How to replay VCD file in questasim ? getting syntax error in VCD file as $var port width must be 1(found '32')

SystemVerilog
,
1

Hi,

I am getting error when re-simulating design using questasim command vsim counter -vcdstim counter.vcd
i modified bitwidth field from vector to 1 bit
Example
$var reg 8 # count [7:0] $end
modified to
$var reg 1 # count [0] $end
$var reg 1 # count [1] $end
…
$var reg 1 # count [7] $end
now its working

why i am not getting results with vector definition $var reg 8 # count [7:0] $end ?

counter.vcd file is shown below

$date
Fri Jul 29 14:00:17 2016
$end
$version
QuestaSim Version 10.0b
$end
$timescale
1ns
$end
$scope module test_counter $end
$scope module dut $end
$var parameter 32 ! tpd_reset_to_count $end
$var parameter 32 " tpd_clk_to_count $end
$var reg 8 # count [7:0] $end
var wire 1 clk $end
$var wire 1 % reset $end
$upscope $end
$upscope $end
$enddefinitions $end
#0
dumpvars b11 ! b10 " bx # 0% 0
end #5 1% #8 b0 # #9 0% #10 1
#12
b1 #
#20
0$
#30
1$
#32
b10 #
#40
0$
#50
1$
#52
b11 #
#60
0$
#70
1$
#72
b100 #
#80
0$
#90
1$
#92
b101 #
#100
0$

2

In reply to pranu:

You need to contact your Mentor support team for support on tool-specific issues.

3

In reply to cgales:

Hi,
As VCD file format is ieee standard.All simulators has to support the format.
But,why i am getting error in questasim.
Do we neeed to add any switch while replay to support this format?

Can anyone suggest me what i can do to solve this issue

Thankyou

4

In reply to pranu:
The SystemVerilog IEEE standard only specifies how to dump/write to a VCD file. Using a VCD file as stimulus requires requires tool specific options to write it in a specific format as well as read it.

This public forum is not for tool specific support.

5

In reply to pranu:

Hi,

I am also getting “Error:Top-Level design unit “counter” does not have port y” where y is real type when VCD file has
->Parameter
->real
->integer
Eg;
$var parameter 32 % width $end
$var real 64 @ y $end

Can anyone help me to fix this issue

Thankyou

6

In reply to dave_59:

okay.i will contact to tool support team
Thankyou