ModelSim SE User's Manual - Electrical and Computer Engineering

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UM-226 8 - WLF files (datasets) and virtuals WLF files (datasets) ModelSim SE User’s Manual Wave Log Format (WLF) files are recordings of simulation runs. The WLF file is written as an archive file in binary format and is used to drive the List and Wave windows at a later time. The files contain data from logged objects (e.g., signals and variables) and the design hierarchy in which the logged objects are found. You can record the entire design or choose specific objects. The WLF file provides you with precise in-simulation and post-simulation debugging capability. Any number of WLF files can be reloaded for viewing or comparing to the active simulation. A dataset is a previously recorded simulation that has been loaded into ModelSim. Each dataset has a logical name to let you indicate the dataset to which any command applies. This logical name is displayed as a prefix. The current, active simulation is prefixed by "sim:", while any other datasets are prefixed by the name of the WLF file by default. Two datasets are displayed in the Wave window below. The current simulation is shown in the top pane and is indicated by the "sim" prefix. A dataset from a previous simulation is shown in the bottom pane and is indicated by the "gold" prefix. The simulator resolution (see "Simulator resolution limit" (UM-129) or (UM-78)) must be the same for all datasets you’re comparing, including the current simulation. If you have a WLF file that is in a different resolution, you can use the wlfman command (CR-416) to change it.
Saving a simulation to a WLF file Opening datasets WLF files (datasets) UM-227 If you add objects to the Dataflow, List, or Wave windows, or log objects with the log command, the results of each simulation run are automatically saved to a WLF file called vsim.wlf in the current directory. If you run a new simulation in the same directory, the vsim.wlf file is overwritten with the new results. If you want to save the WLF file and not have it be overwritten, select the dataset tab in the Workspace and then select File > Save. Or, you can use the -wlf argument to the vsim command (CR-373) or the dataset save command (CR-143). Important: If you do not use dataset save or dataset snapshot, you must end a simulation session with a quit or quit -sim command in order to produce a valid WLF file. If you don’t end the simulation in this manner, the WLF file will not close properly, and ModelSim may issue the error message "bad magic number" when you try to open an incomplete dataset in subsequent sessions. If you end up with a "damaged" WLF file, you can try to "repair" it using the wlfrecover command (CR-420). To open a dataset, do one of the following: Select File > Open and choose Log Files or use the dataset open command (CR-141). The Open Dataset dialog includes the following options. Dataset Pathname Identifies the path and filename of the WLF file you want to open. Logical Name for Dataset This is the name by which the dataset will be referred. By default this is the name of the WLF file. ModelSim SE User’s Manual
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ModelSim® Advanced Verification an
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Table of Contents 1 - Introduction
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Delta delays . . . . . . . . . . .
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ModelSim Verilog system tasks and f
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VHDL: instantiating SystemC . . . .
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Creating waveforms from patterns .
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14 - PSL Assertions (UM-359) What a
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17 - Signal Spy (UM-417) Introducti
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Starting the debugger . . . . . . .
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Steps in flow . . . . . . . . . . .
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1 - Introduction Chapter contents M
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ModelSim simulation task overview M
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Basic steps for simulation UM-25 Li
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ModelSim modes of operation ModelSi
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ModelSim graphic interface overview
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Sections in this document Sections
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Sections in this document UM-33 H -
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Where to find our documentation Whe
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2 - Projects Chapter contents Intro
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Project conversion between versions
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workspace Getting started with proj
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Step 3 — Compiling the files Gett
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The Project tab Sorting the list Th
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Grouping files Changing compile ord
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Optimization Configurations Creatin
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Organizing projects with folders UM
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Specifying file properties and proj
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Accessing projects from the command
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3 - Design libraries Chapter conten
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Archives Design library overview UM
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Managing library contents Working w
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Moving a library Working with desig
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Alternate IEEE libraries supplied R
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Referencing source files with locat
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Importing FPGA libraries Importing
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4 - VHDL simulation Chapter content
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Compiling VHDL files Creating a des
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Differences between language versio
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Compiling VHDL files UM-77 bit stri
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Default binding Simulating VHDL des
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Simulating VHDL designs UM-81 In th
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Creating an elaboration file Loadin
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Example Simulating with an elaborat
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Controlling checkpoint file compres
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Using STD_INPUT and STD_OUTPUT with
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Reading and writing hexadecimal num
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VITAL specification and source code
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Compiling and simulating with accel
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init_signal_driver() init_signal_sp
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to_time() Util package UM-99 to_tim
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Modeling memory ’87 and ’93 exa
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if (mwrite = '1') then ram(address)
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BEGIN return mem(to_integer(addr));
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BEGIN FOR i IN 0 TO 1023 LOOP we
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Converting an integer into a bit_ve
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5 - Verilog simulation Chapter cont
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Introduction ModelSim Verilog basic
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Incremental compilation Compiling V
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Library usage Compiling Verilog fil
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Verilog-XL compatible compiler argu
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Compiling Verilog files UM-121 The
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Verilog generate statements Compili
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Naming the optimized design Optimiz
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Optimizing Verilog designs UM-127 I
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Simulating Verilog designs Simulato
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`timescale, -t, and rounding Simula
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Simulating Verilog designs UM-133 T
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Simulating Verilog designs UM-135 M
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+pulse_e_style_onevent +pulse_int_e
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Creating an elaboration file Loadin
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Example Simulating with an elaborat
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Controlling checkpoint file compres
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Distributed delay mode In distribut
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System tasks and functions UM-147 a
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File I/O tasks $fclose $fopen $fwri
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System tasks and functions UM-151 T
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Compiler directives Compiler direct
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ModelSim compiler directives The fo
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Determining which memories were imp
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6 - SystemC simulation Chapter cont
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Supported platforms and compiler ve
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Usage flow for SystemC-only designs
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Code modification examples Compilin
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Example 3 Compiling SystemC files U
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Restrictions on compiling with HP a
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Issues with C++ templates Templatiz
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Simulating SystemC designs Loading
Page 175 and 176: Initialization and cleanup of Syste
Page 177 and 178: Waveform compare Debugging the desi
Page 179 and 180: Debugging the design UM-179 The gdb
Page 181 and 182: Viewing FIFOs SystemC object and ty
Page 183 and 184: OSCI 2.1 features supported Differe
Page 185 and 186: Troubleshooting SystemC errors UM-1
Page 187 and 188: 7 - Mixed-language simulation Chapt
Page 189 and 190: Usage flow for mixed-language simul
Page 191 and 192: Simulator resolution limit Runtime
Page 193 and 194: Mapping data types Verilog to VHDL
Page 195 and 196: VHDL to Verilog mappings Mapping da
Page 197 and 198: Channels Ports Verilog mapping sc_b
Page 199 and 200: Verilog sc_logic sc_bit bool SuX 'X
Page 201 and 202: SystemC VHDL sc_int, sc_uint bit_ve
Page 203 and 204: VHDL: instantiating Verilog Verilog
Page 205 and 206: The generic type is determined by t
Page 207 and 208: Verilog: instantiating VHDL VHDL in
Page 209 and 210: SystemC: instantiating Verilog Veri
Page 211 and 212: Example #2 SystemC: instantiating V
Page 213 and 214: }; } #endif // Connect ports chip->
Page 215 and 216: Example of parameter use format_cha
Page 217 and 218: SystemC: instantiating VHDL VHDL in
Page 219 and 220: Example SystemC: instantiating VHDL
Page 221 and 222: ); END ringbuf; ARCHITECTURE RTL OF
Page 223 and 224: vgencomp component declaration vgen
Page 225: 8 - WLF files (datasets) and virtua
Page 229 and 230: Managing multiple datasets WLF file
Page 231 and 232: Saving at intervals with Dataset Sn
Page 233 and 234: Virtual Objects (User-defined buses
Page 235 and 236: Virtual regions Virtual types Virtu
Page 237 and 238: 9 - Waveform analysis Chapter conte
Page 239 and 240: Introduction Objects you can view W
Page 241 and 242: Wave window overview UM-241 Here is
Page 243 and 244: List window overview List window ov
Page 245 and 246: Measuring time with cursors in the
Page 247 and 248: Jumping to a signal transition Meas
Page 249 and 250: Zooming the Wave window display Zoo
Page 251 and 252: Searching in the Wave and List wind
Page 253 and 254: Using the Expression Builder for ex
Page 255 and 256: Formatting the Wave window Setting
Page 257 and 258: Formatting the Wave window UM-257 3
Page 259 and 260: Formatting the List window Setting
Page 261 and 262: Saving the window format Saving the
Page 263 and 264: Saving List window data to a file S
Page 265 and 266: Configuring new line triggering in
Page 267 and 268: Configuring new line triggering in
Page 269 and 270: Miscellaneous tasks Examining wavef
Page 271 and 272: Comparison Wizard Waveform Compare
Page 273 and 274: Test Dataset Waveform Compare UM-27
Page 275 and 276: Adding regions Waveform Compare UM-
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Clocked comparison Waveform Compare
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Viewing differences in the Wave win
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Compare icons Waveform Compare UM-2
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Comparing hierarchical and flattene
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10 - Generating stimulus with Wavef
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Getting started You can use Wavefor
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Creating waveforms from patterns Cr
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Editing waveforms GR-291 These comm
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Simulating directly from waveform e
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Driving simulation with the saved s
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Saving the waveform editor commands
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11 - Tracing signals with the Dataf
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Adding objects to the window Adding
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Exploring the connectivity of your
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Zooming and panning Zooming with to
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Tracing the source of an unknown (X
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Finding objects by name in the Data
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Printing on Windows platforms Selec
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Symbol mapping Symbol mapping UM-31
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Configuring window options Configur
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12 - Profiling performance and memo
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Getting started Memory allocation p
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Enabling the statistical sampling p
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Interpreting profiler data Interpre
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The Call Tree view Viewing profiler
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Viewing profile details Viewing pro
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Integration with Source windows Int
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Reporting profiler results Reportin
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13 - Measuring code coverage Chapte
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Supported types ModelSim code cover
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Enabling code coverage Enabling cod
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Enabling code coverage UM-339 Next,
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Viewing coverage data in the Source
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Toggle coverage Enabling Toggle cov
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3 Produce the report with the toggl
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Excluding objects from coverage Exc
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end instance Default filter file Ex
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XML output Reporting coverage data
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Instance report with line details R
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Coverage statistics details Conditi
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Coverage statistics details UM-357
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14 - PSL Assertions Chapter content
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PSL assertion language What are ass
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Using cover directives Using assert
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REF2); signal mem_state : memory_st
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} // Check the write cycle property
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Multi-clocked properties and defaul
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Using endpoints in HDL code Example
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Restrictions Clocking endpoints Usi
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Compiling and simulating assertions
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Enabling/disabling failure and pass
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Setting failure and pass limits Man
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Reporting on assertions Reporting o
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15 - Functional coverage with PSL a
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Compiling and simulating functional
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Weighting coverage directives Confi
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Viewing coverage directives in the
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Reporting functional coverage stati
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Tag Meaning Understanding aggregate
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Saving functional coverage data Sav
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Clearing functional coverage data C
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16 - C Debug Chapter contents Intro
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Supported platforms and gdb version
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Setting breakpoints Setting breakpo
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Stepping in C Debug Stepping in C D
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Identifying all registered function
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Auto find bp versus Auto step mode
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Debugging functions during elaborat
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VPI functions in initialization mod
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C Debug command reference C Debug c
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17 - Signal Spy Chapter contents In
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init_signal_driver Call only once S
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Example library IEEE, modelsim_lib;
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Arguments Related procedures Limita
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signal_force Syntax Returns Argumen
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signal_release Syntax Returns Argum
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$init_signal_driver Call only once
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Example `timescale 1 ps / 1 ps modu
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Related tasks Limitations Example N
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Related tasks Limitations Example N
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Example module testbench; reg relea
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18 - Standard Delay Format (SDF) Ti
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SDF specification with the GUI Erro
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Resolving errors VHDL VITAL SDF UM-
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Examples Optional arguments can be
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REMOVAL is matched to $removal: SDF
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Optional conditions Timing check po
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Interconnect delays Interconnect de
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Mistaking a component or module nam
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19 - Value Change Dump (VCD) Files
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Checkpoint/restore and writing VCD
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Example 3 — Mixed-HDL design Firs
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ModelSim VCD commands and VCD tasks
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A VCD file from source to output VH
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x) x* x+ x, $end #300 $dumpon 1! 0"
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Capturing port driver data Supporte
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Example VCD output from vcd dumppor
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20 - Tcl and macros (DO files) Chap
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Tcl commands Tcl commands UM-473 Fo
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Tcl command syntax UM-475 7 If a wo
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set command syntax Tcl command synt
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Variable substitution System comman
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ModelSim Tcl time commands Conversi
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Tcl examples This is an example of
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} if {$windowName == ""} { # Dialog
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Macros (DO files) Creating DO files
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set vFilesExist 1 } shift } if {$vh
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Using the Tcl source command with D
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The Tcl Debugger Starting the debug
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Breakpoints The Tcl Debugger UM-495
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TclPro Debugger TclPro Debugger UM-
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A - ModelSim GUI changes Appendix c
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Main window changes UM-501 See "Cus
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Main window changes UM-503 File > O
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View menu The View menu has been re
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Tools menu The 6.0 Main window Tool
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List window changes File menu The L
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File menu See "Memory windows" (GR-
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View menu The Memory window > View
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Edit menu The Signals window > Edit
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View menu The Source window > File
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B - ModelSim variables Appendix con
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Environment variables Environment v
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Library mapping with environment va
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[Library] library path variables Va
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[vcom] VHDL compiler control variab
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[vsim] simulator control variables
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Preference variables located in INI
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Commonly used INI variables Prefere
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Force command defaults Preference v
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Variable precedence Variable preced
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Special considerations for the now
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C - Error and warning messages Appe
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ModelSim message system UM-547 Ther
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Exit codes The table below describe
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Miscellaneous messages Miscellaneou
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Miscellaneous messages UM-553 model
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VSIM license lost Message text Cons
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Suggested action Multiply defined s
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D - Verilog PLI / VPI / DPI Chapter
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Registering PLI applications Regist
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Registering VPI applications Exampl
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Registering DPI applications Regist
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For Windows only: Run a preliminary
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32-bit Linux platform Compiling and
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gcc compiler gcc -c -I//modeltech/i
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For DPI imports 64-bit IBM RS/6000
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32-bit Linux platform Compiling and
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64-bit Solaris platform Compiling a
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64-bit IBM RS/6000 platform DPI spe
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Loading shared objects with global
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VPI example The following example i
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The PLI callback reason argument Th
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The sizetf callback function The si
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Third party PLI applications Third
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IEEE Std 1364 ACC routines IEEE Std
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IEEE Std 1364 TF routines IEEE Std
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SystemVerilog DPI access routines S
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Verilog-XL compatible routines Veri
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PLI/VPI tracing The purpose of trac
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Debugging PLI/VPI/DPI application c
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E - ModelSim shortcuts Appendix con
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Main and Source window mouse and ke
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Keystrokes - UNIX Keystrokes - Wind
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Wave window mouse and keyboard shor
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F - System initialization Appendix
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Environment variables accessed duri
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Initialization sequence Initializat
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G - Logic Modeling SmartModels Appe
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Creating foreign architectures with
Page 621 and 622:
Vector ports Entity details VHDL Sm
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SmartModel Windows VHDL SmartModel
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Verilog SmartModel interface Verilo
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H - Logic Modeling hardware models
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Creating foreign architectures with
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Vector ports Architecture details V
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End-User License Agreement IMPORTAN
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COMPLIED WITH THIS AGREEMENT. MENTO
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Graphics shall only use or disclose
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Index CR = Command Reference, UM =
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Stop on quit mode UM-414 C Debug se
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mem search CR-204 modelsim CR-206 n
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ange checking in VHDL CR-316, UM-74
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Add Folder GR-47 C Debug setup GR-9
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F -f CR-360 F8 function key UM-607
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Verilog modules UM-125 VHDL subprog
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Memory window GR-169 GUI changes UM
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optimizing Verilog designs design o
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eaders and drivers UM-303 readers c
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adix specifying for examine CR-163
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system tasks VCD UM-461 Verilog UM-
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U -u CR-365 unbound component GR-53
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library clause UM-64 mixed designs
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text editing UM-605 windows Active
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