 cnt
14 );
15
16 input clk;
17 input rst_n;
18 output [3:0] cnt;
19
20 reg [3:0] cnt;
21
22 always@(posedge clk, negedge rst_n) begin
23 if (~rst_n)
24 cnt <= 4'h0;
25 else
26 cnt <= cnt + 1'b1;
27 end
28
29 endmodule
Step 3ï¼
Testbenché¨å
counter_tb.v / Verilog
1 /*
2 (C) OOMusou 2011
http://oomusou.cnblogs.com 3
4 Filename : counter_tb.v
5 Compiler : ModelSim 6.3e, Debussy 5.4 v9
6 Description : ModelSim with debussy
7 Release : 01/31/2010 1.0
8 */
9
10 module counter_tb;
11
12 reg clk;
13 reg rst_n;
14 wire [3:0] cnt;
15
16 // 50MHz
17 always #(10) clk = ~clk;
18
19 initial begin
20 #0;
21 clk = 1'b0;
22 rst_n = 1'b0;
23
24 #5;
25 rst_n = 1'b1;
26 #195;
27 $finish;
28 end
29
30 initial begin
31 $fsdbDumpfile("counter.fsdb");
32 $fsdbDumpvars(0, counter_tb);
33 end
34
35 counter u_counter (
36 .clk(clk),
37 .rst_n(rst_n),
38 .cnt(cnt)
39 );
40
41 endmodule
19è¡
initial begin
#0;
clk = 1'b0;
rst_n = 1'b0;
#5;
rst_n = 1'b1;
#195;
$finish;
end
ä¸æ¬æ¥è¯´ï¼è¥å¨NC-Verilogåsimulationï¼æ们ä¼å¨testbenchå
æå®ç»æsimulationçæ¶é´ï¼ä¸è¿å¨ModelSiméï¼simulationæ¶é´æ¯ç±ModelSim scriptæ§å¶ï¼å¨testbenchå
å$finish并没æç¨ï¼æ以ä¼çç¥$finishæ¶é´å
¥ä¸ã
initial begin
#0;
clk = 1'b0;
rst_n = 1'b0;
#5;
rst_n = 1'b1;
end
Step 4ï¼
ModelSim scripté¨å
vsim.do
vlib work
vlog counter.v
vlog counter_tb.v
vsim counter_tb
run 200ns
q
å
¶ä¸
vlib work
建ç«work libraryã
vlog counter.v
vlog counter_tb.v
ç¼è¯RTLï¼counter.v ä¸ testbenchï¼counter_tb.vï¼vlog为modelsimçVerilog compilerã
vsim counter_tb
以counter_tb为top moduleè¿è¡simulationã
run 200ns
å½ä»¤ModelSimæ§è¡200 nsçsimulationã
q
离å¼ModelSim
Step 5ï¼
æ§è¡ModelSimçæ¹æ¬¡æ¡£
mod.bat
vsim -c -do sim.do
-c 表示ModelSimå°ä»¥console modeæ§è¡ï¼å 为å¨Debussy + ModelSimæ¶ï¼åªæModelSimå½æNC-Verilog使ç¨ï¼å¹¶æ²¡æç¨å°ModelSimçGUI模å¼ã
-do 表示æ§è¡ModelSim scriptã
æ§è¡ç»æ
D:\0Clare\VerilogLab\ModelSim\counter_verilog>vsim -c -do sim.do
Reading C:/Modeltech_6.3e/tcl/vsim/pref.tcl
# 6.3e
# do sim.do
# ** Warning: (vlib-34) Library already exists at "work".
# Model Technology ModelSim SE vlog 6.3e Compiler 2008.02 Feb 2 2008
# -- Compiling module counter
#
# Top level modules:
# counter
# Model Technology ModelSim SE vlog 6.3e Compiler 2008.02 Feb 2 2008
# -- Compiling module counter_tb
#
# Top level modules:
# counter_tb
# vsim counter_tb
# ** Note: (vsim-3813) Design is being optimized due to module recompilation...
# ** Note: (vsim-3865) Due to PLI being present, full design access is being specified.
# Loading C:\Modeltech_6.3e\win32/novas.dll
# // ModelSim SE 6.3e Feb 2 2008
# //
# // Copyright 1991-2008 Mentor Graphics Corporation
# // All Rights Reserved.
# //
# // THIS WORK CONTAINS TRADE SECRET AND
# // PROPRIETARY INFORMATION WHICH IS THE PROPERTY
# // OF MENTOR GRAPHICS CORPORATION OR ITS LICENSORS
# // AND IS SUBJECT TO LICENSE TERMS.
# //
# Loading work.counter_tb(fast)
# Loading work.counter(fast)
# Novas FSDB Dumper for ModelSim, Release 5.4v9 (Win95/NT) 05/04/2005
# Copyright (C) 1996 - 2004 by Novas Software, Inc.
# *Novas* Create FSDB file 'counter.fsdb'
# *Novas* Start dumping the scope(counter_tb), layer(0).
# *Novas* End of dumping.
# ** Note: $finish : counter_tb.v(27)
# Time: 200 ns Iteration: 0 Instance: /counter_tb
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