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vhdl identifier unsigned is not directly visible.
Thank u so much, vji_vlsi.
I have tried to compile with different libraries. I found that the library ieee.std_logic_unsigned.all does nothing to do with the Identifier 'unsigned' is not visible problem.
The problem happens on...
identifier unsigned is not directly visible
Yes, it is VHDL, I use Modelsim as simulation tool, here are the library clauses.
library IEEE;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_arith.all;
use ieee.std_logic_unsigned.all;
Thanks in advance!
modelsim identifier is not directly visible.
I used type 'unsigned' for my entity, and every thing was fine for compilation, but when I tried to compile the testbench (the component is exactly same as the entity), it sais
Identifier 'unsigned' is not visible. Making two objects with the name...
Re: regarding MODELSIM
to create a new library from GUI:
1. select File>New>Library, and type the library name;
2. compile the source library file and save it;
3. select File>New>Library, and select a map to an existing library, type the library name of step 1, and browse to the library...
solvnet id and password
You need the side id (ask the synopsys tool administrator from your institute) and a proper email address to register for solvnet.
Re: Regarding ModelSim
It can be, if you import library to ModelSim from a project through GUI, then there will be another .ini file generated unter your working directory. Next time, when you creat a new project, ModelSim will ask you which .ini file you are going to use, the default one, or...
(vsim-3170)
Thank u, aji_vlsi
But umcl25u250t3v is the resource library for gate_level simulation, if this is not identified, there will be no default binding for my gate.
Of cause I can use library clause inside of the netlist to indicate this resource library, but for big designs, this...
power compiler vcd files
The search_path and link_library variable specifies where and in what order PrimePower
looks for design files and library files for linking the design.
The .db file is a library used for linking.
# ** error: (vsim-3170) could not find
Hi, yln, thank u so much for your reply. I have add the library (umcl25u250t3v) to modelsim.ini, and it seems that the library is succesfully imported to Modelsim (from the ModelSim GUI). But there is still a problem...
I created the following sum.do...
voltage storm fsdb
For example, you can use PrimePower to do gate-level power analysis using VCD as swichig activites. The sample scrip is like follwing:
set search_path "/home/SumTest /cad/umc/umc25_2002/core_v1.2"
set link_library "* umcl25u250t3_typ.db"
read_vhdl -vhdl_compiler...
power analysis gate level
Besides, PrimePower can do very accurate Gate-level power analysis.
PowerCompiler can do power analysis and power optimization for both RTL and Gate-level.
The swiching activites can be in VCD or saif format.
Re: internal power problem
The dynamic power of a circuit is composed of two kinds of power:
1. Switching power
2. Internal power
Internal power is any power dissipated within the boundary of a cell.
During switching, a circuit dissipates internal power by the charging
or discharging of any...
vsim-3170
I have a lot of resource libraries, which are used for gate-level simulation.
It is not possible to compile them one by one.
How can I set them into Modelsim simulation environment at the same time?
Thanks a lot!
I am doing power optimization with PowerCompiler Operand Isolation technique.
When I issue the command:
set_operand_isolation true
or :
set do_operand_isolation true
I got the error message sais: undefined operator near "set".
Why these commands are not recognized?
Thanks in advance!
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